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Technical Information

Precision Alloy Surcharge

  Precision Alloy Surcharge Information

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Specification & Composition

Stainless Steel 300 Series (Austenitic)

European Designation
EN 10088-2   2005		 Former BS
Standard		 American European Designations chemical composition (% weight)
Number .Name BS 1449-2
1983
nearest fit		 AISI
nearest
fit		 ASTM
UNS
nearest fit		 C Si Mn P S N Cr Ni Mo Others
1.4310 X10 Cr Ni 18-8 301S21
302S25		 301
302		 S 30100 0.05-0.15 *2.00 2.00 0.045 0.015 0.11 16.00 - 19.00 6.00 - 9.50 0.80 *Available with
Si @ 1% max
1.4307 X2 Cr Ni 18-9 304S11 304L S 30403 0.03 1.00 2.00 0.045 0.015 0.11 17.50 - 19.50 8.00 - 10.00    
1.4306 X2 Cr Ni 19-11 304S11 304L S 30403 0.03 1.00 2.00 0.045 0.015 0.11 18.00 - 20.00 10.00 - 12.00    
1.4301 X5 Cr Ni 18-10 304S15
304S16
304S31		 302
304		 S 30400 0.07 1.00 2.00 0.045 0.015 0.11 17.00 - 19.50 8.00 - 10.50    
1.4303 X4 Cr Ni 18-12 305S19 305 S 30500 0.06 1.00 2.00 0.045 0.015 0.11 17.00 - 19.00 11.00 - 13.00    
1.4404 X2 Cr Ni Mo 17-12-2 316S11 316L S 31603 0.03 1.00 2.00 0.045 0.015 0.11 16.50 - 18.50 10.00 - 13.00 2.00 - 2.50  
1.4432 X2 Cr Ni Mo 17-12-3 316S13 316L S 31603 0.03 1.00 2.00 0.045 0.015 0.11 16.50 - 18.50 10.50 - 13.00 2.50 - 3.00  
1.4435 X2 Cr Ni Mo 18-14-3 316S13 316L S 31603 0.03 1.00 2.00 0.045 0.015 0.11 17.00 - 19.00 12.50 - 15.00 2.50 - 3.00  
1.4401 X5 Cr Ni Mo 17-12-2 316S31 316 S 31600 0.07 1.00 2.00 0.045 0.015 0.11 16.50 - 18.50 10.00 - 13.00 2.00 - 2.50  
1.4436 X3 Cr Ni Mo 17-13-3 316S33 316 S 31600 0.05 1.00 2.00 0.045 0.015 0.11 16.50 - 18.50 10.50 - 13.00 2.50 - 3.00  
1.4571 X6 Cr Ni Mo Ti  17-12-2 320S31 320 S 31635 0.08 1.00 2.00 0.045 0.015 - 16.50 - 18.50 10.50 - 13.50 2.00 - 2.50 Ti = 5 x C to 0.70
1.4541 X6 Cr Ni Ti  18-10 321S31 321 S 32100 0.08 1.00 2.00 0.045 0.015 - 17.00 - 19.00 9.00 - 12.00 - Ti = 5 x C to 0.70
1.4550 X6 Cr Ni Nb 18-10 347S31 347 S 34700 0.08 1.00 2.00 0.045 0.015   17.00 - 19.00 9.00 - 12.00 - Nb = 10 x C to 1.00

Stainless Steel 400 Series (Ferritic)

European Designation
EN 10088-2 2005		 Former BS
Standard		 American European Designations chemical composition (% weight)
Number .Name BS 1449-2
1983
nearest fit		 AISI
nearest
fit		 ASTM
UNS
nearest fit		 C Si Mn P S N Cr Ni Ti Mo Others
1.4016 X6 Cr 17 430S17 430 S 43000 0.05-0.15 1.00 1.00 0.040 0.015 - 16.00 - 18.00 - -    
1.4113 X6 Cr Mo 17-1 434S17 434 S 43400 0.08 1.00 1.00 0.040 0.015 - 16.00 - 18.00 - - 0.90 - 1.40  
1.4605 X2 Cr Al Ti 18-2 - type
18-SR		 - 0.03 1.00 1.00 0.040 0.015 - 17.00 - 18.00 - 4x(C+N)+0.15
= 0.80 max		 - Al
1.70 2.10

Stainless Steel 400 Series (Martensitic)

European Designation
EN 10088-2 2005		 Former BS
Standard		 American European Designations chemical composition (% weight)
Number .Name BS 1449-2
1983
nearest fit		 AISI
nearest
fit		 ASTM
UNS
nearest fit		 C Si Mn P S Cr Ni Ti Mo Others
1.4006 X12 Cr 13 410S21 410 S 41000 0.08-0.15 1.00 1.50 0.040 0.015 11.50 - 13.50 0.75 -    
1.4028 X30 Cr 13 420S45 420 S 42000 0.26 - 0.35 1.00 1.50 0.040 0.015 12.00 - 14.00 - - -  
1.4122 X39 Cr Mo 17-1 - - - 0.33 1.00 1.50 0.040 0.015 15.50 - 17.50 1.0 - 0.80 - 1.30 -

Stainless Steel 17-7 PH (Precipitation Hardening)

European Designation
EN 10088-2 2005		 Former BS
Standard		 American European Designations chemical composition (% weight)
Number .Name BS 1449-2
1983
nearest fit		 AISI
nearest
fit		 ASTM
UNS
nearest fit		 C Si Mn P S Cr Ni Mo Al
1.4568 X7 Cr Ni Al 17-7 - 631 S 17700 0.09 0.70 1.00 0.040 0.015 16.00 - 18.00 6.50 - 7.80 - 0.70 - 1.50
1.4532 X8 Cr Ni Mo Al 15-7-2 - 632 S 15700 1.00 0.70 1.20 0.040 0.015 14.00 - 16.00 6.5 - 7.80 2.00 - 3.00 0.70 - 1.50

Stainless Steel Duplex

European Designation
EN 10088-2 2005		 Former BS
Standard		 American European Designations chemical composition (% weight)
Number .Name BS 1449-2
1983
nearest fit		 ASTM
UNS
nearest fit		 C Si Mn P S N Cr Cu Mo Ni Others
1.4362* X2 Cr Ni N 23-4* - S 39230
(replaces S 32304)		 0.03 1.00 2.00 0.035 0.015 0.05 - 0.20 22.00 - 24.00 0.10 - 0.60 0.10 - 0.60 3.50 - 6.50 -
1.4462 X2 Cr Ni Mo N 22-5-3 - S 39209
(replaces S 31803)		 0.03 1.00 2.00 0.035 0.015 0.10 - 0.22 21.00 - 23.00 - 2.50 - 3.50 4.50 - 6.50 -
Special grade
1.4410* X2 Cr Ni Mo N 25-7-4* - S 39275
(replaces S 32750)		 0.03 1.00 2.00 0.035 0.015 0.20 - 0.35 24.00 - 26.00 - 3.00 - 4.50 6.00 - 8.00 -

High Performance Alloys

NICKEL ALLOYS limiting CHEMICAL COMPOSITION based on the UNS designation, strip products

UNS   Generic or
manufacturers Name
Alloy (xxxx) 		Material
number
EN / DIN 		BS
Grade 		ASTM  AMS  Al C Co Cr Cu Fe Mn Mo Ni P Si  S  Ti Others
N02200 alloy 200 2.4066 NA11 B 162     0.15     0.25 0.40 0.35   a(99.0)   0.35 0.010    
N02201 alloy 201 2.4068 NA12 B 162 5553   0.02     0.25 0.40 0.35   a (99.0)   0.35 0.010    
N04400 alloy 400 2.4360 NA13 B 127 4544   0.30     rem 2.50 2.00   63-70   0.50 0.024    
N05500 alloy K500 2.4375 NA18   4676 2.30-3.15 0.25     rem 2.00 1.50   63-70   0.50 0.010 0.35-0.85  
N06002 alloy X 2.4665   B 435 5536   0.05-0.15 0.5-2.5 20.5-23   17-20 1.00 8-10 rem 0.040 1.00 0.030   W 0.20-1.0
N06022 alloy C22 2.4602   B 575     0.015 2.50 20-22.5   2.0-6.0 0.50 12.5-14.5 rem 0.020 0.080 0.020   V 0.35 ; W 2.5-3.5
N06075 Nimonicd 75 2.4951         0.08-0.15   18-21 0.50 5.0 1.00   rem   1.00   0.20-0.60  
N06200 alloy C2000 2.4675   B 575   0.50 0.010 2.0 22-24 1.3-1.9 3.0 0.50 15-17 rem 0.025 0.080 0.010    
N06600 alloy 600 2.4816 NA14 B 168 5540   0.15   14-17 0.50 6-10 1.00   a (72.0)   0.50 0.015    
N06601 alloy 601 2.4851 - B 168 5870 1.0-1.7 0.10   21-25 1.0 rem 1.00   58-63   0.50 0.015    
N06625 alloy 625 2.4856 NA21 B 443 5599 0.40 0.10   20-23   5.0 0.50 8-10 rem 0.015 0.50 0.015 0.40 Cb 3.15-4.15
N07214 HAYNES  214 e 2.4646       4.0-5.0 0.050 2.0 15-17   2.0-4.0 0.50 0.50 rem 0.015 0.20 0.015 0.50 B 0.006; W 0.50
Y 0.002-0.040; Zr 0.05
N07718 alloy 718 2.4668   B 670 5596 0.20-0.80 0.080 1.00 17-21 0.30 rem 0.35 2.8-3.0 50-55 0.015 0.35 0.015 0.65-1.15 Cb 4.75-5.50 ; B 0.006
N07750 alloy X750 2.4669 - B 637 5598 0.40-1.0 0.080 0.7-1.2 14-17 0.50 5-9 1.00   a (70.0)   0.50 0.010 2.25-2.75 Cb 0.70-1.20
N08800 alloy 800 1.4876 NA15 B 409 5871 0.15-0.60 0.10   19-23 0.75 rem 1.50   30-35   1.0 0.015 0.16-0.60  

The chemical compositions shown are for identification purposes only and should not be used in place of individual manufacturer’s specifications.

Notes : (a) minimum value (b) nominal value (c) trade mark of Carpenter Technologies (d) trade mark of Special Metals (e) trade mark of Haynes International, Inc (f) trade mark of Elgiloy Speciality Metals

NICKEL ALLOYS limiting CHEMICAL COMPOSITION based on the UNS designation, strip products

UNS   Generic or
manufacturers Name
Alloy (xxxx) 		Material
number
EN / DIN 		BS
Grade 		ASTM  AMS  Al C Co Cr Cu Fe Mn Mo Ni P Si  S  Ti Others
N08810 alloy 800H 1.4958       “ 0.05-0.10   “ “ “ “   “   “ “ “  
N08811 alloy 800HT 1.4959       “ 0.06-0.10   “ “ 39.5 min “   “   “ “ “ Ti + Al = 0.85-1.20
N08825 alloy 825 2.4858 NA16 B 424   0.20 0.050   19.5-23.5 1.5-3.0 rem 1.00 2.5-3.5 38-46 0.030 0.50 0.030 0.6-1.20  
N10276 alloy C276 2.4819   B 575     0.020 2.50 14.5-16.5   4-7 1.00 15-17 rem 0.030 0.080 0.030   V 0.035 ; W 3.0-4.5
N10675 alloy B3 2.4600   B 333   0.50 0.010 3.0 1.0-3.0 0.20 1.0-3.0 3.00 27-32 a (65.0) 0.030 0.10 0.010 0.20 Cb 0.20 ; Ta 0.20 ; V 0.20   W 3.0; Zr 0.10; Ni+Mo 94-98
R30003 Elgiloy f       5833   0.15 39-41 19-21   rem 1.5-2.5 6.0-8.0 15-16         Be 1.0
R30605 HAYNES e 25       5537   0.05-0.15 rem 19-21   3.0 1.0-2.0   9.0-11   0.40 0.030   W 14-16
K93600 Nilo d alloy 36 1.3912   B 388     0.10 1.0 0.50   rem 0.60 0.50 35-38 0.025 0.35 0.025    
K94100 Nilo d alloy 42 1.3917   F 30 (42)   0.10 0.050   0.25   rem 0.80   (41)b 0.025 0.30 0.025    
K94610 Kovar c alloy 29/18 1.3981   F 15   0.10 0.040 (17)b 0.20 0.20 (53)b 0.50 0.20 (29)b   0.20   0.10 Mg 0.10; Zr 0.10
Al+Mg+Zr+Ti = 0.20

The chemical compositions shown are for identification purposes only and should not be used in place of individual manufacturer's specifications.

Notes : (a) minimum value (b) nominal value (c) trade mark of Carpenter Technologies (d) trade mark of Special Metals (e) trade mark of Haynes International, Inc (f) trade mark of Elgiloy Speciality Metals

Mild & Carbon Steels - Carbon Steel

Steel Designation
BS EN 10132-4		 CHEMICAL COMPOSITION weight % (cast analysis) Hardness for Delivery Condition (reference values)
Name Number C Si Mn P max S max Cr Mo max V max Ni Annealed (+A) or annealed and skin passed (+LC) Rockwell ‘B’ scale Quenched and Tempered (+QT) Rockwell ‘C’ scale
C55S 1.1204 0.52-0.60 0.15-0.35 0.60-0.90 0.025 0.025 0.40 max 0.10 - 0.40 max 90 max 34 - 50.5
C60S 1.1211 0.57-0.65 0.15-0.35 0.60-0.90 0.025 0.025 0.40 max 0.10 - 0.40 max 91 max 35 - 51.5
C67S 1.1231 0.65-0.73 0.15-0.35 0.60-0.90 0.025 0.025 0.40 max 0.10 - 0.40 max 92 max 38.5 - 54
C75S 1.1248 0.70-0.80 0.15-0.35 0.60-0.90 0.025 0.025 0.40 max 0.10 - 0.40 max 93 max 38.5 - 54
C85S 1.1269 0.80-0.90 0.15-0.35 0.40-0.70 0.025 0.025 0.40 max 0.10 - 0.40 max 94 max 38.5 - 55
C90S 1.1217 0.85-0.95 0.15-0.35 0.40-0.70 0.025 0.025 0.40 max 0.10 - 0.40 max 94 max 38.5 - 55
C100S 1.1274 0.95-1.05 0.15-0.35 0.30-0.60 0.025 0.025 0.40 max 0.10 - 0.40 max 95 max 38.5 - 57
C125S 1.1224 1.20-1.30 0.15-0.35 0.30-0.60 0.025 0.025 0.40 max 0.10 - 0.40 max 97 max 38.5 - 57
48Si7 1.5021 0.45-0.52 1.60-2.00 0.50-0.80 0.025 0.025 0.40 max 0.10 - 0.40 max 95 max 38.5 - 50.5
56Si7 1.5026 0.52-0.60 1.60-2.00 0.60-0.90 0.025 0.025 0.40 max 0.10 - 0.40 max 96 max 38.5 - 50.5
51CrV4 1.8159 0.47-0.55 0.40 max 0.70-1.10 0.025 0.025 0.90-1.20 0.10 0.10-0.25 0.40 max 94 max 38.5 - 52.5
80CrV2 1.2235 0.75-0.85 0.15-0.35 0.30-0.50 0.025 0.025 0.40-0.60 0.10 0.15-0.25 0.40 max 95 max 38.5 - 52.5
75Ni8 1.5634 0.72-0.78 0.15-0.35 0.30-0.50 0.025 0.025 < 0.15 0.10 - 1.80-2.10 93 max 38.5 - 52.5
125Cr2 1.2002 1.20-1.30 0.15-0.35 0.25-0.40 0.025 0.025 0.40-0.60 0.10 - 0.40 max 97 max 42 - 57
102Cr6 1.2067 0.95-1.10 0.15-0.35 0.20-0.40 0.025 0.025 1.35-1.60 0.10 - 0.40 max 97 max 42 - 57

Mild & Carbon Steels - Mild Steel Specification

Designation
BS EN 10139 		Corresponding
former
British Grades 		Chemical Composition (cast analysis) weight % maximum Mechanical Properties
Material number Name BS 1449-1 1983 C P S Mn Ti Period Guaranteed Delivery Condition Symbol Re N/mm2 Rm N/mm2 Elongation % min A80 Hardness HV
1.0330 DC01 CS4 0.12 0.045 0.045 0.60   3 months Annealed A - 270-390 28 105 max
Skin passed LC 280 max 270-410 28 115 max
Work hardened C290 200-380 290-430 18 95-125
C340 250 min 340-490 - 105-155
C390 310 min 390-540 - 117-172
C440 360 min 440-590 - 135-185
C490 420 min 490-640 - 155-200
C590 520 min 590-740 - 185-225
C690 630 min 690 min - 215 min
1.0347 DC03 CS3, CS2 0.10 0.035 0.035 0.45   6 months Annealed A - 270-370 34 100 max
Skin passed LC 240 max 270-370 34 110 max
Work hardened C290 210-355 290-390 22 95-117
C340 240 min 340-440 - 105-130
C390 330 min 390-490 - 117-155
C440 380 min 440-540 - 135-172
C490 440 min 490-590 - 155-185
C590 540 min 590 min - 185 min

Copper & Alloys - Pure Copper

Material Designation
EN 1652 		Near Fit Cu * Bi O P Pb Other Elements
Symbol Number UNS BS 2870 Total Excluding
Cu-ETP CW004A C10100 C101 99.90 min 0.0005 max 0.040 ** max - 0.005 max 0.03 max Ag, O
Cu-FRTP CW006A - C102 99.90 min - 0.100 max - - 0.05 max Ag, Ni, O
Cu-OF CW008A C10300 C103 99.95 min 0.0005 max  *** - 0.005 max 0.03 max Ag
Cu-DLP CW023A - - 99.90 min 0.0005 max - 0.005 - 0.013 0.005 max 0.03 max Ag, Ni, P
Cu-DHP CW024A - C106 99.90 min - - 0.015 - 0.040 - - -

* Including Ag up to a max of 0.015 %
** Oxygen content up to 0.060 % is permitted, subject to agreement between the purchaser and supplier
*** The Oxygen content shall be such that the material conforms to the hydrogen embrittlement requirements of prEN 1976

NOTE : The total of other elements (than copper) is defined as the sum of : Ag, As, Bi, Cd, Co, Cr, Fe, Mn, Ni, O, P, Pb, S, Sb, Se, Sn, Te, and Zn,
subject to the exclusion of any individual elements indicated.

Copper & Alloys - Copper Alloy

Material Designation EN 1652 or (Alloy..) Nearest Fit Cu Be Co Fe
max		 Mn
max		 Ni P Pb
max		 Sn Zn OTHERS Impurities max
Symbol Number UNS BS 2870
CuZn30 CW505L C26000 CZ106 69 - 71     0.05   0.30 max   0.005 0.10 max Rem' Al 0.02 max 0.10
CuZn33 CW506L C26800 CZ107 66 - 68     0.05   0.30 max   0.005 0.10 max Rem' Al 0.02 max 0.10
CuZn37 CW508L C27200 CZ108 62 - 64     0.10   0.30 max   0.10 0.10 max Rem' Al 0.05 max 0.10
CuSn5 CW451K C51000 PB102 Rem'     0.10   0.20 max 0.01 - 0.40 0.02 4.6 - 5.5 0.2 max   0.20
CuSn6 CW452K C51900 PB103 Rem'     0.10   0.20 max 0.01 - 0.40 0.02 5.5 - 7.0 0.2 max   0.20
CuNi10Zn27 CW401J C74500 NS103 61 - 64     0.30 0.50 9 - 11   0.005   Rem'   0.20
CuNi12Zn24 CW403J C75700 NS104 63 - 66     0.30 0.50 11 - 13   0.03 0.03 max Rem'   0.20
CuNi18Zn20 CW409J C75200 NS106 60 - 63     0.30 0.50 17 - 19   0.03 0.03 max Rem'   0.20
CuNi18Zn27 CW410J C77000 NS107 53 - 56     0.30 0.50 17 - 19   0.03 0.03 max Rem'   0.20
CuNi9Sn2 (Alloy 725) CW351H C72500 - Rem'     0.30 0.30 8.5 - 10.5   0.03 1.8 - 2.8 0.10 max   0.10
(Alloy 194) C19400 - Rem'     2.10 - 2.60     0.015 - 0.15 0.03 0.03 max 0.05 - 0.20   0.15

Copper & Alloys - Beryllium Copper

Material Designation
EN 1652, 1654 or (Alloy)		 Nearest Fit Cu Be Co Fe
max		 Mn
max		 Ni P Pb
max		 Sn Zn OTHERS Impurities max
Symbol Number UNS BS 2870
( Alloy 174 ) C17410 - Rem' 0.15 - 0.5 0.35 - 0.6                 0.50
CuBe1.7 CW100C C17000 CB101 Rem' 1.6 - 1.8 0.30 max 0.20 max   0.30 max           0.50
CuBe2 CW101C C17200 - Rem' 1.8 - 2.1 0.30 max 0.20 max   0.30 max           0.50
( 1.8% Be/Cu ) C17200 CB101 Rem' 1.7 - 1.9 *     *         * (Ni + Co) 0.05 - 0.40 0.50
( Alloy 25 ) C17200 - Rem' 1.8 - 2.0 * *   *   0.02     * (Ni + Co) 0.2 min     
*(Co + Ni + Fe) 0.6 max		 0.50
( Alloy 165 ) C17000 - Rem' 1.6 - 1.79 * *   *         * (Ni + Co) 0.2 min     
*(Co + Ni + Fe) 0.6 max		 0.50

Mechanical Properties

300 Series (Austenitic)

European Designation
EN 10088-2 2005 		Former BS Standard American Iron and
Steel Institute grade
nearest fit		 Mechanical properties at room temperature in the temper rolled,
solution annealed condition.
Number .Name BS 1449-2
1983
nearest fit		 AISI
nearest
fit		 ASTM
UNS
nearest fit		 Proof strength Rp with
gauge length
80mm(tr.) N/mm2
minimum 0.2 % 		Tensile strength
Rm N/mm2		 Elongation
A80(tr.) % Minimum
80mm gauge
lengththickness < 3.0mm		 Hardness
VPN
Maximum
1.4310 X10 Cr Ni 18-8 301S21
302S25		 301
302		 S 30100 250 600 - 950 40 220
1.4307 X2 Cr Ni 18-9 304S11 304L S 30403 220 520 - 670 45 185
1.4306 X2 Cr Ni 19-11 304S11 304L S 30403 220 520 - 670 45 185
1.4301 X5 Cr Ni 18-10 304S15
304S16
304S31		 302
304		 S 30400 230 540 - 750 45 190
1.4303 X4 Cr Ni 18-12 305S19 305 S 30500 220 500 - 650 45 185
1.4404 X2 Cr Ni Mo 17-12-2 316S11 316L S 31603 240 530 - 680 40 195
1.4432 X2 Cr Ni Mo 17-12-3 316S13 316L S 31603 240 550 - 700 40 195
1.4435 X2 Cr Ni Mo 18-14-3 316S13 316L S 31603 240 550 - 700 40 195
1.4401 X5 Cr Ni Mo 17-12-2 316S31 316 S 31600 240 530 - 680 40 205
1.4436 X3 Cr Ni Mo 17-13-3 316S33 316 S 31600 240 550 - 700 40 205
1.4571 X6 Cr Ni Mo Ti 17-12-2 320S31 320 S 31635 240 540 - 690 40 205
1.4541 X6 Cr Ni Ti 18-10 321S31 321 S 32100 220 520 - 720 40 200
1.4550 X6 Cr Ni Nb 18-10 347S31 347 S 34700 220 520 - 720 40 200

400 Series (Ferritic)

European Designation
EN 10088-2 2005		 American Iron and
Steel Institute grade
nearest fit		 Mechanical properties at room temperature in the temper rolled,
solution annealed condition.
Number .Name AISI 0.2% Proof strength Rp with gauge length
80mmN/mm2 minimum
longitudinal transverse		 Tensile strength
Rm N/mm2		 Elongation
A80(tr.) % Minimum
80mm gauge length
thickness < 3.0mm		 Hardness
VPN
Maximum
1.4016 X6 Cr 17 430 280 320 450 - 600 20 175
1.4113 X6 Cr Mo 17-1 434 260 280 450 - 630 18 185
1.4605 X2 Cr Al Ti 18-2 type
18 - SR		 280 300 500 - 650 25 185

400 Series (Martensitic)

European Designation
EN 10088-2 2005		 American Iron and
Steel Institute grade
nearest fit		 Mechanical properties at room temperature in the temper rolled,
solution annealed condition.
Number .Name AISI 0.2% Proof strength Rp
with gauge length
80mmN/mm2 minimum
transverse		 Tensile strength
Rm N/mm2		 Elongation
A80(tr.) % Minimum
80mm gauge length
thickness < 3.0mm		 Hardness
VPN
Maximum
1.4006 X12 Cr 13 410 - 600 max 20 200
1.4028 X30 Cr 13 420 - 740 max 15 235
1.4122 X39 Cr Mo 17-1 - - 900 max 12 280

17-7 PH (Precipitation Hardening)

European Designation
EN 10088-2 2005		 American Iron and
Steel Institute grade
nearest fit		 Mechanical properties at room temperature
in the temper rolled, heat treated condition
*AT = solution annealed *P = precipitation hardened
Number .Name AISI Heat treatment condition
*(AT or P)		 0.2% Proof strength Rp
with gauge length
80mmN/mm2
minimum transverse		 Tensile strength Rm N/mm2 Elongation A80
(long+tr) % Minimum
80mm gauge length
thickness < 3.0mm
1.4568 X7 Cr Ni Al 17-7 631 AT
P		 -
1310 min		 1030 max
1450 min		 19
2
1.4532 X8 Cr Ni Mo Al 15-7-2 632 AT
P		 -
1380 min		 1100 max
1550 min		 20
2

Duplex

European Designation
EN 10088-2 2005		 ASTM Mechanical properties at room temperature in the temper rolled,
solution annealed condition.
Number .Name UNS (nearest fit) 0.2% Proof strength Rp
with gauge length
80mmN/mm2 minimum
transverse		 Tensile strength
Rm N/mm2		 Elongation
A80(tr.) % Minimum
80mm gauge length
thickness < 3.0mm		 Hardness
VPN
Maximum
1.4362* X2 Cr Ni N 23-4* S 39230 420 600 - 850 20 275
1.4462 X2 Cr Ni Mo N 22-5-3 S 39209 480 660 - 950 20 300
Special grade
1.4410* X2 Cr Ni Mo N 25-7-4* S 39275 550 750 - 1000 15 315
* Patented steel grade

Copper & Alloys - Pure Copper

Material Designation   EN 1652 or (Alloy..) Near Fit Material Condition U.T.S.
Rm
N/mm2		 0.2% Proof Stress
Rp
N/mm2		 Elongation
A50
% min		 Hardness  
VPN
Symbol Number UNS BS 2870
Cu-ETP
Cu-FRTP
Cu-OF
Cu-DLP
Cu-DHP		 CW004A
CW006A
CW008A
CW0023A
CW0024A		 C10100
-
C10300
-
-		 C101
C102
C103
-
C106		 R200
H040		 200 - 250 100 max 42 min -
- - - 40 - 65
R220
H040		 220 - 260 140 max 33 -
- - - 40 - 65
R240
H065		 240 - 300 180 min 8 -
- - - 65 - 95
R290
H090		 290 - 360 250 min 4 -
- - - 90 - 110
R360
H110		 360 min 320 min 2 -
- - - 110 min

Copper & Alloys - Copper Alloy

Material Designation
EN 1652 or (Alloy..)		 Nearest Fit Material
Condition		 U.T.S.
Rm
N/mm2		 0.2% Proof Stress
N/mm2		 Elongation A50
% min		 Hardness
VPN
Symbol Number UNS BS 2870
Brasses
CuZn30 CW505L C26000 CZ106 R270
H055		 270 - 350 160 max 40 -
- - - 55 - 90
R350
H095		 350 - 430 170 min 21 -
- - - 95 - 125
R410
H120		 410 - 490 260 min 9 -
- - - 120 - 155
R480
H150		 480 min 430 min - -
- - - 150 min
CuZn33 CW506L C26800 CZ107 R280
H055		 280 - 380 170 max 50 -
- - - 55 - 90
R350
H095		 350 - 430 170 min 23 -
- - - 95 - 125
R420
H125		 420 - 500 300 min 6 -
- - - 125 - 155
R500
H155		 500 min 450 min - -
- - - 155 min
CuZn37 CW508L C27200 CZ108 R300
H055		 300 - 370 180 max 38 -
- - - 55 - 95
R350
H095		 350 - 400 170 min 19 -
- - - 95 - 125
R410
H120		 410 - 490 300 min 8 -
- - - 120 - 155
R480
H150		 480 - 560 430 min 3 -
- - - 150 - 180
R550
H170		 550 min 500 min - -
- - - 170 min
Phosphor Bronzes
CuSn5 CW451K C51000 PB102 R310
H075		 310 - 390 250 max 45 -
- - - 75 - 105
R400
H120		 400 - 500 240 min 14 -
- - - 120 - 160
R490
H160		 490 - 580 430 min 8 -
- - - 160 - 190
R550
H180		 550 - 640 510 min 4 -
- - - 180 - 210
R630
H200		 630 - 720 600 min 2 -
- - - 200 - 230
R690
H220		 690 min 670 min - -
- - - 220 min
CuSn6 CW452K C51900 PB103 R350
H080		 350 - 420 300 max 45 -
- - - 80 - 110
R420
H125		 420 - 520 260 min 17 -
- - - 125 - 165
R500
H160		 500 - 590 450 min 8 -
- - - 160 - 190
R560
H180		 560 - 650 500 min 5 -
- - - 180 - 210
R640
H200		 640 - 730 600 min 3 -
- - - 200 - 230
R720
H220		 720 min 690 min - -
- - - 220 min
Material Designation
EN 1652 or (Alloy..)		 Nearest Fit Material
Condition		 U.T.S.
Rm
N/mm2		 0.2% Proof Stress
N/mm2		 Elongation A50
% min		 Hardness
VPN
Symbol Number UNS BS 2870
Nickel Silvers
CuNi10Zn27   CuNi12Zn24 CW401J   CW403J C74500   C75700 NS103   NS104 R360
H080		 360 - 430 230 max 35 -
- - - 80 - 110
R430
H110		 430 - 510 230 min 8 -
- - - 110 - 150
R490
H150		 490 - 580 400 min - -
- - - 150 - 180
R550
H170		 550 - 640 480 min - -
- - - 170 - 200
R620
H190		 620 min 580 min - -
- - - 190 min
CuNi18Zn20 CW409J C75200 NS106 R380
H085		 380 - 450 250 max 27 -
- - - 85 - 115
R450
H115		 450 - 520 250 min 9 -
- - - 115 - 160
R500
H160		 500 - 590 410 min 3 -
- - - 160 - 190
R580
H180		 580 - 670 510 min - -
- - - 180 - 210
R640
H200		 640 - 730 600 min - -
- - - 200 - 230
CuNi18Zn27 CW410J C77000 NS107 R390
H090		 390 - 470 280 max 30 -
- - - 90 - 120
R470
H120		 470 - 540 280 min 11 -
- - - 120 - 170
R540
H170		 540 - 630 450 min 3 -
- - - 170 - 200
R600
H190		 600 - 700 550 min - -
- - - 190 - 220
R700
H220		 700 - 800 660 min - -
- - - 220 - 250
Other Alloys
CuNi9Sn2 (Alloy 725) CW351H C72500 - R340
H070		 340 - 410 250 max 30 -
- - - 70 - 100
R380
H110		 380 - 470 200 min 8 -
- - - 110 - 150
R450
H140		 450 - 530 370 min 4 -
- - - 140 - 170
R500
H160		 500 - 580 450 min 2 -
- - - 160 - 190
R560
H180		 560 - 650 520 min - -
- - - 180 - 210
(Alloy 194) - C19400 - Annealed 300 min - 25 85 max
Half hard 360 min - 15 100 - 130
Hard 410 min - 5 130 - 140
Extra hard 460 min - 2 140 min

Copper & Alloys - Beryllium Copper

Material Designation
EN 1652 1654 or (Alloy)		 Nearest Fit Material Condition Code Material Condition Description U.T.S.
Rm
N/mm2		 0.2% Proof Stress
N/mm2
min		 Elongation A50
% min		 Hardness
VPN
Symbol Number UNS BS 2870
(Alloy 174) - C17410 - 1/2 hard *** Solution heat treated temper rolled and heat treated at the mill. 650 min - 10 180 - 230
Hard *** 760 min - 7 210 - 280
CuBe1.7 CW100C C17000 CB101 R410 *
H090 *
Y190 *		 Solution heat treated and temper rolled 410 - 530 - 35 -
- - - 90 - 150
- 190 - (380) 35 -
R1030 **
H330 **
Y890 **		 Solution heat treated temper rolled & precipitation hardened as parts 1030 - 1250 - 3 -
- - - 330 - 380
- 890 - (1140) 3 -
R510 *
H120 *
Y410 *		 Solution heat treated and temper rolled 510 - 610 - 15 -
- - - 120 - 190
- 410 - (560) 15 -
R1100 **
H340 **
Y930 **		 Solution heat treated temper rolled & precipitation hardened as parts 1100 - 1320 - 3 -
- - - 340 - 390
- 930 - (1210 3 -
R580 *
H180 *
Y510 *		 Solution heat treated and temper rolled 580 - 690 - 8 -
- - - 180 - 220
- 510 - (660) 8 -
R1170 **
H360 **
Y1030 **		 Solution heat treated temper rolled & precipitation hardened as parts 1170 - 1380 - - -
- - - 360 - 410
- 1030 - (1250) - -
R680 *
H210 *
Y620 *		 Solution heat treated and temper rolled 680 - 830 - 2 -
- - - 210 - 290
- 620 - (800) 2 -
R1240 **
H370 **
Y1060 **		 Solution heat treated temper rolled & precipitation hardened as parts 1240 - 1450 - - -
- - - 370 - 440
- 1060 -(1250) - -
Material Designation
EN 1652 1654 or (Alloy)		 Nearest Fit Material Condition Code Material Condition Description U.T.S.
Rm
N/mm2		 0.2% Proof Stress
N/mm2
min		 Elongation A50
% min		 Hardness
VPN
Symbol Number UNS BS 2870
CuBe2



















CuBe2



















CuBe2 		CW101C



















CW101C



















CW101C		 C17200



















C17200



















C17200 		CB101



















CB101



















CB101 		R410 *
H090 *
Y190 *		 Solution heat treated and temper rolled 410 - 530 - 35 -
- - - 90 - 150
- 190 - (380) 35 -
R1130 **
H350 **
Y960 **		 Solution heat treated temper rolled & precipitation hardened as parts 1130 - 1350 - 3 -
- - - 350 - 410
- 960 - (1210) 3 -
R510 *
H120 *
Y410 *		 Solution heat treated and temper rolled 510 - 610 - 15 -
- - - 120 - 190
- 410 - (560) 15 -
R1190 **
H360 **
Y1020 **		 Solution heat treated temper rolled & precipitation hardened as parts 1190 - 1420 - 3 -
- - - 360 - 430
- 1020 - (1280) 3 -
R580 *
H170 *
Y510 *		 Solution heat treated and temper rolled 580 - 690 - 8 -
- - - 170 - 220
- 510 - (660) 8 -
R1270 **
H370 **
Y1100 **		 Solution heat treated temper rolled & precipitation hardened as parts 1270 - 1490 - - -
- - - 370 - 440
- 1100 - (1350) - -
R680 *
H220 *
Y620 *		 Solution heat treated and temper rolled 680 - 830 - 2 -
- - - 220 - 290
- 620 - (800) 2 -
R1310 **
H380 **
Y1130 **		 Solution heat treated temper rolled & precipitation hardened as parts 1310 - 1520 - - -
- - - 380 - 450
- 1130 - (1420) - -
R690 ***
H210 ***
Y480 ***		 Solution heat treated temper rolled & precipitation hardened at the mill 690 - 760 - 16 -
- - - 210 - 250
- 480 - (660) 16 -
R750 ***
H230 ***
Y550 ***		 Solution heat treated temper rolled & precipitation hardened at the mill 750 - 730 - 15 -
- - - 230 - 280
- 550 - (760) 15 -
R820 ***
H250 ***
Y550 ***		 Solution heat treated temper rolled & precipitation hardened at the mill 820 - 930 - 12 -
- - - 250 - 310
- 650 - (870) 12 -
R930 ***
H280 ***
Y750 ***		 Solution heat treated temper rolled & precipitation hardened at the mill 930 - 1040 - 9 -
- - - 280 - 350
- 750 - (940) 9 -
R1060 ***
H310 ***
Y930 ***		 Solution heat treated temper rolled & precipitation hardened at the mill 1060 - 1250 - 4 -
- - - 310 - 400
- 930 - (1180) 4 -
R1200 ***
H360 ***
Y1030 ***		 Solution heat treated temper rolled & precipitation hardened at the mill 1200 - 1320 - 3 -
- - - 360 - 420
- 1030 - (1250) 3 -

Surface Finish

300 Series (Austenitic)

EN 10088 2 : 2005 Type of process route and surface finish of sheet, plate and strip.
  Abbreviation Type of process route Surface finish / Notes
Hot Rolled 1E Hot rolled, heat treated,
mechanically descaled. 		Free of scale, coarse ground or shot blasted.
1D Hot rolled, heat treated,
pickled. 		Free of scale, not as smooth as a 2D or 2B finish.
Cold Rolled 2D Cold rolled,heat treated, pickled. Smooth and dull, a finish for good ductility, not as smooth as 2B or 2R.
2B Cold rolled, heat treated, pickled Smoother than 2D, a common finish for further processing, not bright.
2R Cold rolled, bright annealed. Smooth, bright, reflective, a common finish for further processing.
2H Cold rolled, work hardened. Bright, temper rolled to obtain a higher strength.
2Q Hardened and tempered, scale free. Free of scale, either bright hardened and tempered or descaled afterwards.

400 Series (Ferritic)

EN 10088 2 : 2005 Type of process route and surface finish of sheet, plate and strip.
  Abbreviation Type of process route Surface finish / Notes
Hot Rolled 1E Hot rolled, heat treated,
mechanically descaled. 		Free of scale, coarse ground or shot blasted.
1D Hot rolled, heat treated,
pickled. 		Free of scale, not as smooth as a 2D or 2B finish.
Cold Rolled 2D Cold rolled,heat treated, pickled. Smooth and dull, a finish for good ductility, not as smooth as 2B or 2R.
2B Cold rolled, heat treated, pickled Smoother than 2D, a common finish for further processing, not bright.
2R Cold rolled, bright annealed. Smooth, bright, reflective, a common finish for further processing.
2H Cold rolled, work hardened. Bright, temper rolled to obtain a higher strength.
2Q Hardened and tempered, scale free. Free of scale, either bright hardened and tempered or descaled afterwards.

400 Series (Martensitic)

EN 10088 2 : 2005 Type of process route and surface finish of sheet, plate and strip.
  Abbreviation Type of process route Surface finish / Notes
Hot Rolled 1E Hot rolled, heat treated,
mechanically descaled. 		Free of scale, coarse ground or shot blasted.
1D Hot rolled, heat treated,
pickled. 		Free of scale, not as smooth as a 2D or 2B finish.
Cold Rolled 2D Cold rolled,heat treated, pickled. Smooth and dull, a finish for good ductility, not as smooth as 2B or 2R.
2B Cold rolled, heat treated, pickled Smoother than 2D, a common finish for further processing, not bright.
2R Cold rolled, bright annealed. Smooth, bright, reflective, a common finish for further processing.
2H Cold rolled, work hardened. Bright, temper rolled to obtain a higher strength.
2Q Hardened and tempered, scale free. Free of scale, either bright hardened and tempered or descaled afterwards.

17-7 PH (Precipitation Hardening)

EN 10088 2 : 2005 Type of process route and surface finish of sheet, plate and strip.
  Abbreviation Type of process route Surface finish / Notes
Hot Rolled 1E Hot rolled, heat treated,
mechanically descaled. 		Free of scale, coarse ground or shot blasted.
1D Hot rolled, heat treated,
pickled. 		Free of scale, not as smooth as a 2D or 2B finish.
Cold Rolled 2D Cold rolled,heat treated, pickled. Smooth and dull, a finish for good ductility, not as smooth as 2B or 2R.
2B Cold rolled, heat treated, pickled Smoother than 2D, a common finish for further processing, not bright.
2R Cold rolled, bright annealed. Smooth, bright, reflective, a common finish for further processing.
2H Cold rolled, work hardened. Bright, temper rolled to obtain a higher strength.
2Q Hardened and tempered, scale free. Free of scale, either bright hardened and tempered or descaled afterwards.

Duplex

EN 10088 2 : 2005 Type of process route and surface finish of sheet, plate and strip.
  Abbreviation Type of process route Surface finish / Notes
Hot Rolled 1E Hot rolled, heat treated,
mechanically descaled. 		Free of scale, coarse ground or shot blasted.
1D Hot rolled, heat treated,
pickled. 		Free of scale, not as smooth as a 2D or 2B finish.
Cold Rolled 2D Cold rolled,heat treated, pickled. Smooth and dull, a finish for good ductility, not as smooth as 2B or 2R.
2B Cold rolled, heat treated, pickled Smoother than 2D, a common finish for further processing, not bright.
2R Cold rolled, bright annealed. Smooth, bright, reflective, a common finish for further processing.
2H Cold rolled, work hardened. Bright, temper rolled to obtain a higher strength.
2Q Hardened and tempered, scale free. Free of scale, either bright hardened and tempered or descaled afterwards.

Mild & Carbon Steels

Surface appearances and finishes
Symbol  Characteristics Field of Applicatione Surface finish
MA Bright, metallically clean surface, pitting, small defects and scratches are permitted. All thicknesses and treatment conditions. FRR, RM, RL 2)
MB Bright, metallically clean surface; pitting, grooves and scratches are permitted as long as the uniform smooth appearance is not substantially impaired when viewed with the naked eye. Thicknesses =< 2.0mm in all conditions except A (annealed) RM, RL 2)
MC Bright, metallically clean surface; pitting, grooves and scratches are permitted as long as the uniform appearance of the mirror surface is not impaired. Thicknesses =<1.0mm in all conditions except A (annealed). SRN 2)
RR = rough, RM = matt, RL = smooth, RN = mirror 2) These code letters need not be given in the designation.

Temper Rolled

300 Series (Austenitic)

European Steel Designation
EN 10088 - 2
and for springs EN10151		 American
Designation 		Tensile Level N/mm2 European Designations
(Approximate hardness value VPN)
Number .Name AISI
nearest
fit		 C 700
(200-220)		 C850
(250-300)		 C1000
(300-350)		 C1150
(350-400)		 C1300
(400-450)		 C1500
(450 +)
1.4310 X10 Cr Ni 18-8 301
302		           *
1.4301 X5 Cr Ni 18-10 302
304		            
1.4401 X5 Cr Ni Mo 17-12-2 316            
1.4541 X6 Cr Ni Ti  18-10 321            
      * Higher tensile levels may be agreed

Key to Table

Green = Available
Red = Not Available

400 Series (Ferritic)

European Steel Designation
EN 10151 : 2002		 American
Designation 		Tensile Level N/mm2 European Designations
(Approximate hardness value VPN)
Number .Name AISI
nearest
fit		 C 700
(200-220)		 C850
(250-300)		 C1000
(300-350)		 C1150
(350-400)		 C1300
(400-450)		 C1500
(450 +)
1.4016 X6 Cr 16 430          

Key to Table

Green = Available
Red = Not Available

400 Series (Martensitic)

European Steel Designation
EN 10151 : EN 10088 - 2		 American
Designation 		Tensile Level N/mm2 European Designations
(Approximate hardness value VPN)
Number .Name AISI
nearest
fit		 C 700
(200-220)		 C850
(250-300)		 C1000
(300-350)		 C1150
(350-400)		 C1300
(400-450)		 C1500
(450 +)
1.4006 X12 Cr 13 410          
1.4028 X30 Cr 13 420            
1.4122 X39 Cr Mo 17-1 -            

Key to Table

Green = Available
Red = Not Available

17-7 PH (Precipitation Hardening)

European Steel Designation
EN 10151 : EN 10088 - 2		 American
Designation 		Tensile Level N/mm2 European Designations
(Approximate hardness value VPN)
Number .Name AISI
nearest
fit		 C 700
(200-220)		 C850
(250-300)		 C1000
(300-350)		 C1150
(350-400)		 C1300
(400-450)		 C1500
(450 +)
1.4568 X7 Cr Ni Al 17-7 631          
1.4532 X8 Cr Ni Mo Al 15-7-2 632            

Key to Table

Green = Available
Red = Not Available

Duplex

European Steel Designation
EN 10151 : EN 10088 - 2		 American
Designation 		Tensile Level N/mm2 European Designations
(Approximate hardness value VPN)
Number .Name AISI
nearest
fit		 C 700
(200-220)		 C850
(250-300)		 C1000
(300-350)		 C1150
(350-400)		 C1300
(400-450)		 C1500
(450 +)
1.4362* X2 Cr Ni N 23-4* S 39230          
1.4462 X2 Cr Ni Mo N 22-5-3 S 39209            
1.4410* X2 Cr Ni Mo N 25-7-4* S 39275            
* Patented steel grade

Key to Table

Green = Available
Red = Not Available

Applications

300 Series (Austenitic)

 European Steel Designation AISI Nearest Fit Service Properties Applications
1.4310
X10 Cr Ni 18-8
301 Lower Chrome and Nickel content increases the work hardening rate to give high strength and abrasion resistance. Particularly suitable for components requiring stretch forming, high strength or good spring properties. Springs, pressings, connectors, chemically etched components.
1.4301
X5 Cr Ni 18-10		 304 The most popular grade in the austenitic (300) series, exhibiting good corrosion resistance and formability. 1.4301 (AISI 304) can be used in the welded condition in mild environments, however 1.4307 (AISI 304L) should be used in more corrosive conditions. Floppy disk (shutter), flexible tube, expanded metal, fabrications, decorative trim, pressings, springs
1.4307
X2 Cr Ni 18-9
1.4306
X2 Cr Ni 19-11
304L Reduced Carbon content for better corrosion resistance in welded structures than the base grade 1.4301 (AISI 304).
 Water tube, bellows, pressings
1.4303
X4 Cr Ni 18-12		 305 Nickel content is increased compared with the base grade 1.4301 (AISI 304) to lower the work hardening rate. Preferred for deep drawing or spinning operations. Pen caps and bodies, deep drawn components generally.
1.4401
X5 Cr Ni Mo 17-12-2
and
1.4436
X3 Cr Ni Mo 17-13-3
 316 Molybdenum is added to increase the corrosion resistance when compared with the base grade 1.4301 (AISI 304)
Two alloys are produced having increased corrosion resistance with increasing Molybdenum.

1.4401 = 2.0 – 2.5 % Molybdenum
1.4436 = 2.5 – 3.0 % Molybdenum		 Bursting discs, seals, bellows, gaskets, expansion joints, explosion panels, tubes, diaphragms and components in chemical, petrochemical and marine applications.
1.4404
X2 Cr Ni Mo 17-12-2
1.4432
X2 Cr Ni Mo 17-12-3
1.4435
X2 Cr Ni Mo 18-14-3 		316L Reduced Carbon content for better welded corrosion resistance than 1.4401 / 1.4436 (AISI 316) As for 1.4401 and 1.4432 above.
1.4571
X6 CrNiMoTi 17-12-2
 320 A 'stabilised' version of 1.4401 (AISI 316), the addition of Titanium improves the corrosion resistance of welds by preventing the formation of chromium carbides.
 Application is usually found in welded fabrications needing excellent corrosion resistance.
1.4541
X6 Cr Ni Ti 18-10
 321 Titanium is added to oppose chromium carbide precipitation and remove the risk of deteriorating corrosion performance in welded structures as may occur in the base grade 1.4301 (AISI 304).
 Expansion joints, seals, bellows, gaskets, honeycomb seals, thermal insulation, tube and bellows. The use of
“stabilised” grades is favoured by the aerospace industry, particularly in engine related applications.
1.4550
X6 Cr Ni Nb 18-10
 347 Niobium is added to oppose chromium carbide precipitation in the same way as Titanium is used in the alloy 1.4541 above. As above, where elevated operating temperatures may otherwise encourage the formation of chromium carbides.

400 Series (Ferritic)

 European Steel Designation AISI Nearest Fit Service Properties Applications
1.4016
X6 Cr 16 		430 Lower Chrome and the absence of Nickel result in a lower work hardening rate than austenitic grades resulting in a lower breaking strength especially when fully temper rolled. Most often used in the annealed (soft) condition this grade has good formability and a moderate corrosion resistance. Unlike the austenitic grades the ferritic steels respond strongly to a magnet. When temper rolled and annealed the surface finish is reflective. It is significantly lower cost than the austenitic grades. Can only be hardened by cold work. Automotive and domestic appliance trim, domestic sinks, domestic washer drums, floppy disc hub and pressings generally.
1.4113
X6 Cr Mo 16-1		 434 This grade has improved corrosion resistance compared with 1.4016 due to the addition of 1.0% Molybdenum. A favourite choice for up market automotive trim.Applications are found where there is a need to retain a good appearance
1.4605
X2 Cr Al Ti 18-2 		type
18 - SR		 This steel has similar characteristics to the base ferritic grade 1.4016 and with improved high temperature resistance to scaling and increased electrical resistance.
 It is used in heat exchangers, electrical resistance applications such as dynamic brakingand overload resistors.

400 Series (Martensitic)

 European Steel Designation AISI Nearest Fit Service Properties Applications
1.4006
X12 Cr 13		 410 This grade of stainless steel can be hardened by heat treatment and therefore has a wide range of mechanical properties. It has low resistance to corrosion when compared with austenitic grades, but this is balanced by a low cost. This grade strongly responds to a magnetic field. springs, pressings
1.4028
X30 Cr 13		 420 Properties very similar to those of 1.4006, this grade, with increased Carbon content, has improved potential hardness and wear / abrasion resistance. springs, knives and cutting edges generally,doctor blades and similar printing industry wear and scraping applications
1.4122
X39 Cr Mo 17-1		 - With the addition of 1% Molybdenum and increased Chromium this alloy has improved corrosion resistance and hardenability.
all of the above and corrosion sensitive applications, circlips

17-7 PH (Precipitation Hardening)

 European Steel Designation AISI Nearest Fit Service Properties Applications
1.4568
X7 Cr Ni Al 17-7		 631 Improved corrosion resistance when compared with martensitic steels although less so than the base grade austenitic stainless steel 1.4301 (AISI 304); good formability in the soft condition; good fatigue life after hardening; high cost heat treatment from the solution annealed condition; low cost heat treatment from the temper rolled condition; high strength and stress relaxation properties. springs, pressings, diaphragms, encapsulated bellows, flexures, fluid seal springs
1.4532
X8 Cr Ni Mo Al 15-7-2		 632 As above although slightly higher mechanical properties can be achieved following heat treatment; applications are as above

Duplex

 European Steel Designation UNS Nearest Fit Service Properties Applications
1.4362*
X2 Cr Ni N 23-4* 		S 39230*
(replaces S 32304)		 1.4362* has a general corrosion resistance equal to or better than 1.4301/1.4307 (AISI 304/304L)Duplex stainless steels generally have excellent resistance to corrosion and particularly to stress corrosion cracking when exposed to chloride bearing conditions.When compared with austenitic stainless steels the duplex steels have a high yield strength roughly double in the annealed condition offering considerable design advantages weight for weight.The duplex stainless steels can be strengthened by cold rolling to a high mechanical strength and exhibit a high resistance to relaxation therefore good spring properties. Chemical, petrochemical and oilfield plant as pipe-work, fabrications and gaskets.
1.4462
X2 Cr Ni Mo N 22-5-3		 S 39209
(replaces S 31803)		 1.4462 has a general corrosion resistance equal to or better than 1.4401/1.4404 (AISI 316/316L) As above and includes oil field applications where there is exposure to sulphide stress corrosion cracking.
1.4410
*X2 Cr Ni Mo N 25-7-4*		 S 39275*
(replaces S 32750)		 1.4410 in addition to excellent general corrosion resistance this grade is highly resistant to corrosion by organic acids even at elevated temperatures.
 As above
* Patented steel grade

Service Properties

Copper & Alloys - Pure Copper

Symbol 
EN 1652		 Service Properties Applications
Cu-ETP Excellent formability and conductivity but can be embrittled if heated in reducing atmospheres because of the presence of Oxygen ELECTRICAL COMPONENTS (EARTHING STRAPS, TRANSFORMER WINDING, CONTACTS), HEAT EXCHANGERS, CABLE WRAP.           

USE Cu-OF WHEN EMBRITTLEMENT IS POSSIBLE.
Cu-FRTP
Cu-OF Reduced oxygen to prevent embrittlement.
Similar formability to Cu-ETP
Cu-DLP With no oxygen present embrittlement problems do not arise, however the conductivity suffers in the presence of phosphorus. EXTENSIVELY USED FOR FABRICATION AND GENERAL ENGIEERING WHEN BRAZING OR WELDING IS TO BE USED AND HIGH CONDUCTIVITY NOT A REQUIREMENT.
Cu-HLP

Copper & Alloys - Copper Alloy

Symbol (Alloy) Service Properties Copper Alloys Applications
CuZn30 70/30 Brass. Maximum ductility of the Cu - Zn alloys                         
Often chosen for deep drawing		 AMMUNITION SHELLS, LIGHT FITTINGS, CONNECTORS, SWITCHES
CuZn33 A good cold working alloy SHIMS, DECORATIVE GOODS, BELLOWS, CONTACTS, SPRINGS, RFI SHIELDING
CuZn37 General purpose alloy for the more normal types of forming
CuSn5 Good formability combined with resistance to corrosion and fatigue SPRINGS, INSTRUMENT COMPONENTS, CONTACTS, CONNECTORS, BELLOWS
CuSn6 Extra tin giving improved wear resistance. Generally used for more severe service conditions than CuSn5
CuNi10Zn27
CuNi12Zn24
CuNi18Zn20
CuNi18Zn27		 Alloys notable for their good corrosion resistance and attractive colour. The range of alloys becomes progressively whiter with increased nickel content. Excellent cold formability, readily soldered or brazed. SPRINGS, CONTACTS, CONNECTORS, RFI SHIELDING, JEWELLRY, COINS
(Alloy 194) For applications requiring excellent formability plus high strength and conductivity. Good resistance to softening. LEADFRAMES, SPRINGS, CLAMPS, CIRCUIT BREAKER COMPONENTS, TERMINALS, RELAYS AND SWITCH SPRINGS, BELLOWS
CuNi9Sn2 Excellent formability and resistance to corrosion in sea water.

Copper & Alloys - Beryllium Copper

Symbol (Alloy) Service Properties Applications
CuBe1.7
CuBe2
1.8% Be/Cu
Alloy 25
Alloy 165		 Precipitation hardening alloys with similar beryllium content. Exhibits remarkable strength, elasticity and fatigue resistance. Usually formed and then heat treated but can also be formed in the aged condition. SPRINGS, CONTACTS, DIAPHRAGMS, BELLOWS, CONNECTORS
Alloy 174 Alloy 174 is a lower beryllium content alloy which is available in the mill hardened condition. It offers superior performance over bronzes and brasses, particularly where conductivity and relaxation are design priorities.
Knight Strip Metals, Linkside, Summit Road, Cranborne Ind Estate, Potters Bar, Hertfordshire. EN6 3JL
Telephone: +44(0)1707 650251   Fax: +44(0)1707 651238   E-mail: sales@knight-group.co.uk

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