Copper Alloys; Grades & Chemical Compositions (% by weight) - Extract from EN 1652

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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