Cobalt Alloys
Elgiloy® alloy | Haynes® 188 | Haynes® 25 | MP35N®
Precision Strip & Wire Stock and Service Centre
Available in strip and wire
Cobalt alloys are a group of alloys that have cobalt as their base material. They are prized for their resistance to wear, corrosion, and heat, which contributes to their longevity and high reliability. Whether you require Elgiloy Alloy, Haynes 188, Haynes 25, or MP35N, or another alloy solution, the Knight Group have the perfect solution to elevate your production. With our extensive industry experience and a vast network of reliable suppliers,
Cobalt Alloys
ELGILOY® / 2.4711 / R30003
HAYNES® 25 / L605 / 2.4964 / 2.4967 / R30605
HAYNES® 188 / 2.4683 / R30188
MP35N® / 2.4999 / R30035
Understanding the benefits of Cobalt Alloys
What are the benefits of using Cobalt Alloys
Strength: Cobalt alloys are known for their strength. This robust physical property makes cobalt alloys much stronger than other metals and desirable in high-strength applications where other metals may fail to withstand the same level of stress.
What are the disadvantages of using Cobalt Alloys?
Properties of Cobalt Strip and Cobalt Wire
Cobalt alloys, the durable metallic composites with cobalt as their base material, play a crucial role in enhancing the performance and lifespan of various applications due to their exceptional resistance to wear, heat, and corrosion. Historically, many of the commercial cobalt-base alloys are derived from cobalt–chromium–tungsten or cobalt–chromium–molybdenum. Nickel is another common alloying element in this group of alloys. Cobalt alloys are unmatched in their high-temperature strength, toughness, and corrosion resistance, which makes them a go-to choice in many industrial applications.
Explore the wide range of Cobalt alloys
Since their inception in the early 1900s, numerous cobalt alloys have been developed, each exhibiting unique properties and applications according to their distinct composition. Here’s a look at six principal cobalt alloy types:
Cobalt-Chromium Alloys (CoCr):Â Renowned for their superior wear resistance and outstanding biocompatibility, these alloys find extensive use in the medical and dental sectors.
Cobalt-Nickel Alloys (CoNi):Â Their non-magnetic nature and corrosion resistance make them indispensable in electronic and aerospace applications.
Cobalt-Chrome-Molybdenum Alloys (CoMo):Â More robust and corrosion-resistant, these alloys are common in creating orthopaedic and dental implants.
Aluminum-Nickel-Cobalt Alloys:Â These alloys, with cobalt content ranging between 5% to 35% by weight, are primarily used in magnetic applications.
Iron-Cobalt Alloys:Â These alloys comprise approximately 5% to 12% cobalt by weight and are used in various high-performance applications.
Cobalt Rare-Earth Intermetallics:Â These alloys exhibit some of the highest magnetic properties of all known materials.
It is important to note that these categories are not exhaustive, and the properties of individual alloys may vary based on composition and processing techniques. Manufacturers may choose an alloy according to its specific properties and the requirements of a given application.
| COBALT ALLOY MATERIAL TYPICAL CHEMICAL PROPERTIES | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Designations | Applicable Specifications | TYPICAL CHEMICAL COMPOSITION % | |||||||||||||||||
| Commercial Name | UNS (nearest fit) | European Designation (nearest fit) | ASTM (nearest fit) | AMS (nearest fit) | Other Standards | Al | C | Co | Cr | Cu | Fe | Mn | Mo | Ni | P | S | Si | ||
| Elgiloy® alloy | R30003 | W.Nr 2.4711 | ASTM F1058 (Strip, Foil & Wire) | AMS 5876 (Strip and Foil), AMS 5833 (Wire), AMS 5834 (Wire) | NACE MR 0175 & MR 0103, ISO 5832-7 | - | 0.15 max | 39.0 – 41.0 | 19.0 – 21.0 | - | bal. | 1.5 – 2.5 | 6.0 – 8.0 | 15.0 – 16.0 | 0.015 max | 0.015 max | 1.20 max | ||
| MP35N® | R30035 | W.Nr 2.4999 | ASTM F688 (Strip and Foil), Wire: ASTM F562 | AMS 5844 (Wire), AMS 5845 (Wire), AMS 5758 (Wire) | NACE MR0175 (ISO 15156-3), NACE MR0103, ISO 5832-6 | - | 0.025 max | bal. | 19.0 – 21.0 | - | 1.00 max | 0.15 max | 9.0 – 10.5 | 33.0 – 37.0 | 0.015 max | 0.010 max | 0.15 max | ||
| Haynes® 25 / L605 | R30605 | W.Nr 2.4964 / 2.4967 | ASTM F90 (Wire) | AMS 5537 (Strip and Foil), AMS 5796 (Wire) | Rolls Royce MSRR 7053, NACE MR0175/ISO 15156-3, ISO 5832-5 | - | 0.05 – 0.15 | bal. | 19.0 – 21.0 | - | 3.00 max | 2.0 max | - | 9.0 – 11.0 | - | - | 1.00 max | ||
| Haynes® 188 Alloy | R30188 | W.Nr 2.4683 | - | AMS 5608 (Strip and Foil) | GE B50A712, PWA 1042, Rolls Royce MSRR 7165 | - | 0.05 – 0.15 | bal. | 20.0 – 24.0 | - | 3.00 max | 1.25 max | - | 20.0 – 24.0 | - | - | 0.20 – 0.50 | ||
| COBALT ALLOY MATERIAL PHYSICAL PROPERTIES AND STRIP MECHANICAL PROPERTIES | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Designations | Applicable Specifications | Temper | Proof Strength 0.2% Min (N/mm2) | ||||||||||||
| Commercial Name | UNS (nearest fit) | European Designation (nearest fit) | ASTM (nearest fit) | AMS (nearest fit) | Other Standards | ||||||||||
| Elgiloy® alloy | R30003 | W.Nr 2.4711 | Strip, Foil & Wire: ASTM F1058 | Strip and Foil: AMS 5876 Wire: AMS 5833, AMS 5834 | NACE MR 0175 & MR 0103, ISO 5832-7 | Annealed | Not Specified | ||||||||
| Spring Temper | Not Specified | ||||||||||||||
| Spring Temper + Aged | Not Specified | ||||||||||||||
| MP35N® | R30035 | W.Nr 2.4999 | Strip and Foil: ASTM F688 Wire: ASTM F562 | Wire: AMS 5844, 5845, 5758 | NACE MR0175 (ISO 15156-3), NACE MR0103, ISO 5832-6 | Annealed | Not Specified | ||||||||
| COBALT ALLOY MATERIAL PHYSICAL PROPERTIES AND WIRE MECHANICAL PROPERTIES | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Designations | Applicable Specifications | Temper | Tensile Strength (MPa) | Suggested Operating Conditions | Temp Coefficient of Resistance 20-100°C | Melting Point °C | Specific Heat J/Kg.K @20°C | ||||||||||||
| Commercial Name | UNS (nearest fit) | European Designation (nearest fit) | ASTM (nearest fit) | AMS (nearest fit) | Other Standards | ||||||||||||||
| Elgiloy® alloy | R30003 | W.Nr 2.4711 | ASTM F1058 (Strip, Foil & Wire) | AMS 5876 (Strip and Foil) AMS 5833 (Wire), AMS 5834 (Wire) | NACE MR 0175 & MR 0103, ISO 5832-7 | Annealed | 830-1035 MPa (120 – 150 ksi) | -184°C to 454°C (-300°F to 850°F) | Not Available | 1120°C (2048°F) | Not Available | ||||||||
| Spring Temper | 1515 – 2000 MPa ( 220 – 290 ksi) | -184°C to 454°C (-300°F to 850°F) | |||||||||||||||||
| Spring Temper + Aged | 1790 – 2275 MPa (260– 330 ksi) | -184°C to 454°C (-300°F to 850°F) | |||||||||||||||||
| MP35N® | R30035 | W.Nr 2.4999 | ASTM F688 (Strip and Foil), ASTM F562 (Wire) | AMS 5844 (Wire), AMS 5845 (Wire), AMS 5758 (Wire) | NACE MR0175 (ISO 15156-3), NACE MR0103, ISO 5832-6 | Annealed | 827-965 MPa (120 – 140 ksi) | -184°C to 399°C (-300°F to 750°F) | Not Available | >1300°C (>2370°F) Est. | Not Available | ||||||||
| COBALT ALLOY MATERIAL CHARACTERISTICS AND APPLICATIONS | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Designations | Applicable Specifications | Notable Properties | |||||||
| Commercial Name | UNS (nearest fit) | European Designation (nearest fit) | ASTM (nearest fit) | AMS (nearest fit) | Other Standards | ||||
| Elgiloy® alloy | R30003 | W.Nr 2.4711 | ASTM F1058 (Strip, Foil & Wire) | AMS 5876 (Strip and Foil), AMS 5833 (Wire), AMS 5834 (Wire) | NACE MR 0175 & MR 0103, ISO 5832-7 | CHEMICAL PROPERTIES: Excellent resistance to sulfide stress corrosion cracking and pitting. Virtually immune to crevice and stress corrosion in seawater. High resistance to oxidation and corrosion. PHYSICAL PROPERTIES: High strength, ductility, and fatigue life. Non-magnetic properties. Biocompatible for medical applications. WORKABILITY: Excellent formability and machinability. Age-hardenable with strength increases up to 25% through cold reduction. SERVICE TEMPERATURE RANGE: Cryogenic temperatures up to 454°C (850°F). | |||
| MP35N® | R30035 | W.Nr 2.4999 | ASTM F688 (Strip and Foil), Wire: ASTM F562 | AMS 5844 (Wire), AMS 5845 (Wire), AMS 5758 (Wire) | NACE MR0175 (ISO 15156-3), NACE MR0103, ISO 5832-6 | CHEMICAL PROPERTIES: Ultra-high strength with excellent corrosion resistance. Resistant to hydrogen sulfide, salt water, and chloride solutions. Excellent resistance to stress corrosion cracking and hydrogen embrittlement. PHYSICAL PROPERTIES: Ultra-high tensile strength (260-300 ksi). Good toughness, ductility, and biocompatibility. Non-magnetic properties. WORKABILITY: Good weldability and formability. Easily machined for complex shapes. Work-strengthened to achieve optimal properties. SERVICE TEMPERATURE RANGE: Cryogenic temperatures up to 454°C (850°F). | |||
| Haynes® 25 / L605 | R30605 | W.Nr 2.4964 / 2.4967 | ASTM F90 (Wire) | AMS 5537 (Strip and Foil), AMS 5796 (Wire) | Rolls Royce MSRR 7053, NACE MR0175/ISO 15156-3, ISO 5832-5 | CHEMICAL PROPERTIES: Excellent oxidation resistance up to 1093°C (2000°F). Outstanding resistance to sulfidation and carburisation. Good resistance to acids, including hydrochloric and nitric acid. PHYSICAL PROPERTIES: Solid-solution strengthened with excellent high-temperature strength. Good wear and galling resistance. Non-magnetic properties. WORKABILITY: Good forming and welding characteristics. Responds well to cold working (work-hardens rapidly). Excellent formability amongst cobalt alloys. SERVICE TEMPERATURE RANGE: Continuous service up to 980°C (1795°F), intermittent to 1093°C (2000°F). | |||
| Haynes® 188 Alloy | R30188 | W.Nr 2.4683 | - | AMS 5608 (Strip and Foil) | GE B50A712, PWA 1042, Rolls Royce MSRR 7165 | CHEMICAL PROPERTIES: Excellent oxidation resistance up to 1095°C (2000°F). Outstanding sulfidation resistance. Excellent resistance to hot corrosion and thermal fatigue. PHYSICAL PROPERTIES: Excellent high-temperature strength and stability. Good ductility is maintained at elevated temperatures. Superior thermal fatigue resistance. WORKABILITY: Good forming and welding characteristics. Not age-hardenable but strengthened through cold working. Easily formed and machined. SERVICE TEMPERATURE RANGE: Long-term continuous exposure up to 1095°C (2000°F), intermittent to 1149°C (2100°F). | |||
Enquire About Cobalt Alloys in Precision Strip & Wire
Looking for cobalt alloys in precision strip, sheet or wire?Â
Unlock the limitless potential of cobalt alloys with Knight Group. Contact us today to discuss your requirements and receive a tailored quotation.
Let our alloys propel your projects to new heights of success.
Use the links below or contact us directly at:
Precision Strip: +44 (0)121 322 8400
Precision Wire: +44 (0)1707 645261
Why choose the Knight Group as your Cobalt Alloys Supplier?
As a leading supplier of high-quality alloys, we take pride in offering a range of cobalt alloys in precision strips and wire that meet the diverse needs of industries across the globe. Whether you require Elgiloy® Alloy, Haynes® 188, Haynes® 25, MP35N®, or another alloy solution, we have the perfect solution to elevate your production. With our extensive industry experience and a vast network of reliable suppliers, we ensure that our alloys meet the most stringent standards, providing you with peace of mind and exceptional results. Our Cobalt Alloy range is sourced from high-quality mills to ensure it meets the requirements of even the most demanding applications.
When you choose Knight Group, you gain access to:
Unrivalled Expertise: Our knowledgeable team is always ready to assist you in selecting the right cobalt alloy for your specific requirements, providing technical support and guidance every step of the way.
Superior Quality: We partner with reputable manufacturers to offer cobalt alloys that meet rigorous quality control measures, ensuring exceptional performance, consistency, and reliability.
Quick Turnaround: We understand the importance of timeliness in your projects. With our streamlined processes and efficient supply chain, we strive to provide the fastest turnaround times so you can stay ahead of schedule.
Custom Solutions: As one of the largest independent processors in Europe, our niche offer of strip processing and wire processing capabilities makes us a valuable partner to our customers in need of custom solutions. We recognise that each project is unique. That’s why we offer tailored solutions, including cut-to-size options, special packaging, and custom alloys, to meet your exact specifications and ensure optimal performance.
Unlock the limitless potential of cobalt alloys with Knight Group. Contact us today to discuss your requirements and let our alloys propel your projects to new heights of success.
Precision Metal Processing
All data is provided for informational purposes only. In no event will the Knight Group and its subsidiaries, be liable for in respect of any action taken by any third party arising from using the information taken from our online or printed sources. Chemical and Mechanical Properties should not be construed as maximum or minimum values for specifications, nor should information be used to assess suitability for a particular use or application. The information and data provided is deemed to be accurate to the best of our knowledge and may be revised anytime without notice and assume no duty to update