Cobalt Alloys
Elgiloy alloy, Haynes 188, Haynes 25, and MP35N available in precision strip and wire
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
High Melting Point: Cobalt alloys offer a higher melting point compared to many other alloys, making them suitable for applications that require resistance to extreme heat.
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.
Resistance to Oxidation: Cobalt alloys exhibit an excellent resistance to oxidation, which helps to maintain their structural integrity even in highly reactive environments.
Resistance to Wear, Corrosion, and Heat: They provide increased resistance to wear, corrosion, and heat, enhancing their longevity and reliability. This makes cobalt alloys suitable for applications that demand durability and resistance to harsh conditions.
Resistance to Sulphides: Cobalt alloys show great resistance against sulphides, effectively preventing any sulphidation of the material.
What are the disadvantages of using Cobalt Alloys?
Cost: Cobalt alloys can be relatively expensive when compared to other metals due to their scarcity and the intensive refining process needed to extract cobalt from ore deposits.
Higher Cost than Competing Alloys: While cobalt-based alloys possess similar strengths as nickel-based alloys, such as resistance to heat, wear, and corrosion, the performance difference between the two is often not significant enough in many applications to justify the higher price of cobalt-based alloys.
Please note that these disadvantages may not apply in all situations, and the choice of alloy may depend on specific applications and requirements.
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.
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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:
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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.
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Cobalt-Nickel Alloys (CoNi):Â Their non-magnetic nature and corrosion resistance make them indispensable in electronic and aerospace applications.
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Cobalt-Chrome-Molybdenum Alloys (CoMo):Â More robust and corrosion-resistant, these alloys are common in creating orthopaedic and dental implants.
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Aluminum-Nickel-Cobalt Alloys:Â These alloys, with cobalt content ranging between 5% to 35% by weight, are primarily used in magnetic applications.
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Iron-Cobalt Alloys:Â These alloys comprise approximately 5% to 12% cobalt by weight and are used in various high-performance applications.
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Cobalt Rare-Earth Intermetallics:Â These alloys exhibit some of the highest magnetic properties of all known materials.
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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 CHARACTERISTICS AND APPLICATIONS | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TRADE MARKED METALS | MATERIAL NUMBER EN / DIN | UNS nearest fit | AMS | TYPICAL CHEMICAL COMPOSITION % | |||||||||||||
| Al | C | Co | Cr | Cu | Fe | Mn | Mo | Ni | P | Si | S | Ti | Others | ||||
| Elgiloy® alloy Phynox® | W.Nr 2.4711 | R30003 | AMS 5833, AMS 5834 | - | 0.15 max | 39.0 – 41.0 | 19.0 – 21.0 | - | balance | 1.5 – 2.5 | 6.0 – 8.0 | 14.0 – 16.0 | 0.015 max | 1.20 max | 0.015 max | - | Be: 0.1 max |
| MP35N® | W.Nr 2.4999 | R30035 | AMS 5844, 5845, 5758 | - | 0.025 max | balance | 19.0 – 21.0 | - | 1.0 max | 0.15 max | 9.0 – 10.5 | 33.0 – 37.0 | 0.015 max | 0.15 max | 0.010 max | 1.0 max | - |
| L605 (Haynes® 25) | W.Nr 2.4964 / 2.4967 | R30605 | - | - | 0.05 – 0.15 | balance | 19.0 – 21.0 | - | 3.0 max | 1.0 – 2.0 | - | 9.0 – 11.0 | 0.040 max | 0.40 max | 0.030 max | - | W: 14.0 – 16.0 |
| Haynes® 188 Alloy | W.Nr 2.4683 | R30188 | - | - | 0.05 – 0.15 | Strip: balance Wire: 30 (balance) | Strip: 21.0 – 23.0 Wire: 20.0 – 24.0 | - | 3.00 max | 1.25 max | - | 20.0 – 24.0 | 0.020 max | 0.20 – 0.50 | 0.015 max | - | B: 0.015 max W: Strip: 13.0-15.0 Wire: 13.0 – 16.0 La: Strip: 0.03 – 0.15 Wire: 0.03 – 0.12 |
| COBALT ALLOY MATERIAL CHARACTERISTICS AND APPLICATIONS | |||||||
|---|---|---|---|---|---|---|---|
| TRADE MARKED METALS | MATERIAL NUMBER EN / DIN | UNS nearest fit | AMS | Proof Strength 0.2% Min (N/mm2) | Tensile Strength (MPa) | Elong. % Min. (50mm Gauge Length) | Hardness Max (VPN) |
| Elgiloy® alloy Phynox® | W.Nr 2.4711 | R30003 | AMS 5833, AMS 5834 | Available by Request | |||
| MP35N® | W.Nr 2.4999 | R30035 | AMS 5844, 5845, 5758 | Available by Request | |||
| L605 (Haynes® 25) | W.Nr 2.4964 / 2.4967 | R30605 | - | Available by Request | |||
| Haynes® 188 Alloy | W.Nr 2.4683 | R30188 | AMS 5608 | - | 130-160 ksi (900-1100 MPa) | 50% | 89 HRB |
| COBALT ALLOY MATERIAL CHARACTERISTICS AND APPLICATIONS | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| TRADE MARKED METALS | MATERIAL NUMBER EN / DIN | UNS nearest fit | AMS | Tensile Strength (MPa) | Resistivity Ohms/cm | Density G/cm³ | Temp Coefficient of Resistance 20-100°C | Melting Point °C | Specific Heat J/Kg.K @20°C | Linear Expansion Coefficient 10-6/°C | Temperature °C |
| Elgiloy® alloy Phynox® | W.Nr 2.4711 | R30003 | AMS 5833, AMS 5834 | Available by Request | |||||||
| MP35N® | W.Nr 2.4999 | R30035 | AMS 5844, 5845, 5758 | Available by Request | |||||||
| L605 (Haynes® 25) | W.Nr 2.4964 / 2.4967 | R30605 | - | Available by Request | |||||||
| Haynes® 188 Alloy | W.Nr 2.4683 | R30188 | AMS 5608 | Available by Request | |||||||
| COBALT ALLOY MATERIAL CHARACTERISTICS AND APPLICATIONS | ||||||
|---|---|---|---|---|---|---|
| TRADE MARKED METALS | MATERIAL NUMBER EN / DIN | AMS | Key Features | Key Markets | Applications | |
| UNS nearest fit | ||||||
| Elgiloy® alloy Phynox® | W.Nr 2.4711 | R30003 | AMS 5833, AMS 5834 | Elgiloy® alloy is a high-performance, Cobalt-Chromium-Nickel-Molybdenum alloy known for its exceptional strength, excellent corrosion resistance, and versatility in harsh environments with extreme conditions. It exhibits high resistance to sulfide stress corrosion cracking and is virtually immune to crevice and stress corrosion and pitting even at the highest strength levels. Excellent resistance to fatigue is a key advantage of this alloy, ensuring a long service life in applications where it is subjected to cyclic loading. Equally, its remarkable strength makes it suitable for applications requiring high load-bearing capacity and resistance to deformation. Due to biocompatibility, it is an ideal choice for medical and dental applications where it comes into contact with the human body. As a non magnetic alloy, it is suitable for applications where magnetic interference must be minimized. This alloy maintains its mechanical properties at high temperatures, making it suitable for use in high-temperature applications. Furthermore, it can operate at cryogenic temperatures up to 454°C (850°F). With a unique blend of properties, and ease of formability and machinability, Elgiloy® facilitates the production of complex shapes and components, making it a popular alloy for applications across multiple sectors. | Oil & Gas, Marine, Medical, Dental, Aerospace, Defense and Space Exploration. | Springs, torsion bars, seals, orthodontic wire, medical devices, surgical implants, satellite communications equipment, weapons systems and semiconductor components, watches |
| MP35N® | W.Nr 2.4999 | R30035 | AMS 5844, 5845, 5758 | MP35N® Alloy is a high-performance, ultra-high strength, nickel-cobalt-chromium-molybdenum alloy known for its exceptional strength, corrosion resistance, high fatigue strength, and biocompatibility. It exhibits excellent resistance to various types of corrosion, including stress corrosion cracking, pitting, and crevice corrosion, particularly in harsh environments and under extreme conditions. In seawater MP35N® is virtually immune to crevice and stress corrosion and pitting even at the highest strength levels and can operate at cryogenic temperatures up to 454°C (850°F). MP35N® Alloy maintains its mechanical properties at elevated temperatures, making it suitable for use in high-temperature applications. It also offers excellent resistance to fatigue, ensuring a long service life in applications where it is subjected to cyclic loading. This alloy is known for its good weldability and can be easily formed and machined, allowing for the production of stong components with complex shapes. | Oil & Gas Extraction, Marine Medical & Dental, Aerospace, Defense and Space Exploration. | Springs, torsion bars, fasteners, seals, medical devices and implants. |
| L605 (Haynes® 25) | W.Nr 2.4964 / 2.4967 | R30605 | - | Udimet® Alloy L605, also known as Haynes® Alloy 25, is a high-performance, Cobalt-Chromium-Tungsten solid-solution strengthened superalloy. It is known for its exceptional strength, corrosion resistance, and high-temperature stability. This versatile material offers a wide range of benefits, making it an attractive choice for manufacturers in various industries. Udimet® Alloy L605 boasts remarkable strength, making it suitable for applications that require high load-bearing capacity and resistance to deformation. This alloy exhibits excellent resistance to various types of corrosion, including oxidation, carburisation and sulfidation, particularly in harsh environments and under extreme conditions. Even at temperatures up to 1093°C (2000°F), this alloy demonstrates excellent resistance to oxidation, ensuring a long service life in challenging environments. Mechanical properties are maintained at elevated temperatures, making it suitable for use in high-temperature applications, such as jet engines and gas turbines. With good fatigue and galling resistance and exceptional wear resistance, it is well suited for applications where components are subjected to friction and wear. This alloy can also be easily formed and machined and offers good weldability. | Medical, Aerospace, Land-Based Turbines, Power Generation, Electronics | Bearings, shafts, springs, Combustor liners, furnace liners, gas turbine rotors, nozzle diaphragm valves, springs, heart valves and surgical fixation wire. |
| Haynes® 188 Alloy | W.Nr 2.4683 | R30188 | - | Haynes® 188 Alloy is a high-performance, cobalt-nickel-chromium-tungsten alloy known for its excellent strength, oxidation resistance, and high-temperature stability and exceptional wear resistance. Haynes® Alloy 188 is not age hardenable but may be cold worked to achieve higher tensile and yield strength. In addtion to its remarkable strength, this alloy boasts exhibits excellent resistance to oxidation, even at temperatures up to 1149°C (2100°F), ensuring a long service life in challenging environments. Haynes® 188 maintains its mechanical properties at elevated temperatures, making it suitable for use in high-temperature applications. Sulfidation resistance is another key benefit, making it ideal for applications where components are exposed to sulfur-containing environments. The alloy is also known for its good weldability, and is be easily formed and machined. | Aerospace, Chemical Processing, and Land-Based Gas Turbines, Nuclear Energy | Combustor liners and cans, furnace liners, flame hoods, gas turbine rotors, and nozzle diaphragm valves, heat exhangers |
Why choose the Knight Group as your supplier of Cobalt Alloys?
As a leading supplier of high-quality alloys, we take pride in offering a range of cobalt alloys in precision strip and wire that meets the diverse needs of industries across the globe. Whether you require Elgiloy Alloy, Haynes 188, Haynes 25, or 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:
Unrivaled 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
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