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UNS R30605 - Alloy L605

UNS R30605 - Alloy L605

Alloy L-605/UNS R30605 is a cobalt-based alloy, renowned for its excellent formability and high temperature properties. It is resistant to oxidation and carburization up to 1900F, and can be significantly hardened by cold working. Its strain aging at 700-1100F greatly improves its creep and stress rupture strengths up to 1300F.

Equivalent grades

• UNS R30605
• Alloy L605
• AISI 670
• KC20WN
• Haynes 25
• Chrome-Cobalt L605
• HS25
• WF-11
• GH605

Chemical Composition Reference


Physical Property Reference

• Density: 9.27 g/cm³

• Melting Point: 1329-1410℃

• Tensile Strength: 994 MPa

• Yield Strength: 466 MPa

• Elongation at break: 50%

Stock & Dimensions

Our warehouse has a large number of stock to provide you with a variety of products in different sizes, and can also customize the size according to your needs.
• Bar: 0.5~600mm Diameter
• Coil: 0.5~150mm Thick
• Plate: 0.5~200mm Thick
• Pipe: 6~630mm External Diameter; 0.5~40mm Wall Tick
• Available in specific sizes

Product Forms

We provide you with a variety of product forms, including but not limited to:
• Bar/Rod
• Pipe/Tube
• Coil/Strip
• Plate/Sheet/Circle
• Wire
• Fitting (Flange, Elbow, Tee...)
• Customize

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UNS R30605 - Alloy L605

Essential details
UNS R30605- Alloy L605 is a durable cobalt-based alloy offering excellent resistance to high temperature, up to 1800°F. The alloy is characterized by superior performance, with test results having demonstrated its strength and ductility up to 2150°F. As one of the most well-researched alloys, it's an excellent choice for endurance and long-term use.

It excels in extreme temperature applications, offering superior strength, corrosion resistance, and weldability. L605 is compatible with welding processes such as gas tungsten arc, gas metal arc, shielded metal arc, electron beam, and resistance welding.


- Gas turbine engine combustion chambers and afterburners

- High temperature ball bearings and bearing races

- Springs

- Heart valves

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