Haynes 25 Haynes Powder

Haynes 25 alloy (UNS R30605) (L605) (2.4964) (2.4967) (CoCr20W15Ni) (Stellite 25) is a cobalt-nickel-chromium-tungsten alloy that combines excellent high-temperature strength with good resistance to oxidizing environments up to 1800°F (980°C) for prolonged exposures, and excellent resistance to sulfidation.

Haynes 25 alloy is suitable for a number of component applications in the aerospace industry, including parts in established military and commercial gas turbine engines. In modern engines, it has largely been replaced by newer materials such as Haynes 188 alloy, and, most recently, by Haynes 230 alloy, which possess improved properties. Another area of significant usage for Haynes 25 alloy is as a bearing material, for both balls and races.

Haynes 25 alloy is an austenitic alloy with hardness typically 250 BHN and never higher than 275 BHN by specification, Not significantly hardenable. Does not respond to customary aging treatments, but strain aging at relatively low temperatures (700-1100° F) can improve creep and rupture strength when the alloy is in service at temperatures under 1300° F. Also, tensile and creep strength can be improved by cold working.

Truer Haynes 25 alloy powder was developed since 2017 for AM application, such as laser powder bed and DED additive manufacturing. It can be produced by our gas atomized process (sphericity >0.9) and PREP process (better sphericity and less satellite & hollow powders). Its chemical composition and some typical powder properties can be found in the below datasheet.