Form: This specification covers a corrosion and heat resistant cobalt alloy in the form of investment castings. Application: Primarily for small parts@ such as turbine blades and vanes@ requiring high strength up to 1500??(815?? and oxidation resistance up to 2000??(1095??. Exposure to elevated temperatures may cause hardening of this alloy: e.g.@ exposure to approximately 1475??(800?? for 50 hr may result in hardness as high as 45 HRC.