Form: This specification covers a corrosion-resistant steel in the form of sand or centrifugal castings. Application: Primarily for parts such as accessory components requiring corrosion resistance and strength up to 600 ??(315 ??. Certain processing procedures and service conditions may cause these castings to become subject to stress-corrosion cracking. Where stress-corrosion may be a factor in service@ precipitation heat treatment should be performed at a temperature not lower than 1000 ??(540 ??.