This specification covers two types of free-machining, corrosion and moderate heat resistant steel in the form of bars, wire, forgings, and forging stock.These products have been used typically for parts requiring hardness up to 35 HRC on which the amount of machining warrants use of a free-machining grade of steel with oxidation resistance up to 1000 mDF (538 mDC), but usage is not limited to such applications. The product is useful at the higher temperatures only when stresses are low.