ISO 683-15:1992

Heat-treatable steels, alloy steels and free-cutting steels — Part 15: Valve steels for internal combustion engines

Gives the requirements of delivery for certain grades of wrought high-alloy materials used for intake and exhaust valves in reciprocating internal combustion engines. Is applicable to bars, wire, wire rod and forgings. In addition, the general technical delivery requirements of ISO 404 are applicable. Annex A “Technical Supplement” gives requirements for property values as the result of processing after delivery.