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Heat-treated steels, alloy steels and free-cutting steels — Part 15: Valve steels for internal combustion eng…

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

Overview ISO 683-15:1992 specifies delivery requirements for valve steels for internal combustion engines. It covers wrought high‑alloy materials used for intake and exhaust valves, applicable to bar…