ISO 683-15:1992

Действует

Heat- treatable steels, alloy steels and free-cutting steels. Part 15. Valve steels for internal combustion engines — 20 стр.

ICS

77.140.10 Heat-treatable steels / Термообрабатываемые стали

27.020 Internal combustion engines / Двигатели внутреннего сгорания

77.140.20 Stainless. Including alloyed steels, corrosion-resistant steels, heat-resisting steels, etc. / Высококачественные стали