NA 021

DIN Standards Committee Iron and Steel

ISO/TC 17/SC 4
Heat treatable and alloy steels

Standardization of qualities, dimensions and tolerances of heat treatable and alloy steels used mainly in the engineering and automotive industry in either the non-heat treated or the heat treated conditions. Examples are free-cutting, bright, stainless, heat-resisting, tool, spring, valve and roller bearing steels including tubular products for these applications, but not those covered by ISO/TC 5.

National mirror committee of ISO/TC 17/SC 4

Committee ID Name
NA 021-00-05-01 UA Non-alloy and alloy mechanical engineering steels