DIN ISO 4491:1987-08

Отменен

Metallic powders; determination of loss of mass on hydrogen reduction (hydrogen loss); identical with ISO 4491, edition 1978 — 5 стр.

Заменен на

DIN ISO 4491-2:1990-06

ICS

77.160 Powder. Including sintered metal materials and hardmetals / Порошковая металлургия