ISO 4498-1:1978 Sintered metal materials, excluding hardmetals — Determination of apparent hardness — Part 1: Materials of essentially uniform section hardness
1990ISO 4498-1:1990 Sintered metal materials, excluding hardmetals; determination of apparent hardness; part 1: materials of essentially uniform section hardness
1978ISO 4498-1:1978 Sintered metal materials, excluding hardmetals — Determination of apparent hardness — Part 1: Materials of essentially uniform section hardness