1.1 This International Standard specifies methods of hardness testing of sintered metal materials, excluding hardmetals.1.2 Procedure 1 determines the apparent hardness of the whole material.Procedure 1. applies to sintered metal materials which have either not been subjected to any heat treatment, or which have been heat treated in such a way that the hardness is essentially uniform to a depth of at least 5 mm below the surface,. applies to the surfaces of sintered metal materials which have been treated in such a way that thehardness is not uniform in the section to a depth of 5 mm below the surface,. therefore applies to materials in which the hardness i
DS/EN ISO 4498:2010 history
2010DS/EN ISO 4498:2010 Sintered metal materials, excluding hardmetals - Determination of apparent hardness and microhardness