KS D ISO 4498-2-2011 Sintered metal materials, excluding hardmetals-Determination of apparent hardness-Part 2:Case-hardened ferrous materials, surface enriched by carbon or carbon and nitrogen
2011KS D ISO 4498-2-2011 Sintered metal materials, excluding hardmetals-Determination of apparent hardness-Part 2:Case-hardened ferrous materials, surface enriched by carbon or carbon and nitrogen