
Sintered metal materials, excluding hardmetals - Determination of apparent hardness Part 2: Case-hardened ferrous materials, surface enriched by carbon or carbon and nitrogen
出版:International Organization for Standardization

專家解讀視頻
NFA 95 321-2:1988 - Equivalent
BS 5600-3.11.2:1984 - Similar
PN ISO 4498-2:2000 - Identical