ISO 640:1984被替代
Metallic Materials - Hardness Test - Calibration Of Standardized Blocks To Be Used For Vickers Hardness Testing Machines
出版：International Organization for Standardization
专家解读视频
1984
DIN 51303 : 1995 - Similar to
DIN EN ISO 6507-3 : 2016 - Corresponds
UNE 7423-4 : 88 ERRATUM - Similar to
SN EN ISO 6507-3:2006 - Identical
DIN EN ISO 6507-3 (2006-03) - Identical
DIN 51303 (1995-01) - Similar
NFA 03 507:1983 - Equivalent
UNE 7423-4:1988 - Similar
