标准硬质合金洛氏(A标尺)硬度块检定规程
Verification regulation of standard hardmetals rockwell (A scale) hardness test block
1997-06-26
BS EN ISO 3738-2-2006
Hardmetals. Rockwell hardness test (scale A)-Preparation and calibration of standard test blocks
硬质合金 洛氏硬度试验（A标度） 标准试块的制备和校准
2006-04-28
GB/T 3849.2-2010
硬质合金 洛氏硬度试验（A标尺） 第2部分：标准试块的制备和校准
Hardmetals - Rockwell hardness test (scale A) - Part 2: Preparation and calibration of standard test blocks
2011-01-14
ISO 3738-2-1988
Hardmetals — Rockwell hardness test (scale A) — Part 2: Preparation and calibration of standard test blocks
硬质合金与粉煤灰；洛氏硬度试验（A标尺）第2部分:标准试块的制备和校准
1988-12-29
DIN 30999
Calibration of hardmetal standard test blocks for verifying and calibrating Rockwell hardness testing machines (scales A and 45N)
硬质合金.洛氏试验（标尺A和45N）.硬度试验机验证和校准用硬质合金标准块的校准
1999-12-01
UNE-EN ISO 3738-2-2007
Hardmetals - Rockwell hardness test (scale A) - Part 2: Preparation and calibration of standard test blocks (ISO 3738-2:1988)
硬质合金洛氏硬度试验（A标尺）第2部分:标准试块的制备和校准
2007-01-03
DIN EN ISO 3738-2
Hardmetals - Rockwell hardness test (scale A) - Part 2: Preparation and calibration of standard test blocks (ISO 3738-2:1988)
硬质合金洛氏硬度试验（A标尺）第2部分:标准试块的制备和校准；德文版EN ISO 3738-2:2006