[国外标准] SAE J417-1983 HARDNESS TESTS AND HARDNESS NUMBER CONVERSIONS
[国外标准] SAE J379-1996 GOGAN HARDNESS OF BRAKE LINING
[国外标准] BS EN 1043-1-1996 Hardness test on wleds metal
[国外标准] JIS B7736-1999 Brinell hardness test-Calibration of reference blocks
[国外标准] JIS B7735-1997 Vickers hardness test-Calibration of the reference blocks
[国外标准] JIS B7731-2000 Shore hardness test-Calibration of reference blocks
[国外标准] JIS B7730-1997 Rockwell hardness test-Calibration of reference blocks
[国外标准] JIS B7727-2000 Shore hardness test-Verification of testing machines
[国外标准] JIS B7726-1997 Rockwell hardness test-Verification of testing machines
[国外标准] JIS B7725-1997 Vickers hardness test-Verification of testing machines
[国外标准] JIS B7724-1999 Brinell hardness test-Verification of testing machines
[国外标准] JIS Z 2251：2009 Knoop hardness test Test method
[国外标准] JIS Z 2243：2008 Brinell hardness test -- Test method