Q: How to define the 301 stainless steel tape?
A: 1/2H-3/4H-H-EH is the Japanese standard JIS G4313 Cold Rolled spring steel quenched and tempered steel with the standard provisions of hardening, such as cold hardening 1/2H hardness of 301 HV over 310, The HV over 370 or more 3/4H, H means hardness over 430, EH means over 490.
Vickers hardness (HV):
Vickers indentation hardness test is a test method, which to puts a relative angle between surface 136 of a rectangular pyramidal diamond indenter with the selected test force to beat into the surface, drop test force after keeping required time, measure Indentation diagonal length of both. |
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