BS 4175-2:1970
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Method for Rockwell superficial hardness test (N and T scales) Verification of the testing machine
Hardcopy , PDF
23-07-2013
English
27-02-1970
Direct and indirect verification, routine checks. Calibration of standard superficial hardness blocks used for indirect verification, and requirements for standardizing machines.
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