1. Powder Metallurgy Standards for Hardmetals;Roebuck,2014
2. Hardmetals – Rockwell hardness test (scale A) – part 1: test method;ISO 3738-1,1982
3. Hardmetals – Vickers hardness test;ISO 3878,1983
4. NIST Recommended Practice Guide;Rockwell Hardness Measurement of Metallic Materials,2001
5. Interlaboratory exercise – high hardness Rockwell/Vickers test method comparison;Bennett;NPL Rep. MAT,2016