Hardmetals - Rockwell hardness test (scale A) - Part 2: Preparation and calibration of standard test blocks (ISO 3738-2:1988); German version EN ISO 3738-2:2006— 11 стр.
Hardmetals - Metallographic determination of microstructure - Part 2: Measurement of WC grain size (ISO 4499-2:2008); German version EN ISO 4499-2:2010— 25 стр.