NA 145
DIN Standards Committee Technology of Materials
NA 145-01-04 AA
Sampling and testing methods for hardmetals
This committee is responsible for the standardization, among other things, of methods for the determination of transverse rupture strength and hardness test, metallographic determination of the microstructure of hardmetal sample like the porosity, the average grain size, eta phases, and other artefacts and methods for the chemical analysis.