DIN EN ISO 4499-4:2016 Hardmetals - Metallographic determination of microstructure - Part 4: Characterisation of porosity, carbon defects and eta-phase content (ISO 4499-4:2016); German version EN ISO 4499-4:2016 has been changed from DIN ISO 4505:1991 Hardmetals; metallographic determination of porosity and uncombined carbon; identical with ISO 4505:1978.
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