NF A95-348*NF EN ISO 4507:2007 Sintered ferrous materials, carburized or carbonitrided - Determination and verification of case-hardening depth by a micro-hardness test
2007NF A95-348*NF EN ISO 4507:2007 Sintered ferrous materials, carburized or carbonitrided - Determination and verification of case-hardening depth by a micro-hardness test