This standard specifies the hardness determination method of sintered metal materials (excluding cemented carbide). Method 1 is used to determine the apparent hardness of the entire material. Method 1 -- Applicable to sintered metal materials without heat treatment or after heat treatment, the layer depth of at least 5 mm below the surface has basically uniform hardness; -- Applicable to sintered sintered materials with uneven hardness within 5 mm below the surface The surface of metal materials; --Applicable to materials that obtain hardness through carburizing, carbonitriding, nitrocarburizing or vulcanization; --Applicable to induction hardening materials. Method 2 is used to determine the microhardness of the metallic phase. Method 2 -- Applicable to all types of sintered metal materials; -- Especially suitable for determining the hardness distribution curve of surface hardened or carbonitrided materials, consistent with the method described in ISO 4507; -- Also applicable to electroplating, chemical Sintered metal materials with surface treatment such as coating, chemical vapor deposition (CVD), physical vapor deposition (PVD), laser, ion bombardment, etc. Method 2 is suitable for determining the microhardness of the treated surface.
GB/T 9095-2008 Sintered ferrous materials,carburized or carbonitrided-Determination and verification of case-harding depth
ISO 4516 Metallic and other inorganic coatings - Vickers and Knoop microhardness tests
GB/T 9097-2016 history
2016GB/T 9097-2016 Sintered metal materials, excluding hardmetals.Determination of apparent hardness and mincrohardness
2002GB/T 9097.1-2002 Sintered metal materials,excluding hardmetals--Determination of apparent hardness Part 1: Materials of essentially uniform section hardness