ASTM B578
ASTM B578 – Standard Test Method for Microindentation Hardness of Electroplated Coatings Description: Abstract This test method specifies the determination of the microhardness of metallic coatings upon various substrates (electroplated coatings). Measurements shall be made with the Knoop indenter under specified test loads, and the hardness shall be reported as a Knoop hardness number (HK). …