Hardness tester LK110A 1,Measuring scope:(170-960) HLD; 2,Hardness formats: ... ,HB, HRB, HRC,HRA,HV,HS; 3, Direct Thermal Hardness tester LK110AFeatures: Based on HL hardness measuring principle, can detect various ... : steel and cast steel, alloy tool steel, stainless steel, gray iron, ductile iron, cast aluminum alloy, copper-zinc alloy (brass), copper-tin ...