Hardness is the property of a material that enables it to resist plastic deformation, usually by permanent indentation. Indentation hardness measures the resistance of a sample to material deformation due to a constant compression load from a sharp object; they are primarily used in engineering and metallurgy fields. The tests work on the basic premise of measuring the critical dimensions of an indentation left by a specifically dimensioned and loaded indenter. : Hardness Test Methods: : 1.Rockwell Hardness Test : 2.Rockwell Superficial Hardness Test : 3.Brinell Hardness Test : 4.Vickers Hardness Test : 5.Micro Hardness Test
This digital double Rockwell hardness tester is equipped with a newly-designed large displaying screen with good reliability, excellent operation and easy watching, thus it is a high-tech product combining the mechanic and electric features. It can show and set the présent scale, test force, test indenter, dwell time and hardness conversion; the main function is as follows: Sélection of ail the Rockwell and superficial Rockwell scales; Conversion scales of different kinds of hardness; Test results can be saved and printed out, automatic calculation of maximum, minimum and average value; With RS232 interface for connecting to the computer. It is suitable for quenched Steel, tempered Steel, annealed Steel, cold and hard casting, malléable cast iron, hard alloy Steel, aluminum alloy, copper alloy, bearing Steel etc. Also suitable for surface quenched Steel, surface heat treating and Chemical treating materials, sheet, zinc layers, chrome layers, tin layers etc.