This standard specifies the terms and definitions,test apparatus,test requirements,test procedures,and test report of the test method for glass hardness and scratch resistance of high speed multiple unit.
This standard is applicable to the test of glass hardness and scratch resistance of high-speed multiple units with design speed not less than 200 km/h.The other types of glass hardness and scratch resistance may refer to this standard.
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This standard specifies the principle,equipment,test pieces,test conditions,test procedures,validation of test results and test report for the determination of elastic modulus,tensile strength,hardness and stress-strain curve of metallic materials based on the indentation method.
This standard is applicable to thedetermination of the elastic modulus,tensile strength,Rockwell hardness and stress-strain curve in the stage of uniform deformation of metallic materials that are homogeneous,isotropic and following power-law strain hardening.It is also applicable to the conversion between the tensile strength and hardness,as well as the conversion between values of Brinell hardness,Rockwell hardness and Vickers hardness.
NOTE When used to determine the stress-strain curve of a metallic material which shows obvious yielding platform or linear strain hardening,significant errors may be found in the obtained results.
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