ISO 4970:1979
ISO 4970:1979


Specifies the micrographic method and the microhardness measurement method. Applies to thin surface layers, with thicknesses of less than or equal to 0.3 mm, obtained, for example, by mechanical (shot blasting, shot peening, etc), thermal (flame or induction hardening, etc) or thermochemical (carbonitriding, carburizing and hardening, etc) treatment. It is not applicable to thin surface layer which are not continuous with the basis metal.

General information 

  •  :  Withdrawn
     : 1979-11
  •  : 1
     : 4
  •  : ISO/TC 17/SC 7 Methods of testing (other than mechanical tests and chemical analysis)
  •  :
    77.040.99 Other methods of testing of metals

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