ISO-4970 › Steel - Determination of total or effective thickness of thin surface-hardened layers
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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.
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Document Number
ISO 4970:1979
Revision Level
1ST EDITION
Status
Superseded
Publication Date
Nov. 1, 1979
Committee Number
ISO TC 17/SC 7