ISO-4970 Steel - Determination of total or effective thickness of thin surface-hardened layers

ISO-4970 - 1ST EDITION - SUPERSEDED
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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Superseded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