ISO 4970:1979

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

Publication date:   Nov 1, 1979

95.99 Withdrawal of Standard   Dec 5, 2016

General information

95.99 Withdrawal of Standard   Dec 5, 2016

ISO

ISO/TC 17/SC 7 Methods of testing (other than mechanical tests and chemical analysis)

International Standard

77.040.99   Other methods of testing of metals

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Scope

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.

Life cycle

NOW

WITHDRAWN
ISO 4970:1979
95.99 Withdrawal of Standard
Dec 5, 2016

REVISED BY

PUBLISHED
ISO 18203:2016