+91 80984 42953 hello@sascert.in
Verify a certificate ISO standards library Download brochure
ISO 18203:2016Withdrawn

Steel — Determination of the thickness of surface-hardened layers

Acier — Détermination de l'épaisseur des couches durcies superficielles

This edition has been replaced by ISO 18203:2026.

Abstract / scope

ISO 18203:2016 specifies a method of measuring the case hardening depth, surface hardening depth, nitriding hardness depth and total thickness of surface hardening depth obtained, e.g. thermal (flame and induction hardening, electron beam hardening, laser beam hardening, etc.) or thermochemical (carbonitriding, carburizing and hardening, hardening and nitriding, etc.) treatment.

Life cycle

Replaces

ISO 3754:1976WithdrawnSteel — Determination of effective depth of hardening after flame or induction hardeningInternational Standard · Published 1 Jun 1976 · ISO/TC 17/SC 7ISO 4970:1979WithdrawnSteel — Determination of total or effective thickness of thin surface-hardened layersInternational Standard · Published 1 Nov 1979 · ISO/TC 17/SC 7ISO 2639:2002WithdrawnSteels — Determination and verification of the depth of carburized and hardened casesInternational Standard · Published 5 Nov 2002 · ISO/TC 17/SC 7

Replaced by

ISO 18203:2026PublishedSteel — Determination of the thickness of surface-hardened layersInternational Standard · Published 27 Jan 2026 · ISO/TC 17/SC 7