BS EN ISO 18203:2026

This standard BS EN ISO 18203:2026 Steel — Determination of the thickness of surface-hardened layers is classified in these ICS categories:

• 77.040.99 Other methods of testing of metals

This document specifies a method of measuring the case hardening depth, surface hardening depth, nitriding hardness depth and total thickness of surface hardening depth obtained using, 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.