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ISO 4945:2018

Steel — Determination of nitrogen — Spectrophotometric method ISO 4945:2018

Publication date:   Oct 16, 2018

General information

90.93 Standard confirmed   May 2, 2024

ISO

ISO/TC 17/SC 1 Methods of determination of chemical composition

International Standard

77.080.20   Steels

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Scope

This document specifies a spectrophotometric method for the determination of nitrogen in steel.
The method is applicable to the determination of nitrogen mass fraction between 0,000 6 % and 0,050 % in low alloy steels and between 0,010 % and 0,050 % in high alloy steels.
The method does not apply to samples containing silicon nitrides or having silicon contents higher than 0,6 %.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 4945:1977

NOW

PUBLISHED
ISO 4945:2018
90.93 Standard confirmed
May 2, 2024