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ISO/DIS 9441

Steel — Determination of niobium content — PAR spectrophotometric method

General information

40.60     Jan 14, 2026

ISO

ISO/TC 17/SC 1

International Standard

77.080.20  

Scope

The method is applicable to types of steel with niobium contents between 0,005 % (m/m) and 1,3 % (m/m). Specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report. Annex A includes additional information on the international co-operative tests. Annex B gives a graphical representation of precision data.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 9441:1988

NOW

IN_DEVELOPMENT
ISO/DIS 9441
40.60 Close of voting
Jan 14, 2026