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ISO 4140:1979

Ferrochromium and ferrosilicochromium — Determination of chromium content — Potentiometric method

Publication date:   Sep 1, 1979

General information

90.93 Standard confirmed   Mar 25, 2022

ISO

ISO/TC 132 Ferroalloys

International Standard

77.100   Ferroalloys

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Scope

The method is applicable to all grades of these ferroalloys. Specifies principle, reagents, apparatus, sample, procedure, expression of results and test report.

Life cycle

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PUBLISHED
ISO 4140:1979
90.93 Standard confirmed
Mar 25, 2022