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ISO 4158:1978

Ferrosilicon, ferrosilicomanganese and ferrosilicochromium — Determination of silicon content — Gravimetric method ISO 4158:1978

Publication date:   Dec 1, 1978

General information

90.60   Close of review   Dec 3, 2025

ISO

ISO/TC 132 Ferroalloys

International Standard

77.100   Ferroalloys

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Published

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Scope

The method is applicable to alloys containing from 8 to 95 % (m/m) silicon. Specifies principle, reagents, apparatus, sample, procedure, expression of results, reproducibility and test report. Warns of perchloric acid fumes.

Life cycle

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PUBLISHED
ISO 4158:1978
90.60 Close of review
Dec 3, 2025




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