ISO 439:2020
Steel and cast iron — Determination of silicon content — Gravimetric method

Standard No.

ISO 439:2020

Release Date

2020

Published By

International Organization for Standardization (ISO)

Latest

ISO 439:2020

Scope

This document specifies a gravimetric method for the determination of the silicon content in steel and cast iron. The method is applicable to silicon contents between 0,10 % (mass fraction) and 5,0 % {mass fraction). NOTE For samples containing molybdenum, niobium, tantalum, titanium, tungsten, zirconium or high levels of chromium, the results are less accurate than for unalloyed matrixes.

ISO 439:2020 Referenced Document

• ISO 14284 Steel and iron — Sampling and preparation of samples for the determination of chemical composition*， 2022-10-25 Update
• ISO 3696 Water for analytical laboratory use; Specification and test methods

ISO 439:2020 history

• 2020 ISO 439:2020 Steel and cast iron — Determination of silicon content — Gravimetric method
• 1994 ISO 439:1994 Steel and iron; determination of total silicon content; gravimetric method
• 1982 ISO 439:1982 Steel and cast iron; Determination of total silicon; Gravimetric method