Järn och stål

Ämnesområden: Järn och stål: allmänt
Kommittébeteckning: SIS/TK 122 (Kemiska analysmetoder för metaller)
Källa: CEN
Svarsdatum: den 19 apr 2019
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This International Standard specifies a gravimetric method for the determination of the silicon content in steels and cast irons.

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 precise than for unalloyed steels.

Kommittébeteckning: SIS/TK 130 (Gjutet järn och stål)
Källa: CEN
Svarsdatum: den 5 maj 2019
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This part of ISO 945 specifies a method of classifying the microstructure of graphite in cast irons by comparative visual analysis.

The purpose of this part of ISO 945 is to provide information about the method of graphite classification. It is not intended to give information on the suitability of cast-iron types and grades for any particular application.

The particular material grades are specified mainly by mechanical properties and, in the case of austenitic and abrasion resistant cast irons, by their chemical composition. The interpretation of graphite form and size does not allow a statistically valid statement on the fulfilment of the requirements specified in the relevant material standard.

Ämnesområden: Verktygsstål
Kommittébeteckning: SIS/TK 120 (Allmänna leveransbestämmelser för metall)
Källa: ISO
Svarsdatum: den 20 maj 2019
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This international standard provides guidance on the classification of the grades of steel included in the product standards of and addressed by TC17 and it subcommittees. These grades may include but are not limited to non-alloy and alloy steels.

NOTE 1 This standard does not intend to give any commercial information including tariff, residual elements specification, and academic definitions for educational purposes.

NOTE 2 The terms, special and quality steels are nowadays outdated. Nevertheless, they are used in standards and the market. And therefore they can be found in Annex A.