ASTM A389/A389M-24

Podrobné informace

Označení: ASTM A389/A389M-24

Datum vydání: 15.11.2024

Stran: 3

Země: Americká technická norma

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Anotace

This guide specifies standard specification for alloy steel castings, which have been subjected to special heat treatment, for valves, flanges, fittings, and other pressure-containing parts intended primarily for high-temperature service. All castings shall receive a heat treatment proper to their design and chemical composition. Heat treatment shall be performed before machining except in instances when reheat treating is necessary. The steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, and vanadium. Steel used for the castings shall conform to the required tensile properties such as tensile strength, yield strength, and elongation. When methods involving high temperature are used in the removal of discontinuities, casting shall be preheated to at least the minimum temperatures.


Keywords:
alloy steel, high-temperature applications, pressure-containing parts, steel castings,, ICS Number Code 77.140.80 (Iron and steel castings)