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ASTM A744/A744M-21a
Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service (Includes all amendments and changes 11/10/2021).
NORMA vydaná dňa 1.11.2021
Informácie o norme:
Označenie normy: ASTM A744/A744M-21a
Dátum vydania normy: 1.11.2021
Kód tovaru: NS-1041937
Počet strán: 6
Približná hmotnosť: 18 g (0.04 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM A744/A744M-21a :
This specification covers standard requirements for iron-chromium-nickel alloy, stainless steel castings intended for particularly severe corrosive applications. Alloys shall be melted by the electric furnace process with or without refining such as argon-oxygen-decarburization. Castings shall be heat treated and shall conform to the required heat treatment conditions. The materials shall conform with the prescribed chemical requirements for carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, columbium, copper, selenium, tungsten, vanadium, iron, and nitrogen.
Keywords:
austenitic stainless steel, corrosion, stainless steel, steel castings,, ICS Number Code 77.140.80 (Iron and steel castings)
Doplňujúce informácie
| 1. Scope | ||||||||||||||||||||||
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1.1?This specification covers iron-chromium-nickel alloy stainless steel castings intended for particularly severe corrosive applications. 1.2?This specification requires post-weld heat treatment of all weld repairs affecting surfaces intended to be wetted by the corrosive medium. For applications for which post-weld heat treatment is not considered mandatory for retention of acceptable corrosion resistance, refer to Specification A743/A743M. Note 1:?For general corrosion-resistant alloy castings,
reference should be made to Specification A743/A743M. For general heat-resistant
alloy castings, reference should be made to Specification
A297/A297M. For nickel-base
alloy castings, refer to Specification A494/A494M.
1.3?The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.3.1?Within the text, the SI units are shown in brackets. 1.3.2?Inch-pound units are applicable for material ordered to Specification A744 and SI units for material ordered to Specification A744M. 1.4?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||||||||||||||||||||||
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