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ASTM A540/A540M-24
Standard Specification for Alloy-Steel Bolting for Special Applications
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STANDARD published on 1.3.2024
The information about the standard:
Designation standards: ASTM A540/A540M-24
Publication date standards: 1.3.2024
SKU: NS-1171225
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: American technical standard
Category: Technical standards ASTM
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Annotation of standard text ASTM A540/A540M-24 :
This specification covers a group of common requirements that shall apply to steel flanges, forged fittings, valves, and parts for piping applications under any of the following individual product specifications. This specification covers regular and special-quality alloy steel bolting materials which may be used for nuclear and other special applications. Bolting materials as used in this specification cover rolled or forged bars, rotary pierced or extruded seamless tubes, bored bars, or forged hollows from forged or rolled bar segments to be manufactured into bolts, studs, washers, and nuts. The steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel, molybdenum, vanadium. Material which is ordered in the liquid-quenched and tempered condition shall be uniformly reheated from a temperature below the cooling transformation range to the proper austenitizing temperature. It shall be quenched in a liquid medium under substantially uniform conditions and then uniformly reheated for tempering. Tensile test, hardness, and impact test shall be measured to conform to the required mechanical properties.
Keywords:
bolts—steel, chromium-molybdenum alloy steel, chromium-molybdenum-vanadium alloy steel, chromium-nickel-molybdenum-vanadium alloy steel, bolting components—steel, nickel-chromium-molybdenum alloy steel, nuclear applications, nuts—steel, steel bars—alloy, steel bolting material,, ICS Number Code 21.060.01 (Fasteners in general)
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