ASTM A757/A757M-22

Standard Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing and Other Applications, for Low-Temperature Service



NORMA vydaná dňa 1.11.2022


Jazyk
Prevedenie
DostupnosťSKLADOM
Cena66.40 bez DPH
66.40

Informácie o norme:

Označenie normy: ASTM A757/A757M-22
Dátum vydania normy: 1.11.2022
Kód tovaru: NS-1091343
Počet strán: 9
Približná hmotnosť: 27 g (0.06 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM

Kategórie - podobné normy:

Železné a ocelové odlitky

Anotácia textu normy ASTM A757/A757M-22 :

This specification covers carbon and alloy steel castings for pressure-containing and other applications intended primarily for petroleum and gas pipelines in areas subject to low-ambient temperatures. Castings shall be heat treated by normalizing and tempering or liquid quenching and tempering. The steel shall be made by the electric furnace process or other primary processes. Heat and product analyses shall be performed on the material and the chemical composition shall conform to the prescribed values for carbon, manganese, nickel, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, also for residual elements like vanadium, copper, nickel, chromium, molybdenum, and tungsten. Tensile test shall be made and the mechanical properties thus determined shall conform to the required tensile strength, yield strength, elongation, and reduction of area. Charpy V-notch testing shall be done to determine the impact properties on each heat by specimen type like coupons representing the weld deposits and coupons representing the heat-affected zone. Impact properties shall also be determined on both the heat-affected zone of the base metal and the weld metal of the welding procedure qualification test. After machining, each pressure-containing casting shall undergo hydrostatic pressure testing and shall not leak.

Keywords:

alloy steel, carbon steel, ferritic, investment castings, low temperature service, martensitic stainless steel, pressure containing, stainless steel, steel castings,, ICS Number Code 77.140.80 (Iron and steel castings)

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