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ASTM A789/A789M-09
Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
5 стр.
Заменен
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96.72 $ (включая НДС 20%)
Разработчик:
Зарубежные/ASTM
ICS:
23.040.40 Metal fittings / Металлические фитинги
Сборник (ASTM):
01.01 Steel--Piping, Tubing, Fittings / Сталь - Система трубопроводов, Трубы, Фитинги
Тематика:
Steel--Structural, Tubes, Plate, Coated
Описание
Реферат

This specification covers standard requirements for grades of nominal wall thickness, stainless steel tubing for services requiring general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures. Heat and product analyses shall be performed wherein the steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, nitrogen, copper, and others. All tubes shall be furnished in the heat-treated condition in accordance with the specified temperature and quench conditions. When the final heat treatment is in a continuous furnace, or when heat treated condition is obtained directly by quenching after hot forming, the number of tubes of the same size and from the same heat in a lot shall be determined from the prescribed sizes of the tubes. The material shall conform to the prescribed tensile and hardness properties. Mechanical tests such as tension test, flaring test (for seamless tubes), flange test (for welded tubes), hardness test, and reverse flattening test shall be performed on the steel tubing. Each tube shall also be subjected to the nondestructive electric test or the hydrostatic test.

Область применения

1.1 This specification covers grades of nominal wall thickness, stainless steel tubing for services requiring general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures.

1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. Within the text, the SI units are shown in brackets. The inch-pound units shall apply unless the M designation of this specification is specified in the order.

Ключевые слова:
duplex stainless steel; ferritic/austenitic stainless steel; seamless steel tube; stainless steel tube; steel tube; welded steel tube; Austenitic stainless steel tube--specifications; Corrosion-resistant steel--specifications; Corrosive service applications--tube (steel); Duplex stainless steel--specifications; Ferritic steel tube--specifications; Seamless steel tube--specifications; Stainless steel tube--specifications; Structural steel (SS) tube--specifications; Welded steel tube--specifications