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ASTM A249/A249M-24a
Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes (Includes all amendments and changes 5/22/2024).
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STANDARD published on 1.5.2024
The information about the standard:
Designation standards: ASTM A249/A249M-24a
Publication date standards: 1.5.2024
SKU: NS-1184405
The number of pages: 11
Approximate weight : 33 g (0.07 lbs)
Country: American technical standard
Category: Technical standards ASTM
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Annotation of standard text ASTM A249/A249M-24a :
This guide specifies standard specification for nominal-wall-thickness welded tubes and heavily cold worked welded tubes made from the austenitic steels with various grades intended for such use as a boiler, superheater, heat exchanger, or condenser tubes. Heat and product analysis shall conform to the requirements as to chemical composition for carbon, manganese, phosphorous, sulfur, silicon, chromium, nickel, molybdenum, nitrogen, copper, and others. All materials shall be furnished in the heat-treated condition in accordance with the required solution temperature and quenching method. When the final heat treatment is in a continuous furnace, the number of tubes of the same size and from the same heat in a lot shall be determined from the prescribed size of the tubes. The material shall conform to the prescribed tensile and hardness properties such as tensile strength, yield strength, elongation, and Rockwell hardness number. The steel shall undergo mechanical tests such as tension test, flattening test, flange test, reverse-bend test, hardness test, and hydrostatic or nondestructive electric test. The grain size of different grades of steel shall be determined in accordance with the test methods.
Keywords:
austenitic stainless steel, boiler tubes, condenser tube, heat exchanger tube, high temperature applications, N08800, N08810, N08811, steel tube, superheater tubes, temperature service applications, high, welded steel tube and heavily cold worked (HCW) tubes,, ICS Number Code 23.040.10 (Iron and steel pipes)
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