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Norma ASTM A356/A356M-21 1.5.2021 náhled

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ASTM A356/A356M-21

Standard Specification for Steel Castings, Carbon, Low Alloy, and Stainless Steel, Heavy-Walled for Steam Turbines

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NORMA vydána dne 1.5.2021

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Informace o normě:

Označení normy: ASTM A356/A356M-21
Datum vydání normy: 1.5.2021
Kód zboží: NS-1024034
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Železné a ocelové odlitky

Anotace textu normy ASTM A356/A356M-21 :

This specification covers one grade of martensitic stainless steel and several grades of ferritic steel castings for cylindrical (shells), valve chests, throttle valves, and other heavy-walled castings for steam turbine applications. The steel shall be made by the open-hearth or electric-furnace process. Deoxidation of the carbon and low-alloy steel grades shall be by manganese and silicon. The castings shall be heat treated in either the normalized, tempered, or stress-relieved conditions. Mechanical properties such as tensile strength, yield strength, and elongation shall be determined by subjecting the specimens to a tension test.

Keywords:

carbon steel, low-alloy steel, stainless steel, steam turbines, steel castings,, ICS Number Code 77.140.80 (Iron and steel castings)

Doplňující informace

1. Scope

1.1?This specification covers one grade of martensitic stainless steel and several grades of ferritic steel castings for cylinders (shells), valve chests, throttle valves, and other heavy-walled castings for steam turbine applications.

1.2?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.

1.2.1?Within the text, the SI units are shown in brackets.

1.3?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.

2. Referenced Documents

A488/A488M-18e2	Standard Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel (Includes all amendments and changes 2/12/2020).
E709-21	Standard Guide for Magnetic Particle Testing
E125-63(2023)	Standard Reference Photographs for Magnetic Particle Indications on Ferrous Castings
E446-20	Standard Reference Radiographs for Steel Castings Up to 2 in. (50.8 mm) in Thickness
E280-21	Standard Reference Radiographs for Heavy-Walled (412 to 12 in. (114 to 305 mm)) Steel Castings
E186-20	Standard Reference Radiographs for Heavy-Walled (2 to 412 in. (50.8 to 114 mm)) Steel Castings
E165-09	Standard Practice for Liquid Penetrant Examination for General Industry
A370-23	Standard Test Methods and Definitions for Mechanical Testing of Steel Products
E94-04	Standard Guide for Radiographic Examination

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