1. Scope

1.1 This specification covers ferritic steel forgings for boilers, pressure vessels, high-temperature parts, and associated equipment.

1.2 Forgings made of steel grades listed in Specification A 335/A 335M, may also be ordered under this specification. The chemical, tensile, heat treatment, and marking requirements of Specification A 335/A 335M shall apply, except the forging shall conform to the chemical requirements of Tables 1 and 2 of Specification A 335/A 335M only with respect to heat analysis. On check analysis they may deviate from these limits to the extent permitted in of this specification.

1.3 Supplementary Requirements S1 to S9 are provided for use when additional testing or inspection is desired. These shall apply only when specified individually by the purchaser in the order.

1.4 Unless the order specifies the applicable 'M' specification designation, the material shall be furnished to the inch-pound units.

1.5 Specification A 336/A 336M formerly included austenitic steel forgings, which are now found in A 965/A 965M.

1.6 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standards. Within the text and tables, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independent of the other. Combining values from the two systems may result in nonconformance with the specification.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

A275/A275M Practice for Magnetic Particle Examination of Steel Forgings

A335/A335M Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service

A370 Test Methods and Definitions for Mechanical Testing of Steel Products

A788/A788M Specification for Steel Forgings, General Requirements

A965/A965M Specification for Steel Forgings, Austenitic, for Pressure and High Temperature Parts

E165 Practice for Liquid Penetrant Examination for General Industry

ASME Boiler and Pressure Vessel Code

AWS Specifications

Keywords

chromium alloy steel; chromium-molybdenum steel; martensitic stainless steel; pressure containing parts; pressure vessel service; steel forgings alloy; temperature service applications high; High-temperature service applications--steel forgings; Pressure-containing parts; Pressure vessel steel forgings--specifications; Seamless drums/heads; Stainless steel forgings--specifications; Steel forgings--specifications; Superheater tubes--specifications; Austenitic stainless steel forgings--specifications; Alloy steel forgings--specifications; Boiler/superheater tubes--specifications; Chromium alloy steel--specifications; Chromium-molybdenum steel--specifications; Ferritic steel forgings--specifications;

ICS Code

ICS Number Code 77.140.85 (Iron and steel forgings)

DOI: 10.1520/A0336_A0336M-06

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