ASTM-A453 › Historical Revision Information
Standard Specification for High-Temperature Bolting Materials, with Expansion Coefficients Comparable to Austenitic Stainless Steels
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This specification covers standards for Grade 660 (Class A, B, C, and D) , Grade 651 (Class A and B), Grade 662 (Class A and B), and Grade 665 (Class A and B) of bolting materials for use in high-temperature service such as fasteners, for pressure vessels and valve flanges. Bolting materials in this specification covers rolled, forged, or hot-extruded bars, and also bolts, nuts, screws, washers, studs, and stud bolts. Materials shall adhere to specified contents of carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, tungsten, titanium, columbium, aluminum, vanadium, boron, and copper. Materials shall be subjected to tension, stress-rupture, and hardness tests. Materials shall conform to yield strength, tensile strength, elongation, reduction of area, Brinell hardness, and Rockwell hardness requirements. Hardening and solution treatment requirements for each material class are also given.
Scope
1.1 This specification covers four grades of bolting materials with ten classes of yield strength ranging from 50 to 120 ksi [345 to 827 MPa] for use in high-temperature service such as fasteners for pressure vessel and valve flanges. The material requires special processing and is not intended for general purpose applications. The term "bolting material," as used in this specification, covers rolled, forged, or hot-extruded bars; bolts, nuts, screws, washers, studs, and stud bolts. Headed bolts and rolled threads may be supplied.
Note 1—Other bolting materials are covered by Specification A 193/A 193M and Specification A 437/A 437M.
1.2 Supplementary Requirement S 1 of an optional nature is provided. This shall apply only when specified by the purchaser in the order.
1.3 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable "M" specification designation (SI units), the material shall be furnished to inch-pound units.
1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. 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.
Keywords
bolts-steel; fasteners-steel; marking; nuts-steel; precipitation hardening steels; pressure vessel service; revision letter; steel bars-alloy; steel bolting material; steel flanges; steel values; temperature service applications-high; year date; ICS Number Code 21.060.01 (Fasteners in general)
To find similar documents by ASTM Volume:
01.01 (Steel--Piping, Tubing, Fittings)
To find similar documents by classification:
21.060.01 (Fasteners in general)
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Document Number
ASTM-A453/A453M-04
Revision Level
2004 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Oct. 1, 2004
Document Type
Specification
Page Count
6 pages
Committee Number
A01.22