ASTM A540 PDF

March 28, 2020 By:

ASTM A/AM Grade B23 is grade specification for alloy steel bolts, hex bolts, heavy hex bolts, stud bolts, etc for special purpose bolting. Find Grade B23 . ASTM A/AM Grade B22 is grade specification for alloy steel bolts, hex bolts, heavy hex bolts, stud bolts, etc for special purpose bolting. Find Grade B22 . ASTM A/AM Grade B21 is grade specification for alloy steel bolts, hex bolts, heavy hex bolts, stud bolts, etc for special purpose bolting. Find Grade B21 .

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Bolting material ordered in the annealed condition shall have a structure suitable for machining. Active view current version of standard. The minimum average of 3 specimens shall not be less than 25ft-lbf 34 J. The minimum average of 3 specimens shall not be less than 30ft-lbf 41 J.

This abstract is a brief summary of the referenced standard. B Unless otherwise specified, separate determinations may vary from the specified ranges, except that elements in any heat mush not vary both above and below the specified atsm. This specification covers regular and special-quality alloy steel bolting materials which may be used for nuclear and other special applications. The grade and class shall be specified by the purchaser.

Bolting materials as used in this specification cover rolled or forged bars, rotary pierced or extruded seamless tubes, bored bars, or forged hollows from forged or rolled bar segments to be manufactured into bolts, studs, washers, and nuts.

One specimen from a set of 3 may be less than 30 ft-lbf 41 J but not less than 25 ft-lbf 34J. This specification is expressed in both inch-pound units and in SI units.

The hardness shall be determined on the surface of the material removal of decarburization.

ASTM A/AM Grade B22 Class 1/2/3/4/5 Bolting

Combining values from the two systems may result in nonconformance with the specification. These supplementary requirements call for additional tests to be made and when desired shall be so stated in the order, together with the acceptance limits required. This specification covers 5 grades of bolting with twelve classes of yield strength ranging from 50 to ksi [ to Mpa] for used in high temperature service such as fasteners for pressure bessel and valve flanges.

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The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. These bolts are solution annealed and age hardened to provide maximum efficiency in their applications. The hardness of material in the annealed condition shall not be greater than HB. B Unless otherwise specified, separate determinations may vary from the specified ranges, except that elements in any heat mush not vary both above and below the specified range.

Material which is ordered in the liquid-quenched and tempered condition shall be uniformly reheated from a temperature below the cooling transformation range to the proper austenitizing temperature. The minimum average of 3 specimens shall not be less than 35ft-lbf 47 J. It shall be quenched in a liquid medium under substantially uniform conditions and then uniformly reheated for tempering.

ASTM A Specification – Boltport Fasteners LLP

Within the text, the Xstm units are shown in brackets. One specimen from a set of 3 may be less than 25 ft-lbf 34 J but not less than 20 ft-lbf 27J. Bolting ordered in the liquid quenched and tempered condition shall be uniformly reheated froma temperature below the cooling transformation range to the proper austenitizing temperature, quenched in a liquid medium under substantially uniform conditions, and then uniformly reheated for tempering.

ASTM A – Standard specification for Alloy Steel Bolting for Special Applications This specification covers 5 grades of bolting with twelve classes of yield strength ranging from 50 to ksi [ to Mpa] for used in high temperature service such as fasteners for pressure bessel and valve flanges. D Silicon content is 0. Bolting ordered in the liquid quenched and tempered condition shall be uniformly reheated froma temperature below the cooling transformation range to the proper austenitizing temperature, quenched in a liquid medium under substantially uniform conditions, and then uniformly reheated for tempering.

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ASTM A540 Specification

BoltPort primarily stocks and supply A Grade Boltings for high temperature service. The minimum average of 3 specimens shall not be less than 35ft-lbf 47 J. However, unless the order specifies the applicable” M” specification designation SI unitsthe material shall be furnished to inch-pound units. However, unless the order specifies the applicable “M” specification designation SI unitsthe material shall be furnished to inch-pound units.

One specimen from a set of 3 may be less than 35 ft-lbf 47 J but not less than 30 ft-lbf 41J. Bolting material ordered in the annealed condition shall have a structure suitable for machining. ASTM A Grade B23 is a high tensile alloy steel bolting grade intended for special application such as nuclear power plant installations. The values stated in each system are asfm exact equivalentsl therefore, each system must be used independently of the other.

The minimum average of 3 specimens shall not be less than 25ft-lbf 34 J. Supplementary requirements of an optional nature are provided for use when special quality is desired. Secondary processes are also permitted whereby steels made from these primary processes are remelted using electroslag-remelting, or vacuum-arc re-melting preocesses. A5400 Silicon content is 0.

One specimen from a set of 3 may be less than 35 ft-lbf 47 J but not less awtm 30 ft-lbf 41J. One specimen from a set of 3 may be less than 30 ft-lbf 41 J but not less than 25 ft-lbf 34J. The hardness of material in the quenched and tempered or quenched, temepred and stress-relieved condition shall be within the limits in hardness column of the mechanical properties table.