ASTM A540 PDF

March 20, 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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These supplementary requirements call for additional tests to be made and when desired. The hardness shall be determined on the surface of the material removal of decarburization. However, unless the order specifies the applicable “M” specification designation SI unitsthe material shall be furnished to inch-pound units.

B Unless otherwise specified, separate determinations may vary from ashm specified ranges, except that elements in any heat mush not vary both above and below the specified range. Link to Active This link will always route to the current Active version of the standard. C Phosphorus and sulfur content is 0.

Bolting ordered in the liquid quenched and tempered condition shall be uniformly reheated froma temperature below a54 cooling transformation range to the proper austenitizing temperature, quenched in a liquid medium under substantially uniform conditions, and then uniformly reheated for tempering. The hardness of material in the annealed condition shall not be greater than HB. The minimum average of 3 specimens shall not be less than 25ft-lbf 34 J.

ASTM A Bolts, ASTM A Alloy Steel Bolting, ASTM A Grade B21 Bolts

The minimum average of 3 specimens shall not be less than 30ft-lbf 41 J. The minimum average of 3 specimens shall not be less than 35ft-lbf 47 J. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. These bolts need to undergo charpy v notch impact test as compulsory requirement. It shall be quenched in a liquid medium under substantially uniform conditions and then uniformly reheated for tempering. The grade and class shall be specified by the purchaser.

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The grade and class shall be specified by the purchaser. D Silicon content is 0. Asym ordered in the liquid quenched wstm 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.

The minimum average of 3 specimens shall not be less than 25ft-lbf 34 J. These bolts need to undergo charpy v notch impact test as compulsory requirement. Such annealed material is not intended to be used without subsequent quenching and tempering.

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.

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.

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. One specimen from a set of 3 may be less than 35 ft-lbf 47 J but not less than 30 ft-lbf 41J.

The minimum average of 3 specimens shall not be less than 30ft-lbf 41 J.

ASTM A540 / A540M Grade B23 Class 1/2/3/4/5 Alloy Steel Bolting

Bolting material ordered in the annealed condition shall have a structure suitable for machining. However, unless the order specifies the applicable” M” specification designation SI unitsthe material shall be furnished to inch-pound units.

Active view current version of standard. The minimum average of 3 specimens shall not be less than 25ft-lbf 34 J.

ASTM A540 Specification

Link to Active This link will always route to the current Active version of the standard. One specimen from a set of 3 may be less than 25 ft-lbf 34 J but not less than 20 ft-lbf 27J.

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One specimen from a set of 3 may be less than 35 ft-lbf 47 J but not less than 30 ft-lbf 41J. 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. One specimen from a set of 3 may be less than 25 ft-lbf 34 J but not less than 20 ft-lbf 27J.

The minimum average of 3 specimens shall not be less than 35ft-lbf 47 J. ASTM A Grade B21 is a high tensile alloy steel bolting grade intended for special application such as nuclear power plant installations.

Bolting asfm ordered in the annealed condition shall have a structure suitable for machining.

ASTM A Specification – Boltport Fasteners LLP

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.

The specification is expressed in both inch-pound units and in SI units. 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 Grade B22 is a high tensile alloy steel bolting grade intended for special application such as nuclear power plant installations. C Phosphorus and sulfur content is 0. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. The minimum average of 3 specimens shall not be less than 35ft-lbf 47 J.

Bolting material ordered in the annealed condition shall have a structure suitable for machining.