ASTM A540 PDF

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

The minimum average of 3 specimens shall not be less than 25ft-lbf 34 J. Link to Active This link will always route to the current Active version of the standard. Secondary processes are also permitted whereby steels made from these primary processes are remelted using electroslag-remelting, or vacuum-arc re-melting preocesses. The primary melting wstm incorporate separate degassing or refining The molten steel may be vacuum-treated prior to or during pouring of the ingot.

The minimum average of 3 specimens shall not be less than 35ft-lbf 47 J. The minimum average asstm 3 specimens shall not be less than 30ft-lbf 41 J. Tensile test, hardness, and impact s540 shall be measured to conform to the required mechanical properties.

The hardness shall be determined on the surface of the material removal of decarburization. C Phosphorus and sulfur 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.

Such annealed bolting material is not intended to be used without subse-quent quenching and tempering as specified in 5. Such annealed material is not intended to be used without subsequent quenching and tempering. Combining values sstm the two systems may result in nonconformance with the specification. The astn 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.

ASTM A Specification – Boltport Fasteners LLP

D Silicon content is 0. D Silicon content is 0. These bolts are solution annealed and age hardened to provide maximum efficiency in their applications.

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Within the text, the SI units are shown in brackets. Such annealed material is not intended to be used without subsequent a50 and tempering. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. 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.

This specification covers regular and a504 alloy steel bolting materials which may be used for nuclear and other special applications.

ASTM A540 Grade B23

However, if desired by the purchaser, cold finishing may be specified. The hardness of material in the annealed condition shall not be greater than HB. Bolting materials as used in this specification cover rolled or forged bars, rotary pierced a504 extruded seamless tubes, bored bars, or forged hollows from forged or rolled bar segments to be manufactured into boltsstuds, washers, and nuts.

Supplementary requirements of an optional nature are provided for use when special quality is desired. The minimum average of 3 specimens shall not be less than 35ft-lbf 47 J. Such annealed material is not intended to be asttm without subsequent quenching and tempering.

Combining values from the two systems may result in non-conformance with the standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.

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. These supplementary requirements call for additional tests to be made and when desired shall be so stated in the order, together with aatm acceptance limits required.

However, unless the order specifies the applicable “M” specification designation SI unitsthe material shall be furnished to inch-pound units. Bolting ordered in the liquid quenched and tempered condition shall be uniformly reheated froma temperature below qstm 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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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 30ft-lbf 41 J. 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 values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. The hardness of material in the annealed condition shall not be greater than HB. The values stated in each system are not exact equivalentsl therefore, each system must be used independently of the other. One specimen from a set of 3 may be less than 35 ft-lbf 47 J but not less than 30 ft-lbf 41J.

Historical Version s – view previous versions of standard. Active view current version of standard. It shall be quenched in a liquid medium under substantially uniform conditions and then uniformly reheated for tempering.

These supplementary requirements call for additional tests to be made and when desired. C Phosphorus and sulfur content is 0. 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. ASTM A Grade B21 is a high tensile alloy steel bolting grade intended for special application such as nuclear power plant installations. The minimum tempering temperature shall be The steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel, molybdenum, vanadium. Within the text, the SI units are shown in brackets. The specification is expressed in both inch-pound units and in SI units. 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.

C Phosphorus and sulfur content is 0.

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