Standard Specification for High-Strength Quenched and Tempered Low-Alloy Steel Forged Fittings and Parts for Pressure Vessels

ABSTRACT
ASTM A592/A592M-04 covers the standard specification for high-strength quenched and tempered low-alloy steel forged fittings and parts used for pressure vessels. The steel shall be made by a melting process and shall be fully killed and fine grained. After forging and before reheating, the forgings shall be cooled to provide substantially complete transformation of austenite. Samples for mechanical test specimens shall be removed after the quenching and tempering heat treatment. The test specimens may be machined from a production forging or from special forged blocks suitably worked and heat treated with the production forgings. Such special blocks shall be obtained from an ingot, slab, or billet from the same heat as the forgings they represent and shall be reduced by forging in a manner similar to that for the products to be represented. The specimens shall undergo tension and Charpy V-notch impact tests.
SCOPE
1.1 This specification covers high-strength quenched and tempered low-alloy steel forged fittings and parts for pressure vessels. The maximum thickness of forgings under this specification shall be 11/2 in. [38 mm] for Grade A, and 4 in. [100 mm] for Grades E and F.
Note 1—These grades are similar to corresponding grades in Specification A 517/A 517M.
1.2 Although no provision is made for supplementary requirements in this standard, the supplementary requirements in Specification A 788 may be considered by the purchaser.
1.3 Welding technique is of fundamental importance and it is presupposed that welding procedures will be in accordance with approved methods for the class of material used.
1.4 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as the standard; 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 independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.5 Unless the order specifies the applicable "M" specification designation, the material shall be furnished to the inch-pound units.

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ASTM A592/A592M-04 - Standard Specification for High-Strength Quenched and Tempered Low-Alloy Steel Forged Fittings and Parts for Pressure Vessels
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A 592/A 592M – 04
Standard Specification for
High-Strength Quenched and Tempered Low-Alloy Steel
1
Forged Fittings and Parts for Pressure Vessels
This standard is issued under the fixed designationA592/A592M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope* A 517/A 517M Specification for Pressure Vessel Plates,
2 Alloy Steel, High-Strength, Quenched and Tempered
1.1 This specification covers high-strength quenched and
A 788 Specification for Steel Forgings, General Require-
tempered low-alloy steel forged fittings and parts for pressure
ments
vessels. The maximum thickness of forgings under this speci-
1 E 112 Test Methods for Determining the Average Grain
fication shall be 1 ⁄2 in. [38 mm] for Grade A, and 4 in. [100
Size
mm] for Grades E and F.
NOTE 1—These grades are similar to corresponding grades in Specifi- 3. Ordering Information and General Requirements
cation A 517/A 517M.
3.1 In addition to the ordering information required by
1.2 Although no provision is made for supplementary re-
Specification A 788, the purchaser shall include with the
quirements in this standard, the supplementary requirements in
inquiry and order the following information:
Specification A 788 may be considered by the purchaser.
3.1.1 Adetailed drawing, a sketch, or written description of
1.3 Welding technique is of fundamental importance and it
the forging.
is presupposed that welding procedures will be in accordance
3.1.2 The charpy impact test temperature if a test tempera-
with approved methods for the class of material used.
ture lower than 32 °F [0 °C] is required.
1.4 The values stated in either inch-pound units or SI
3.1.3 Additional heat treatment cycles to be applied to the
(metric) units are to be regarded separately as the standard;
mechanical test specimens following removal from the heat-
within the text and tables, the SI units are shown in [brackets].
treated forging or special forged test block.
The values stated in each system are not exact equivalents;
3.1.4 Required supplementary requirement(s) from specifi-
therefore,eachsystemmustbeusedindependentlyoftheother.
cation A 788.
Combining values from the two systems may result in noncon-
3.2 Material supplied to this specification shall conform to
formance with the specification.
the requirements of Specification A 788, which outlines addi-
1.5 Unless the order specifies the applicable “M” specifica-
tional ordering information, manufacturing requirements, test-
tion designation, the material shall be furnished to the inch-
ing and retesting methods and procedures, marking, certifica-
pound units.
tion, product analysis variations, and additional supplementary
requirements. Failure to comply with the requirements of
2. Referenced Documents
Specification A 788 constitutes non-conformance with this
3
2.1 ASTM Standards:
specification.
A 370 Test Methods and Definitions for MechanicalTesting
3.3 If the requirements of this specification are in conflict
of Steel Products
with the requirements of SpecificationA 788, the requirements
of this specification shall prevail.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
4. Materials and Manufacture
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.06 on Steel Forgings and Billets.
4.1 MeltingProcess—Thesteelshallbemadeinaccordance
Current edition approved May 1, 2004. Published June 2004. Originally
with the Melting Process Section of Specification A 788.
approved in 1968. Last previous edition approved in 1999 as A 592 – 89 (1999).
2
4.2 Grain Size—The steel shall be fully killed, fine grained
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SA-592/SA-592M in Section II of that Code. (ASTM No. 5 or finer), as determined in accordance with Test
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Methods E 112, Plate IV.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4.3 Discard—Sufficient discard shall be made from each
Standards volume information, refer to the standard’s Document Summary page on
ingottoensurefreedomfrompipingandexcessivesegregation.
the ASTM website.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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A 592/A 592M – 04
TABLE 2 Tensile Requirements
4.4 The finished product shall be a hot-worked forging as
1 1
defined by SpecificationA 788, and shall be forged as cl
...

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