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ASTM A727/A727M-02

(Specification)

Standard Specification for Carbon Steel Forgings for Piping Components with Inherent Notch Toughness

Standard Specification for Carbon Steel Forgings for Piping Components with Inherent Notch Toughness

SCOPE
1.1 This specification covers forged carbon steel piping components intended primarily for service in pressure piping systems from 20 to +650°F [30 to +345°C] where inherent notch toughness is desired, but where notch toughness testing is not required. Included are forged or ring-rolled flanges, forged fittings, and valves made to specified dimensions, or to dimensional standards such as the ASME and API specifications referenced in Section 2.
1.2 This specification is limited to forgings with maximum finished section thicknesses no larger than 2 in. [51 mm].
1.3 It shall be the responsibility of the purchaser to determine whether material meeting the requirements of this specification is satisfactory for the service application.
1.4 Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply only when specified by the purchaser in the order.
Note 1—There are no provisions for impact testing in this specification. When impact testing is required, refer to Specification A 350/A 350M.
1.5 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.
1.6 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.

General Information

Status
Historical
Publication Date
09-Sep-2002
ICS
77.140.85 - Iron and steel forgings
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.22 - Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications
Current Stage
Ref Project

Relations

Replaces
ASTM A727/A727M-00 - Standard Specification for Carbon Steel Forgings for Piping Components with Inherent Notch Toughness
Effective Date
10-Sep-2002
Replaced By
ASTM A727/A727M-02(2007) - Standard Specification for Carbon Steel Forgings for Piping Components with Inherent Notch Toughness
Effective Date
01-Mar-2007
Referred By
ASTM A961/A961M-23 - Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications
Effective Date
10-Sep-2002

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ASTM A727/A727M-02 - Standard Specification for Carbon Steel Forgings for Piping Components with Inherent Notch ToughnessASTM A727/A727M-02 - Standard Specification for Carbon Steel Forgings for Piping Components with Inherent Notch Toughness
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ASTM A727/A727M-02 - Standard Specification for Carbon Steel Forgings for Piping Components with Inherent Notch Toughness
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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 727/A 727M – 02
Standard Specification for
Carbon Steel Forgings for Piping Components with Inherent
1
Notch Toughness
ThisstandardisissuedunderthefixeddesignationA727/A727M;thenumberimmediatelyfollowingthedesignationindicatestheyear
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope * 2. Referenced Documents
2
1.1 This specification covers forged carbon steel piping 2.1 In addition to those reference documents listed in
components intended primarily for service in pressure piping Specification A961, the following list of standards apply to
systems from −20 to +650°F [−30 to +345°C] where inherent this specification.
notch toughness is desired, but where notch toughness testing 2.2 ASTM Standards:
is not required. Included are forged or ring-rolled flanges, A350/A350M Specification for Carbon and Low-Alloy
forged fittings, and valves made to specified dimensions, or to Steel Forgings, Requiring Notch Toughness Testing for
3
dimensional standards such as the ASME and API specifica- Piping Compounds
tions referenced in Section 2. A370 TestMethodsandDefinitionsforMechanicalTesting
4
1.2 This specification is limited to forgings with maximum of Steel Products
finished section thicknesses no larger than 2 in. [51 mm]. A788 Specification for Steel Forgings, General Require-
5
1.3 It shall be the responsibility of the purchaser to deter- ments
mine whether material meeting the requirements of this speci- A961 Specification for Common Requirements for Steel
fication is satisfactory for the service application. Flanges, Forged Fittings, Valves, and Parts for Piping
3
1.4 Supplementary requirements are provided for use when Applications
additional testing or inspection is desired. These shall apply E59 PracticeforSamplingSteelandIronforDetermination
6
only when specified by the purchaser in the order. of Chemical Composition
7
2.3 ASME Boiler and Pressure Vessel Codes:
NOTE 1—There are no provisions for impact testing in this specifica-
Section II, Material Specifications, Part C
tion. When impact testing is required, refer to Specification A350/
SFA5.5 Low-Alloy Steel Covered Arc-Welding Electrodes
A350M.
B16.5 Steel Pipe Flanges and Flanged Fittings
1.5 This specification is expressed in both inch-pound units
B16.10 Face-to-Face and End-to-End Dimensions of Fer-
and in SI units. However, unless the order specifies the
rous Valves
applicable “M” specification designation (SI units), the mate-
B 16.11 Forged Steel Fittings, Socket-Welding and
rial shall be furnished to inch-pound units.
Threaded
1.6 The values stated in either inch-pound units or SI units
B16.30 Unfired Pressure Vessel Flange Dimensions
are to be regarded separately as standard. Within the text, the
8
2.4 API Standards:
SI units are shown in brackets. The values stated in each
600 Steel Gate Valves with Flanged or Butt-Welding Ends
system are not exact equivalents; therefore, each system must
602 Compact Design Carbon Steel Gate Valves for Refin-
beusedindependentlyoftheother.Combiningvaluesfromthe
ery Use
two systems may result in nonconformance with the specifi-
605 Large Diameter Carbon Steel Flanges
cation.
1 3
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Annual Book of ASTM Standards, Vol 01.01.
4
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee Annual Book of ASTM Standards, Vol 01.03.
5
A01.22 on Steel Forgings andWrought Fittings for PipingApplications and Bolting Annual Book of ASTM Standards, Vol 01.05.
6
Materials for Piping and Special Purpose Applications. Discontinued; see 1995 Annual Book of ASTM Standards, Vol 03.05.
7
Current edition approved Sept. 10, 2002. Published November 2002. Originally Available from American Society of Mechanical Engineers (ASME), ASME
published as A727–76. Last previous edition A727/A727M–00. International Headquarters, Three Park Ave., New York, NY 10016-5990.
2 8
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Available from The American Petroleum Institute (API), 1220 L. St., NW,
cation SA-727 in Section II of that Code. Washington, DC 20005.
*A Summary 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

---------------------- Page: 1 ----------------------
A 727/A 727M – 02
9
TABLE 1 Chemical Requirements
2.5 MSS Standard:
MSS SP-25 Standard Marking System for Valves, Fittings, Elements Composition, %
Flanges, and Unions
Carbon
Heat Analysis 0.25 max
3. General Requirements and Ordering Information Product Analysis 0.28 max
Manganese
3.1 Product furnished
...

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This specification covers a group of common requirements that, unless covered by the individual product specification in another ASTM document, applies to steel forgings for general use. Materials shall be produced primarily by either electric-furnace, basic oxygen, vacuum-induction (VIM), or open-hearth melting process. The primary melting may incorporate separate degassing or refining and may be followed by secondary melting, using electro slag (ESR) or vacuum arc remelting (VAR). Steel shall be forged by any of these three classes based on forging temperature: cold-worked forging, hot-cold-worked forging, or hot-worked forging. After forging, specimens shall be allowed to cool prior to reheating for heat treatment. Details of heat and product analyses for the evaluation of chemical composition are thoroughly discussed. Tension and hardness tests shall be conducted to evaluate mechanical properties such as percentage of elongation and reduction of area. Repair welding shall not be allowed unless permitted by the product specification.
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Standard Specification for Carbon Steel Forgings, for General-Purpose Piping

ABSTRACT
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1.1 This specification2 covers nonstandard as-forged fittings, valve components, and parts for general service. Forgings made to this specification are limited to a maximum weight of 10 000 lb [4540 kg]. Larger forgings may be ordered to Specification A266/A266M.  
1.2 Two classes of material are covered, designated as Classes 60 and 70, respectively, and are classified in accordance with their mechanical properties as specified in 6.1.  
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1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.4 Unless the order specifies an “M” designation, the material shall be furnished to inch-pound units.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM A668/A668M-23(Specification)
Standard Specification for Steel Forgings, Carbon and Alloy, for General Industrial Use

ABSTRACT
This specification deals with the standard requirements for untreated and heat-treated carbon and alloy steel forgings for general industrial use. This specification covers six classes of carbon steels (Class A to F) and seven classes of alloy steels (Class G, H, and J to N). Materials shall be forged by hot mechanical work. Except for Class A, all forgings shall be heat treated, depending on class, by the following techniques: annealed, or normalized, or normalized and tempered (Classes B, C, D, and G); normalized and tempered, or double-normalized and tempered (Class E); quenched and tempered, or normalized, quenched, and tempered (Classes F); normalized and tempered (Class H); normalized and tempered, or normalized, quenched, and tempered (Class J); and normalized, quenched, and tempered (Classes K, L, M, and N). Steel specimens shall undergo heat and product analyses, and shall conform to required chemical compositions for manganese, phosphorus, and sulfur. Steel forgings shall also be tested on their conformance to the following tensile requirements: tensile strength, yield point, yield strength, elongation, reduction of area, and Brinell hardness.
SCOPE
1.1 This specification covers untreated and heat-treated carbon and alloy steel forgings for general industrial use. Other ASTM specifications for forgings are available for specific applications such as pressure vessels, railroad use, turbine generators, gearing, and others involving special temperature requirements.  
1.2 Hot-rolled or cold finished bars are not within the scope of this specification.  
1.3 Six classes of carbon steel and seven classes of alloy steel forgings are listed (see Section 7), which indicate their required heat treatments, as well as mechanical properties.  
1.4 Provision, with the suffix H for certification and marking, for the supply of forgings after hardness testing only.  
1.5 Supplementary requirements, including those in Specification A788/A788M, of an optional nature are provided. These shall apply only when specified by the purchaser.  
1.6 Appendix X1 lists the current classes corresponding to the various classes of Specifications A235, A237, and A243, which have been superseded by this specification.  
1.7 The values stated in either SI units or inch-pound units are to be regarded separately as standard; within the text and tables, the SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.8 Unless the order specifies the applicable “M” specification, the forgings shall be furnished to the inch-pound units.  
1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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