ASTM A858/A858M-19
(Specification)Standard Specification for Heat-Treated Carbon Steel Fittings for Low-Temperature and Corrosive Service
Standard Specification for Heat-Treated Carbon Steel Fittings for Low-Temperature and Corrosive Service
ABSTRACT
This specification covers heat-treated wrought carbon steel piping fittings with lowered carbon content of seamless and electric fusion-welded construction for low-temperature and corrosive service applications. These fittings are for use in pressure components where inherent notch toughness and optimum sulfide-cracking resistance are required, such as oil and gas industry piping and distribution systems. The materials shall be manufactured by forging and shaping methods which involves hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or by a combination of these operations. Fittings shall be heat treated by normalizing, quenching, and tempering or stress-relieving. Product analyses shall be performed wherein specimens shall conform to required chemical composition of carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, and copper. The fittings shall undergo tension and impact tests, and shall conform to the following mechanical requirements: yield strength, tensile strength, elongation, and notch toughness.
SCOPE
1.1 This specification covers heat-treated wrought carbon steel piping fittings with lowered carbon content of seamless and electric fusion-welded construction covered by the latest revisions in ASME B16.9, ASME B16.11, MSS SP-75, MSS SP-79, MSS SP-83, MSS SP-95, or MSS SP-97. Fittings differing from these ASME and MSS standards shall be furnished in accordance with Supplementary Requirement S58 of Specification A960/A960M. These fittings are for use in pressure components where inherent notch toughness and optimum sulfide-cracking resistance are required, such as oil and gas industry piping and distribution systems.
1.2 Optional supplementary requirements are provided for fittings when a greater degree of examination is desired. One or more of the supplementary requirements may be specified in the order.
1.3 This specification does not cover cast-welding fittings or fittings machined from castings.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Unless the other specifies the applicable “M” specification designation (SI units), 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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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.
Designation:A858/A858M −19
Standard Specification for
Heat-Treated Carbon Steel Fittings for Low-Temperature and
1
Corrosive Service
This standard is issued under the fixed designationA858/A858M; the number immediately following the designation indicates the year
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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
1.1 This specification covers heat-treated wrought carbon
2.1 In addition to those reference documents listed in
steel piping fittings with lowered carbon content of seamless
Specification A960/A960M, the following list of standards
and electric fusion-welded construction covered by the latest
apply to this specification.
revisions in ASME B16.9, ASME B16.11, MSS SP-75, MSS
2
2.2 ASTM Standards:
SP-79, MSS SP-83, MSS SP-95, or MSS SP-97. Fittings
A960/A960MSpecification for Common Requirements for
differing from these ASME and MSS standards shall be
Wrought Steel Piping Fittings
furnished in accordance with Supplementary Requirement S58
3
of Specification A960/A960M. These fittings are for use in 2.3 ASME Standards:
B16.9Steel Butt-Welding Fittings
pressure components where inherent notch toughness and
optimum sulfide-cracking resistance are required, such as oil B16.11Forged Steel Fittings, Socket Welding and Threaded
4
and gas industry piping and distribution systems.
2.4 MSS Standards:
1.2 Optional supplementary requirements are provided for MSS SP-75Specification for High Test Wrought Butt-
Welding Fittings
fittingswhenagreaterdegreeofexaminationisdesired.Oneor
MSS SP-79Socket Welding Reducer Inserts
more of the supplementary requirements may be specified in
MSS SP-83 Steel Pipe Unions, Socket-Welding and
the order.
Threaded
1.3 Thisspecificationdoesnotcovercast-weldingfittingsor
MSS SP-95Swage(d) Nipples and Bull Plugs
fittings machined from castings.
MSS SP-97Integrally Reinforced Forged Branch Outlet
1.4 The values stated in either SI units or inch-pound units
Fittings—Socket Welding, Threaded and Buttwelding
are to be regarded separately as standard. Within the text, the
Ends
SI units are shown in brackets. The values stated in each
2.5 ASME Boiler and Pressure Vessel Code:
system may not be exact equivalents; therefore, each system
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Section V
shall be used independently of the other. Combining values
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Section VIIIDivision 1
from the two systems may result in non-conformance with the
Section IX
standard. Unless the other specifies the applicable “M” speci-
6
2.6 American Society of Nondestructive Testing:
fication designation (SI units), the material shall be furnished
SNT-TC-1A Recommended Practice for Nondestructive
to inch-pound units.
Testing Personnel Qualification and Certification
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Development of International Standards, Guides and Recom-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
mendations issued by the World Trade Organization Technical
Standards volume information, refer to the standard’s Document Summary page on
Barriers to Trade (TBT) Committee.
the ASTM website.
3
Available from American Society of Mechanical Engineers (ASME), ASME
International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.org.
1 4
This specification is under the jurisdiction ofASTM Committee A01 on Steel, AvailablefromManufacturersStandardizationSocietyoftheValveandFittings
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-
A01.22onSteelForgingsandWroughtFittingsforPipingApplicationsandBolting hq.com.
5
Materials for Piping and Special Purpose Applications. Available from Society of Automotive Engineers (SAE), 400 Commonwealth
Current edition approved Dec. 1, 2019. Published December 2019. Originally Dr., Warrendale, PA 15096-0001, http://www.sae.org.
6
approved in 1986. Last previous edition approved in 2014 as A858/A858M–14. AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
DOI: 10.1520/A0858_A0858M-19. 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
*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
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This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A858/A858M − 14 A858/A858M − 19
Standard Specification for
Heat-Treated Carbon Steel Fittings for Low-Temperature and
1
Corrosive Service
This standard is issued under the fixed designation A858/A858M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This specification covers heat-treated wrought carbon steel piping fittings with lowered carbon content of seamless and
electric fusion-welded construction covered by the latest revisions in ASME B16.9, ASME B16.11, MSS SP-75, MSS SP-79, MSS
SP-83, MSS SP-95, or MSS SP-97. Fittings differing from these ASME and MSS standards shall be furnished in accordance with
Supplementary Requirement S58 of Specification A960/A960M. These fittings are for use in pressure components where inherent
notch toughness and optimum sulfide-cracking resistance are required, such as oil and gas industry piping and distribution systems.
1.2 Optional supplementary requirements are provided for fittings when a greater degree of examination is desired. One or more
of the supplementary requirements may be specified in the order.
1.3 This specification does not cover cast-welding fittings or fittings machined from castings.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units
are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used
independently of the other. Combining values from the two systems may result in non-conformance with the standard. Unless the
other specifies the applicable “M” specification designation (SI units), 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.
2. Referenced Documents
2.1 In addition to those reference documents listed in Specification A960/A960M, the following list of standards apply to this
specification.
2
2.2 ASTM Standards:
A960/A960M Specification for Common Requirements for Wrought Steel Piping Fittings
3
2.3 ASME Standards:
B16.9 Steel Butt-Welding Fittings
B16.11 Forged Steel Fittings, Socket Welding and Threaded
4
2.4 MSS Standards:
MSS SP-25 The Standard Marking System of Valves, Fittings, Flanges and Unions
MSS SP-75 Specification for High Test Wrought Butt-Welding Fittings
MSS SP-79 Socket Welding Reducer Inserts
MSS SP-83 Steel Pipe Unions, Socket-Welding and Threaded
MSS SP-95 Swage(d) Nipples and Bull Plugs
MSS SP-97 Integrally Reinforced Forged Branch Outlet Fittings—Socket Welding, Threaded and Buttwelding Ends
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.22
on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.
Current edition approved Oct. 1, 2014Dec. 1, 2019. Published October 2014December 2019. Originally approved in 1986. Last previous edition approved in 20132014
as A858/A858MA858/A858M – 14.–13. DOI: 10.1520/A0858_A0858M-14.10.1520/A0858_A0858M-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.org.
4
Available from Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-hq.com.
*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
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A858/A858M − 19
2.5 ASME Boiler and Pressure Vessel Code:
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Section V
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Section VIII Division 1
Section IX
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2.6 American Society of Nondestructiv
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