ASTM A758/A758M-10
(Specification)Standard Specification for Wrought-Carbon Steel Butt-Welding Piping Fittings with Improved Notch Toughness
Standard Specification for Wrought-Carbon Steel Butt-Welding Piping Fittings with Improved Notch Toughness
ABSTRACT
This guide covers standard specification for wrought-carbon steel butt-welding seamless or welded fittings specially processed to ensure better notch toughness. Heat treatment shall be required for all types of fittings. Fittings with mandatory radiographic examination of welds shall be included. Cast fittings and fittings formed from all weld metal, shall not be included. Heat or cast analysis shall be conducted wherein the material shall conform to the required chemical components for carbon, manganese, phosphorus, sulfur, silicon, vanadium, chromium, nickel, molybdenum, copper, and lead. The fittings, as represented by tensile test specimens taken subsequent to final heat treatment, shall conform to the specified values of tensile strength, yield strength, and elongation for the applicable grades of steel. Mechanical tests such as tension test and transverse guided weld bend test shall be performed on the fittings.
SCOPE
1.1 This specification covers wrought-carbon steel butt-welding seamless or welded fittings specially processed to ensure better notch toughness than that to be expected in fittings manufactured to the requirements of Specification A234/A234M.
1.1.1 Included are elbows, caps, tees, reducers, and other type fittings covered by ASME B16.9.
1.1.2 Heat treatment is required for all fittings.
1.1.3 Fittings with mandatory radiographic examination of welds are included.
1.1.4 Supplementary requirements are provided for use when additional testing or examination is desired.
1.1.5 Cast fittings, and fittings formed from all weld metal, are not included.
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Designation:A758/A758M −10
StandardSpecification for
Wrought-Carbon Steel Butt-Welding Piping Fittings with
1
Improved Notch Toughness
This standard is issued under the fixed designationA758/A758M; 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* SI units are shown in brackets. The values stated in each
system may not be exact equivalents; therefore, each system
1.1 This specification covers wrought-carbon steel butt-
shall be used independently of the other. Combining values
welding seamless or welded fittings specially processed to
from the two systems may result in non-conformance with the
ensure better notch toughness than that to be expected in
standard.
fittings manufactured to the requirements of Specification
A234/A234M.
2. Referenced Documents
1.1.1 Included are elbows, caps, tees, reducers, and other
type fittings covered by ASME B16.9. 2.1 In addition to those reference documents listed in
Specification A960/A960M, the following list of standards
1.1.2 Heat treatment is required for all fittings.
apply to this specification:
1.1.3 Fittings with mandatory radiographic examination of
2
welds are included.
2.2 ASTM Standards:
1.1.4 Supplementary requirements are provided for use
A234/A234M Specification for Piping Fittings of Wrought
when additional testing or examination is desired.
Carbon Steel and Alloy Steel for Moderate and High
1.1.5 Cast fittings, and fittings formed from all weld metal,
Temperature Service
are not included.
A275/A275M Practice for Magnetic Particle Examination of
Steel Forgings
1.2 Several type of fittings are provided, as follows:
A960/A960M Specification for Common Requirements for
Heat Treatment Weld Seam Radiography
Type Required Finish (5.3.2) Required? Wrought Steel Piping Fittings
E165 Practice for Liquid Penetrant Examination for General
30 normalize UW-35 no
Industry
31 normalize UW-35 yes
32 normalize UW-35 and ground flush yes
E709 Guide for Magnetic Particle Testing
40 normalize and temper UW-35 no
3
2.3 ASME Boiler and Pressure Vessel Code (ASME Code):
41 normalize and temper UW-35 yes
42 normalize and temper UW-35 and ground flush yes Section VIII, Division 1 Pressure Vessels
50 quench and temper UW-35 no
Section IX , Welding and Brazing Qualifications
51 quench and temper UW-35 yes
52 quench and temper UW-35 and ground flush yes 2.4 ASME Standard:
3
B16.9 Standards for Steel Butt-Welding Fittings
1.3 It shall be the responsibility of the purchaser to deter-
mine whether material meeting the requirements of this speci-
2.5 ASNT Standard:
fication is satisfactory for the service application.
SNT-TC-1A Practice for Nondestructive Examination Per-
4
sonnel Qualification and Certification
1.4 This specification is expressed in both inch-pound units
and SI units. However, unless the order specifies the applicable
3. Ordering Information
“M” specification designation (SI units), the material shall be
furnished to inch-pound units. 3.1 See Specification A960/A960M.
1.5 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. Within the text, the
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
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel, Standards volume information, refer to the standard’s Document Summary page on
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee the ASTM website.
3
A01.22 on Steel Forgings andWrought Fittings for PipingApplications and Bolting Available from American Society of Mechanical Engineers (ASME), ASME
Materials for Piping and Special Purpose Applications. International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
Current edition approved Nov. 1, 2010. Published December 2010. Originally www.asme.org.
4
approved in 1978. Last previous edition approved in 2009 as A758/A758M–09. AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
DOI: 10.1520/A0758_A0758M-10. 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
1
---------------------- Page: 1 ----------------------
A758/A758M−10
4. General Requirements 6. Chemical Composition
4.1 Product furnished to this specification shall conform to 6.1 Heat or CastAnalysis—The results shall conform to the
the requirements of Specification A960/A960M, including any requirem
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:A758/A758M–09 Designation: A758/A758M – 10
Standard Specification for
Wrought-Carbon Steel Butt-Welding Piping Fittings with
1
Improved Notch Toughness
This standard is issued under the fixed designationA758/A758M; 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 wrought-carbon steel butt-welding seamless or welded fittings specially processed to ensure better
notch toughness than that to be expected in fittings manufactured to the requirements of Specification A234/A234M.
1.1.1 Included are elbows, caps, tees, reducers, and other type fittings covered by ASME B16.9.
1.1.2 Heat treatment is required for all fittings.
1.1.3 Fittings with mandatory radiographic examination of welds are included.
1.1.4 Supplementary requirements are provided for use when additional testing or examination is desired.
1.1.5 Cast fittings, and fittings formed from all weld metal, are not included.
1.2 Several type of fittings are provided, as follows:
Heat Treatment Weld Seam Radiography
Type Required Finish (5.3.2) Required?
30 normalize UW-35 no
31 normalize UW-35 yes
32 normalize UW-35 and ground flush yes
40 normalize and temper UW-35 no
41 normalize and temper UW-35 yes
42 normalize and temper UW-35 and ground flush yes
50 quench and temper UW-35 no
51 quench and temper UW-35 yes
52 quench and temper UW-35 and ground flush yes
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 Thisspecificationisexpressedinbothinch-poundunitsandSIunits.However,unlesstheorderspecifiestheapplicable“M”
specification designation (SI units), the material shall be furnished to inch-pound units.
1.5 ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits
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.
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:
A234/A234M Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature
Service
A275/A275M Practice for Magnetic Particle Examination of Steel ForgingsA370Test Methods and Definitions for Mechanical
Testing of Steel Products
A960/A960M Specification for Common Requirements for Wrought Steel Piping Fittings
E165 Practice for Liquid Penetrant Examination for General Industry
E709 Guide for Magnetic Particle Testing
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.22
on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.
Current edition approved Oct.Nov. 1, 2009.2010. Published November 2009.December 2010. Originally approved in 1978. Last previous edition approved in 20052009
as A758/A758M–00(2005).A758/A758M–09. DOI: 10.1520/A0758_A0758M-109.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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 ----------------------
A758/A758M – 10
3
2.3 ASME Boiler and Pressure Vessel Code (ASME Code):
Section VIII, Division 1 Pressure Vessels
Section IX , Welding and Brazing Qualifications
2.4 ASME Standard:
3
B16.9 Standards for Steel Butt-Welding Fittings
2.5 ASNT Standard:
4
SNT-TC-1A Practice for Nondestructive Examination Personnel Qualification and Certification
3. Ordering Information
3.1 See Specification A960/A960M.
4. General Requirements
4.1 Product furnished to this specification shall conform to the requirements of Specification A960/A960M, including any
supplementary require
...
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