ASTM A758/A758M-14(2019)
Standard Specification for Wrought-Carbon Steel Butt-Welding Piping Fittings with Improved Notch Toughness

Standard No.

ASTM A758/A758M-14(2019)

Release Date

2019

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM A758/A758M-14(2019)

Scope

1.1 This specification covers wrought-carbon steel buttwelding 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: Type Heat Treatment Required Weld Seam Finish (5.3.2) Radiography 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 This specification is expressed in both inch-pound units and SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished to inch-pound units. 1.5 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. 1.6 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.

ASTM A758/A758M-14(2019) Referenced Document

• ASTM A234/A234M Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
• ASTM A275/A275M Standard Test Method for Magnetic Particle Examination of Steel Forgings
• ASTM A960/A960M Standard Specification for Common Requirements for Wrought Steel Piping Fittings*， 2023-05-16 Update
• ASTM E165 Standard Test Method for Liquid Penetrant Examination
• ASTM E709 Standard Guide for Magnetic Particle Examination

ASTM A758/A758M-14(2019) history

• 2019 ASTM A758/A758M-14(2019) Standard Specification for Wrought-Carbon Steel Butt-Welding Piping Fittings with Improved Notch Toughness
• 2014 ASTM A758/A758M-14 Standard Specification for Wrought-Carbon Steel Butt-Welding Piping Fittings with Improved Notch Toughness
• 2013 ASTM A758/A758M-13 Standard Specification for Wrought-Carbon Steel Butt-Welding Piping Fittings with Improved Notch Toughness
• 2010 ASTM A758/A758M-10 Standard Specification for Wrought-Carbon Steel Butt-Welding Piping Fittings with Improved Notch Toughness
• 2009 ASTM A758/A758M-09 Standard Specification for Wrought-Carbon Steel Butt-Welding Piping Fittings with Improved Notch Toughness
• 2000 ASTM A758/A758M-00(2005) Standard Specification for Wrought-Carbon Steel Butt-Welding Piping Fittings with Improved Notch Toughness
• 2000 ASTM A758/A758M-00 Standard Specification for Wrought-Carbon Steel Butt-Welding Piping Fittings with Improved Notch Toughness