Standard Specification for Wrought-Carbon Steel Butt-Welding Piping Fittings with Improved Notch Toughness

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PDF

Language(s)

English

Published date

10-01-2014

Publisher

American Society for Testing and Materials

CONTAINED IN VOL. 01.01, 2017 Specifies wrought-carbon steel butt-welding seamless or welded fittings specially processed to ensure better notch toughness, than previously resulted from the requirements of the Standard A 234/A 234M.

1.1This 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.

1.1.1Included are elbows, caps, tees, reducers, and other type fittings covered by ASME B16.9.

1.1.2Heat treatment is required for all fittings.

1.1.3Fittings with mandatory radiographic examination of welds are included.

1.1.4Supplementary requirements are provided for use when additional testing or examination is desired.

1.1.5Cast fittings, and fittings formed from all weld metal, are not included.

1.2Several 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

1.3It shall be the responsibility of the purchaser to determine whether material meeting the requirements of this specification is satisfactory for the service application.

1.4This 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.

1.5The 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.

Committee	A 01
DevelopmentNote	Supersedes ASTM A 758. (12/2009)
DocumentType	Redline
Pages	10
PublisherName	American Society for Testing and Materials
Status	Current

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