ASTM B429/B429M-20

Standard Specification for Aluminum-Alloy Extruded Structural Pipe and Tube

ABSTRACT
This specification covers UNS A96061 or A96063 aluminum alloy extruded pipes and tubes intended for use in structural applications. The structural pipes and tubes that may be produced through a bridge/porthole type die or other approved methods are not for use in fluid-carrying applications involving pressure. Both alloys may be extrusion press solution heat treated to produce the specified tempers. Each pipe or tube should be supplied with plain square-cut ends and mill finished unless otherwise specified. Samples for chemical analysis should be taken from the materials by drilling, sawing, turning, or clipping and subjected to suitable chemical or spectrochemical methods of analysis.
SCOPE
1.1 This specification covers aluminum-alloy extruded structural pipe and tube in those selected alloys shown in Table 1 and tempers shown in Table 2, and in those standard sizes shown in Tables 3-5, as well as in other nonstandard sizes as agreed upon between the purchaser and supplier. Such pipe and tube is intended for use in structural applications such as highway and bridge rails, chain-link fence posts, handrails, sign structures, awning supports, lighting brackets, etc. Structural pipe and tube is not intended for fluid-carrying applications involving pressure.      
Note 1: For drawn seamless tube used in pressure applications see Specifications B210/B210M, for seamless pipe and seamless extruded tube used in pressure applications see Specifications B241/B241M, and for drawn tube and pipe for general purpose applications see Specification B483/B483M.  
1.2 Alloy and temper designations are in accordance with ANSI H35.1/H35.1M. The equivalent Unified Numbering System alloy designations are those of Table 1 preceded by A9 (for example, A96061 for alloy 6061 in accordance with Practice E527).  
1.3 For acceptance criteria for inclusion of new aluminum and aluminum alloys in this specification, see Annex A2.  
1.4 Units—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.  
1.4.1 Metric Sizes—While this is a combined SI and inch-pound units specification, there are no standard equivalent metric designations for pipe. Metric sizes are converted and shown only for user convenience.  
1.4.2 While this is a combined SI and inch-pound units specification, standard pipe sizes are not applicable to SI units, therefore non-rationalized SI units (soft conversions) are shown for reader convenience. Rationalized [hard converted] SI units are shown in brackets while non-rationalized (soft converted) SI units are shown in parentheses.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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.

General Information

• Status: Published
• Publication Date: 31-Oct-2020
• ICS: 77.150.10 - Aluminium products
• Technical Committee: B07 - Light Metals and Alloys
• Drafting Committee: B07.03 - Aluminum Alloy Wrought Products

Standards Content (Sample)

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:B429/B429M −20
Standard Specification for
1
Aluminum-Alloy Extruded Structural Pipe and Tube
This standard is issued under the fixed designation B429/B429M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 1.4.2 While this is a combined SI and inch-pound units
specification, standard pipe sizes are not applicable to SI units,
1.1 This specification covers aluminum-alloy extruded
therefore non-rationalized SI units (soft conversions) are
structural pipe and tube in those selected alloys shown in Table
shown for reader convenience. Rationalized [hard converted]
1 and tempers shown in Table 2, and in those standard sizes
SI units are shown in brackets while non-rationalized (soft
shown in Tables 3-5, as well as in other nonstandard sizes as
converted) SI units are shown in parentheses.
agreeduponbetweenthepurchaserandsupplier.Suchpipeand
1.5 This standard does not purport to address all of the
tube is intended for use in structural applications such as
safety concerns, if any, associated with its use. It is the
highway and bridge rails, chain-link fence posts, handrails,
responsibility of the user of this standard to establish appro-
sign structures, awning supports, lighting brackets, etc. Struc-
priate safety, health, and environmental practices and deter-
tural pipe and tube is not intended for fluid-carrying applica-
mine the applicability of regulatory limitations prior to use.
tions involving pressure.
1.6 This international standard was developed in accor-
NOTE 1—For drawn seamless tube used in pressure applications see
Specifications B210/B210M, for seamless pipe and seamless extruded
dance with internationally recognized principles on standard-
tube used in pressure applications see Specifications B241/B241M, and
ization established in the Decision on Principles for the
for drawn tube and pipe for general purpose applications see Specification
Development of International Standards, Guides and Recom-
B483/B483M.
mendations issued by the World Trade Organization Technical
1.2 Alloy and temper designations are in accordance with
Barriers to Trade (TBT) Committee.
ANSI H35.1/H35.1M. The equivalent Unified Numbering
System alloy designations are those of Table 1 preceded byA9
2. Referenced Documents
(for example, A96061 for alloy 6061 in accordance with
2
2.1 ASTM Standards:
Practice E527).
B210/B210M Specification for Aluminum and Aluminum-
1.3 For acceptance criteria for inclusion of new aluminum
Alloy Drawn Seamless Tubes
and aluminum alloys in this specification, see Annex A2.
B241/B241M Specification for Aluminum and Aluminum-
Alloy Seamless Pipe and Seamless Extruded Tube
1.4 Units—The values stated in either SI units or inch-
B483/B483M Specification for Aluminum and Aluminum-
pound units are to be regarded separately as standard. SI units
Alloy Drawn Tube and Drawn Pipe for General Purpose
are shown in brackets.The values stated in each system are not
Applications
necessarilyexactequivalents;therefore,toensureconformance
B557 Test Methods for Tension Testing Wrought and Cast
with the standard, each system shall be used independently of
Aluminum- and Magnesium-Alloy Products
the other, and values from the two systems shall not be
B557M Test Methods for Tension Testing Wrought and Cast
combined.
Aluminum- and Magnesium-Alloy Products (Metric)
1.4.1 Metric Sizes—While this is a combined SI and inch-
B660 Practices for Packaging/Packing of Aluminum and
pound units specification, there are no standard equivalent
Magnesium Products
metric designations for pipe. Metric sizes are converted and
B666/B666M Practice for Identification Marking of Alumi-
shown only for user convenience.
num and Magnesium Products
B807/B807M Practice for Extrusion Press Solution Heat
Treatment for Aluminum Alloys
1
This specification is under the jurisdiction of ASTM Committee B07 on Light
Metals and Alloys and is the direct responsibility of Subcommittee B07.03 on
Aluminum Alloy Wrought Products.
2
Current edition approved Nov. 1, 2020. Published November 2020. Originally For referenced ASTM standards, visit the ASTM website, www.astm.org, or
ε1
approved in 1965. Last previous edition approved in 2010 as B429/B429M – 10 contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
which was withdrawn in January 2019 and reinstated in November 2020. DOI: Standa
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