ASTM B429-00
(Specification)Standard Specification for Aluminum-Alloy Extruded Structural Pipe and Tube
Standard Specification for Aluminum-Alloy Extruded Structural Pipe and Tube
SCOPE
1.1 This specification covers aluminum-alloy pipe and extruded tube in selected alloys and tempers and in standard sizes as shown in the tables in Appendix X1. This 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 Specification B210, and for seamless pipe and seamless extruded tube used in pressure applications see Specification B241.
1.2 Alloy and temper designations are in accordance with ANSI H35.1. 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 The values stated in inch-pound units are the standard. The values given in parentheses are for information only.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: B 429 – 00
Standard Specification for
Aluminum-Alloy Extruded Structural Pipe and Tube
This standard is issued under the fixed designation B 429; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope * Determine Conformance with Specifications
E 34 Test Methods for Chemical Analysis of Aluminum and
1.1 This specification covers aluminum-alloy pipe and ex-
Aluminum Base Alloys
truded tube in selected alloys and tempers and in standard sizes
E 55 Practice for Sampling Wrought Nonferrous Metals and
as shown in the tables in Appendix X1. This pipe and tube is
Alloys for Determination of Chemical Composition
intended for use in structural applications such as highway and
E 227 Test Method for Optical Emission Spectrometric
bridge rails, chain-link fence posts, handrails, sign structures,
Analysis of Aluminum and Aluminum Alloys by the
awning supports, lighting brackets, etc. Structural pipe and
Point-to-Plane Technique
tube is not intended for fluid-carrying applications involving
E 527 Practice for Numbering Metals and Alloys (UNS)
pressure.
E 607 Test Method for Optical Emission Spectrometric
NOTE 1—For drawn seamless tube used in pressure applications see
Analysis of Aluminum and Aluminum Alloys by the
Specification B 210, and for seamless pipe and seamless extruded tube
Point-to-Plane Technique, Nitrogen Atmosphere
used in pressure applications see Specification B 241.
E 716 Practices for Sampling Aluminum and Aluminum
1.2 Alloy and temper designations are in accordance with 6
Alloys for Spectrochemical Analysis
ANSI H35.1. The equivalent Unified Numbering System alloy
E 1251 Test Method for Optical Emission Spectrometric
designations are those of Table 1 preceded by A9, for example,
Analysis of Aluminum and Aluminum Alloys by the Argon
A96061 for alloy 6061 in accordance with Practice E 527.
Atmosphere, Point-to-Plane, Unipolar Self-Initiating Ca-
1.3 For acceptance criteria for inclusion of new aluminum 6
pacitor Discharge
and aluminum alloys in this specification, see Annex A2.
2.3 ANSI Standards:
1.4 The values stated in inch-pound units are the standard.
H35.1 Alloy and Temper Designations Systems for Alumi-
The values given in parentheses are for information only.
num
H35.2 Dimensional Tolerance for Aluminum Mill Products
2. Referenced Documents
2.4 Military Standards:
2.1 The following documents of the date of issue in effect
MIL-STD-129, Marking for Shipment and Storage
on date of material procurement form a part of this specifica-
2.5 Federal Standards:
tion to the extent referenced herein:
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
2.2 ASTM Standards:
B 557 Test Methods of Tension Testing Wrought and Cast 3. Terminology
Aluminum- and Magnesium-Alloy Products
3.1 Definitions:
B 597 Practice for Heat Treatment of Aluminum Alloys
3.1.1 extruded structural pipe—extruded structural tube
B 660 Practices for Packaging/Packing of Aluminum and
having certain standardized sizes of outside diameter and wall
Magnesium Products
thickness commonly designated by “Nominal Pipe Sizes” and
B 666/B 666M Practice for Identification Marking of Alu-
American National Standards Institute (ANSI) Schedule Num-
minum Products
bers.
B 807 Practice for Extrusion Press Solution Heat Treatment
3.1.2 extruded structural tube—a hollow product having a
of Aluminum Alloys
round cross section and a uniform wall thickness, brought to
E 29 Practice for Using Significant Digits in Test Data to
1 3
This specification is under the jurisdiction of ASTM Committee B07 on Light Annual Book of ASTM Standards, Vol 14.02.
Metals and Alloys and is the direct responsibility of Subcommittee B07.03 on Annual Book of ASTM Standards, Vol 03.05.
Aluminum Alloy Wrought Products. Annual Book of ASTM Standards, Vol 01.01.
Current edition approved May 10, 2000. Published August 2000. Originally Annual Book of ASTM Standards, Vol 03.06.
published as B 429–65T. Last previous edition B 429–95. Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
Annual Book of ASTM Standards, Vol 02.02. Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
B 429
A,B,C
TABLE 1 Chemical Composition Limits
D
Alloy
Other Elements
Desig- Silicon Iron Copper Manganese Magnesium Chromium Zinc Titanium Aluminum
E
Each Total
nation
6061 0.40–0.8 0.7 0.15–0.40 0.15 0.8–1.2 0.04–0.35 0.25 0.15 0.05 0.15 remainder
6063 0.20–0.6 0.35 0.10 0.10 0.45–0.9 0.10 0.10 0.10 0.05 0.15 remainder
A
Limits are in percent maximum unless shown as a range.
B
Analysis shall be made for the elements for which limits are shown in this table.
C
To determine conformance to these limits, an observed value or a calculated value obtained from analysis shall be rounded-off to the nearest unit in the last right-hand
place of the figures used in expressing the specified limit, in accordance with the rounding method of Practice E 29.
D
Others includes all unlisted metallic elements. The producer may analyze samples for trace elements not specified in the specification. However, such analysis is not
required and may not cover all metallic Others elements. Should any analysis by the producer or the purchaser establish that an Others element exceeds the limit of Each
or that the aggregate of several Others elements exceeds the limit of Total, the material shall be considered nonconforming.
E
Other Elements—Total shall be the sum of unspecified metallic elements 0.010 % or more, rounded to the second decimal before determining the sum.
final dimensions by extruding through a bridge-type die or by set forth in this specification where such inspections are
similar methods, at the option of the producer. deemed necessary to ensure that material conforms to pre-
scribed requirements.
4. Ordering Information
7.2 Lot Definition—An inspection lot shall consist of an
4.1 Orders for material to this specification shall include the identifiable quantity of material of the same mill form, alloy,
temper, and nominal dimensions traceable to a heat-treat lot or
following information:
4.1.1 This specification designation (which includes the lots, and subjected to inspection at one time.
number, the year, and the revision letter, if applicable),
8. Chemical Composition
4.1.2 Quantity in pieces, pounds, or feet,
8.1 Limits:
4.1.3 Size and schedule number for pipe; outside diameter
8.1.1 The material shall conform to the chemical composi-
and wall thickness for extruded tube (see tables in Appendix
tion limits prescribed in Table 1. The producer shall determine
X1) and length in feet,
conformance by analyzing samples taken when the ingots are
4.1.4 Alloy (Section 8) and temper (Section 9),
poured, or analyzing samples taken from the finished or
4.2 Additionally, orders for material to this specification
semifinished product. If the producer has determined the
shall include the following information when required by the
chemical composition of the material during the course of
purchaser:
manufacture, he shall not be required to sample and analyze the
4.2.1 Whether inspection or witness of inspection and tests
finished product.
by the purchaser’s representative is required prior to material
shipment (Section 13),
NOTE 2—It is standard practice in the United States aluminum industry
4.2.2 Whether certification of the material by the manu-
to determine conformance to the chemical composition limits prior to
facturer is required (Section 15),
further processing of ingots into wrought products. Due to the continuous
4.2.3 Whether marking for identification is required (Sec- nature of the process, it is not practical to keep a specific ingot analysis
identified with a specific quantity of finished material.
tion 16), and
4.2.4 Whether Practices B 660 applies and, if so, the levels
8.2 Number of Samples—The number of samples taken for
of preservation, packaging, and packing required (Section 17).
determination of chemical composition shall be as follows:
8.2.1 When samples are taken at the time the ingots are
5. Materials and Manufacture
poured, at least one sample shall be taken for each group of
5.1 The pipe or tube may be produced by extrusion through
ingots poured simultaneously from the same source of molten
a bridge-type die or by other methods at the option of the
metal.
producer, provided that the resulting products comply with the
8.2.2 When samples are taken from the finished or semi-
requirements in this specification.
finished product, a sample shall be taken to represent each
4000 lb (1814 kg), or fraction thereof, of material in the lot,
6. Special Characteristics
except that not more than one sample shall be required per
6.1 Unless otherwise specified, the pipe or tube shall be
piece.
supplied with square-cut ends. 8.3 Methods of Sampling—Samples for determination of
chemical composition shall be taken in accordance with one of
7. Responsibility for Quality Assurance
the following methods:
7.1 Responsibility for Inspection and Tests—Unless other- 8.3.1 Samples for chemical analysis shall be taken from the
wise specified in the contract or purchase order, the producer is material by drilling, sawing, milling, turning, or clipping a
responsible for the performance of all inspection and test representative piece or pieces to obtain a weight of prepared
requirements specified herein. Except as otherwise specified in sample not less than 75 g. Sampling shall be in accordance
the contract or order, the producer may use his own or any with Practice E 55.
other suitable facilities for the performance of the inspection 8.3.2 Sampling for spectrochemical analysis shall be in
and test requirements specified herein, unless disapproved by accordance with Practices E 716. Samples for other methods of
the purchaser at the time the order is placed. The purchaser analysis shall be suitable for the form of material being
shall have the right to perform any of the inspections and tests analyzed and the type of analytical method used.
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
B 429
A,B,C
TABLE 2 Tensile Property Limits
Table
No. Title
Elongation
Tensile Yield
in2 in. or
Alloy Specified Wall Strength, Strength,
12.1 Diameter, Round Extruded Tube Except for T3510, T4510,
4 3 Di-
Temper Thickness, in. min, ksi min, ksi
T6510, T73510, T76510, and T8510 Tempers
ameter,
D
(MPa)° (MPa)
E
12.3 Wall Thickness, Round Extruded Tube
min, %
12.5 Length, Round Extruded Tube
up thru 0.249 12.7 Straightness, Round Extruded Tube in Straight Lengths
38.0 (262) 35.0 (241) 8
6061-T6
0.250 and over
16.1 Outside Diameter, Pipe
H 38.0 (262) 35.0 (241) 10
16.2 Wall Thickness, Pipe
up thru 0.124 16.3 Weight, Pipe
30.0 (207) 25.0 (172) 8
0.125–1.000
16.4 Length, Pipe
H 30.0 (207) 25.0 (172) 10
6063-T6
16.5 Straightness, Pipe
A
11.2 The maximum and minimum wall thicknesses, outside
To determine conformance to this specification, each value for tensile strength
and for yield strength shall be rounded-off to the nearest 0.1 ksi and each value for
diameters and nominal weights of standard sizes of pipe are
elongation to the nearest 0.5 percent, both in accordance with the rounding-off
shown in Table 3.
method of Practice E 29.
B
Specimens shall be tested parallel to the direction of working.
C
12. General Quality
The basis for establishment of mechanical property limits is shown in Annex
A1.
12.1 The pipe or tube shall be supplied in the mill finish,
D
For explanation of the SI unit MPa, see Appendix X2.
E
with plain ends, and shall be of uniform quality and temper,
Elongation of full-section and cut-out sheet-type specimens is measured in 2
in.; of cut-out round specimens, in 4 3 specimen diameter.
sound and free from injurious defects. Discoloration that is
characteristic of proper solution heat treatment shall not be
cause for rejection.
8.4 Methods of Analysis—The determination of chemical
12.2 Each length of pipe and tube shall be examined to
composition shall be made in accordance with suitable chemi-
determine conformance to this specification with respect to
cal (Test Methods E 34), spectrochemical (Test Methods
general quality and identification marking. On approval of the
E 227, E 607, and E 1251), methods. Other methods may be
purchaser, however, the producer may use a system of statis-
used only when no published ASTM method is available. In
tical quality control for such examinations.
case of dispute, the methods of analysis shall be agreed upon
13. Source Inspection
between the producer and purchaser.
13.1 If the purchaser desires that his representative inspect
9. Tensile Properties
or witness the inspection and testing of the material prior to
shipment, such agreement shall be made by the purchaser and
9.1 Limits—The material shall conform to the tensile prop-
producer as part of the purchase contract.
erty requirements specified in Table 2.
13.2 When such inspection or witness of inspection and
9.2 Number of Specimens:
testing is agreed upon, the producer shall afford the purchaser’s
9.2.1 For material having a nominal weight of less than 1
representative all reasonable facilities to satisfy him that the
lb/linear ft (1.7 kg/linear m) one tension test specimen shall be
material meets the requirements of this specification. Inspec-
taken for each 1000 lb (454 kg) or fraction thereof in the lot.
tion and tests shall be conducted so there is no unnecessary
9.2.2 For material having a nominal weight of 1 lb or
interference with the producer’s operations.
more/linear ft, one tension test specimen shall be taken for each
1000 ft (305 m) or fraction thereof in the lot. 14. Retest and Rejection
9.2.3 Other procedures for selecting samples may be em-
14.1 If any material fails to conform to all of the applicable
ployed if agreed upon by the producer and the purchaser.
requirements of this specification, it shall be cause for rejection
9.3 Test Specimens—Geometry of test specimens and the
of the inspection lot.
location in the product from which they are taken shall be as 14.2
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