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This specification covers aluminum and aluminum-alloy seamless pipe and seamless extruded tube for gas and oil transmission and distribution piping systems. The pipe and tube shall be produced from hollow extrusion ingot (cast in hollow form or pierced) and shall be extruded by use of the die and mandrel method. The pipe and tube shall conform to the chemical composition requirements specified. The determination of chemical composition shall be made in accordance with suitable chemical (test methods E 34), or spectrochemical (test methods E 227, E 607, and E 1251) methods. Heat treatment for the production of T1 and T5-type tempers shall be in accordance with Practice B 807, and for the production of T4 and T6-type tempers, except as noted, shall be in accordance with practice B 918. Unless otherwise specified, alloys 6061, 6063, and 6351 may be solution heat treated and quenched at the extrusion press in accordance with practice B 807 for the production of T4 and T6-type tempers, as applicable. The material shall conform to the tensile property requirements specified. The tension tests shall be made in accordance with test methods B 557 and B 557M. Pipe and tube heat treated at the extrusion press shall conform to all requirements specified.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers seamless pipe and seamless extruded tube in the aluminum and aluminum alloys (Note 1) and tempers listed in Table 1 and Table 2, respectively. Seamless pipe and seamless tube are intended for use in applications involving internal pressure.
Note 1—Throughout this specification use of the term alloy in the general sense includes aluminum as well as aluminum alloy.
Note 2—For drawn seamless tubes, see Specifications B210 and B210M; for extruded tubes, Specifications B221 and B221M; for drawn seamless tubes for condensers and heat exchangers, Specifications B234 and B234M; for seamless pipe and seamless extruded tube, B241/B241M; for round welded tubes, Specification B313/B313M; for seamless condenser and heat exchanger tubes with integral fins, Specification ; for extruded structural pipe and tube, Specification B429/B429M; and for drawn tube for general purpose applications, 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 3 preceded by A9, for example, A93003 for aluminum alloy 3003 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 either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
TABLE 1 Tensile Property Limits for Extruded Seamless PipeA,B
|Strength, min, ksi [MPa]||ElongationC,D|
|Tensile||Yield (0.2 % Offset)||in 2 in. [50 mm] or 4×|
Diameter, min, %
| in 5 × D |
|3003||H18||under 1||27.0 ||24.0 ||4||4|
|H112||1 and over||14.0 ||5.0 ||25||22|
|6061||T6||under 1||38.0 ||35.0 ||8||...|
|1 and over||38.0 ||35.0 ||10E||9|
|6063||T6||all||30.0 ||25.0 ||8||7|
|6351|| T5 |
A The basis for establishment of mechanical property limits is given in Annex A1 of this specification.
B To determine conformance to this specification, each value for tensile strength and for yield strength shall be rounded to the nearest 0.1 ksi [MPa] and each value for elongation to the nearest 0.5 %, both in accordance with the rounding method of Practice E29.
C Elongation of full-section and sheet-type specimens is measured in 2 in.; of cut-out round specimens, 4× specimen diameter.
D Elongations in 50 mm apply for pipe tested in full sections and for sheet-type specimens machined from material up through 12.5 mm in thickness having parallel surfaces. Elongations in 5 × D (at 5.65 ), where D and A are diameter and cross-sectional area of the specimen, respectively, apply to round test specimens machined from thicknesses over 6.30 mm.
E The minimum elongation for a wall thickness up through 0.249 in. [6.3 mm] is 8 %.
F For wall thickness 0.124 in. [3.20 mm] and less, the minimum elongation is 8 %.
TABLE 2 Tensile Property Limits for Extruded Seamless TubeA,B
|Temper|| Specified Wall|
Thickness, in. [mm]
|Area, in.2 [mm2]||Tensile Strength, ksi [MPa]||Yield Strength|
(0.2 % offset)
ksi [MPa], min
|min||max||in 2 in. [50 mm] or|
4 × D min,%
|in 5 × D |
| 8.5 |
| 14.0 |
| 2.5 |
| 14.0 |
|Alloy Alclad 3003F|
| 13.0 |
|up through 32.0 [20 000]|
up through 32.0 [20 000]
up through 32.0 [20 000]
| 16.0 |
|up through 32.0 [20 000]|
up through 32.0 [20 000]
up through 32.0 [20 000]
| 14.0  |
|OH||all||all||... [...]||22.0 ||16.0I [...]||16||14|
| || |
|T42J||all||all||26.0 ||... [...]||12.0 ||16||14|
|up through 0.249 [6.30]|
0.250 and over [6.30]
| 38.0 |
| ... [...]|
up through 0.500 [12.50]
| ... [...]|
| 19.0 |
|T4, T42L||up through 0.500 [12.50]||all||19.0 ||... [...]||10.0 ||14||12|
|0.501–1.000 [12.50–25.00]||all||18.0 ||... [...]||9.0 ||14 [...]||12|
|T5||up through 0.500 [12.50]||all||22.0 ||... [...]||16.0 ||8||7|
|0.501–1.000 [12.50–25.0]||all||21.0 ||... [...]||15.0 ||8 [...]||7|
|T52||up through 1.000 [25.00]||all||22.0 ||30.0 ||16.0M ||8||7|
|T6, T62L||up through 0.124 [3.20]||all||30.0 ||... [...]||25.0 ||8||...|
|0.125–1.000 [3.20–25.00]||all||30.0 ||... [...]||25.0 ||10||7|
|T6, T62L||up through 2.999||up through 32||48.0 ||... [...]||45.0 ||6||5|
up through 0.124
| ... [...]|
| 19.0 |
A The basis of establishment of mechanical property limits is given in Annex A1 of this specification.
B To determine conformance to this specification, each value for ultimate tensile strength and for yield strength shall be rounded to the nearest 0.1 ksi [MPa] and each value for elongation to the nearest 0.5 %, both in accordance with the rounding method of Practice E29.
C Elongation of full-section and sheet-type specimens is measured in 2 in.; of cut-out round specimens, in 4× specimen diameter.
D For material of such dimensions that a standard test specimen cannot be taken, or for material thinner than 0.062 in., the test for elongation is not required.
E Elongations in 50 mm apply for tube tested in full section and for sheet-type specimens machined from material up through 12.5 mm in thickness having parallel surfaces. Elongations in 5× diameter (5.65 ), where D and A are diameter and cross-sectional area of the specimen, respectively, apply to round test specimens machined from thickness over 6.30 mm. For tube of such dimensions that a standard test specimen cannot be taken, the test for elongation is not required.
F These alloys are also produced in the F temper, for which no mechanical properties are specified.
G Maximum tensile strength and minimum elongation apply to tubes having diameters from 1.000 in. to 4.500 in. and wall thickness from 0.050 in. to 0.169 in. only. Minimum elongation applies to tubes having diameters from 25.00 to 115.00 mm and wall thickness over 1.30 through 4.30 mm only.
H Upon heat treatment, annealed (0 temper) material shall be capable of developing the mechanical properties applicable to T42 temper material, and upon solution and precipitation heat treatment shall be capable of developing the mechanical properties applicable to T62 temper material.
I Yield strength is maximum [110 MPa] max.
J For stress-relieved tempers (T4510, T4511, T6510 and T6511) characteristics and properties other than those specified may differ somewhat from the corresponding characteristics and properties of material in the basic temper.
K Formerly designated T42 temper. Properly aged precipitation heat-treated 6063-T1 extruded products are designated T5.
L While material in the T42 and T62 tempers is not available from the material producer, the properties are listed to indicate those which can usually be obtained by the user when the material is properly solution heat treated or solution and precipitation heat treated from the O (annealed) or F (as-fabricated) tempers. These properties apply when samples of material supplied in the O or F temper are heat treated by the producer to the T42 or T62 tempers to determine that the material will respond to proper thermal treatment. Properties attained by the user, however, may be lower than those listed if the material has been formed or otherwise cold or hot worked, particularly in the annealed temper, prior to solution heat treatment.
M Maximum yield strength is 25.0 ksi [170 MPa].
TABLE 3 Chemical CompositionA,B,C
|Alclad 3003||3003 alloy clad inside or outside with 7072 alloy|
|7072H||0.7 Si + Fe||0.10||0.10||0.10||...||0.8–1.3||...||...||0.05||0.15||remainder|
A Limits are in percent maximum unless shown as a range or stated otherwise.
B Analysis shall be made for the elements for which limits are shown in this table.
C For purposes of determining conformance to these limits, an observed value or a calculated value obtained from analysis shall be rounded to the nearest unit in the last right-hand place of figures used in expressing the specified limit, in accordance with the rounding method of Practice E29.
D Others includes listed elements for which no specific limit is shown as well as 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 non-conforming.
E Other Elements
F The aluminum content shall be calculated by subtracting from 100.00 % the sum of all metallic elements present in amounts of 0.010 % or more each, rounded to the second decimal before determining the sum.
G In 1965 the requirements for Alloy 6062 were combined with those of Alloy 6061 by revision of the minimum chromium content from 0.15 to 0.04. For this reason, Alloy 6062 was cancelled.
H Composition of cladding alloy as applied during the course of manufacture. The sample from finished tube shall not be required to conform to these limits.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B210 Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes
B210M Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes (Metric)
B221 Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
B221M Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes (Metric)
B234 Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes for Condensers and Heat Exchangers
B234M Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes for Condensers and Heat Exchangers (Metric)
B241/B241M Specification for Aluminum and Aluminum-Alloy Seamless Pipe and Seamless Extruded Tube
B313/B313M Specification for Aluminum and Aluminum-Alloy Round Welded Tubes
B404/B404M Specification for Aluminum and Aluminum-Alloy Seamless Condenser and Heat-Exchanger Tubes with Integral Fins
B429/B429M Specification for Aluminum-Alloy Extruded Structural Pipe and Tube
B483/B483M Specification for Aluminum and Aluminum-Alloy Drawn Tube and Pipe for General Purpose Applications
B557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products
B557M Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products (Metric)
B647 Test Method for Indentation Hardness of Aluminum Alloys by Means of a Webster Hardness Gage
B648 Test Method for Indentation Hardness of Aluminum Alloys by Means of a Barcol Impressor
B660 Practices for Packaging/Packing of Aluminum and Magnesium Products
B666/B666M Practice for Identification Marking of Aluminum and Magnesium Products
B807/B807M Practice for Extrusion Press Solution Heat Treatment for Aluminum Alloys
B918 Practice for Heat Treatment of Wrought Aluminum Alloys
E18 Test Methods for Rockwell Hardness of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E34 Test Methods for Chemical Analysis of Aluminum and Aluminum-Base Alloys
E55 Practice for Sampling Wrought Nonferrous Metals and Alloys for Determination of Chemical Composition
E227 Test Method for Optical Emission Spectrometric Analysis of Aluminum and Aluminum Alloys by the Point-to-Plane Technique
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E607 Test Method for Atomic Emission Spectrometric Analysis Aluminum Alloys by the Point to Plane Technique Nitrogen Atmosphere
E716 Practices for Sampling and Sample Preparation of Aluminum and Aluminum Alloys for Determination of Chemical Composition by Spectrochemical Analysis
E1251 Test Method for Analysis of Aluminum and Aluminum Alloys by Spark Atomic Emission Spectrometry
ANSI StandardsH35.2M Dimensional Tolerances for Aluminum Mill Products
American Welding Society StandardD10.7 Recommended Practices for Gas Shielded Arc Welding of Aluminum and Aluminum-Alloy Pipe Available from the American Welding Society, 2501 Northwest 7th St., Miami, FL 33125.
Military StandardMIL-STD-129 Marking for Shipment and Storage Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
Federal StandardFed.Std.No.123 Marking for Shipment (Civil Agencies)
ICS Number Code 23.040.15 (Non-ferrous metal pipes)
UNSPSC Code 40171507(Commercial aluminum pipe)
ASTM B345 / B345M-11, Standard Specification for Aluminum and Aluminum-Alloy Seamless Pipe and Seamless Extruded Tube for Gas and Oil Transmission and Distribution Piping Systems, ASTM International, West Conshohocken, PA, 2011, www.astm.orgBack to Top