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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
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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.

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

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, 4Ă— 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 Ă— 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

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 4Ă— 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 5Ă— 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

SDO ASTM: ASTM International
Document Number B345
Publication Date Aug. 1, 2011
Language en - English
Page Count 9
Revision Level 11
Supercedes
Committee B07.03
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