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ASTM B241 / B241M - 12


ASTM B241 / B241M - 12 Standard Specification for Aluminum and Aluminum-Alloy Seamless Pipe and Seamless Extruded Tube


Active Standard ASTM B241 / B241M Developed by Subcommittee: B07.03 |Book of Standards Volume: 02.02

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ASTM B241 / B241M

Abstract

This specification covers aluminum and aluminum-alloy seamless pipe and seamless extruded tube. The pipe and tube shall be produced from hollow extrusion ingot (cast in hollow form, or drilled, or pierced from solid ingot) and shall be extruded by use of the die and mandrel method. The material 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. Alloys 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. The stress-corrosion cracking test shall be performed on extruded tube. The stress-corrosion test shall be made in accordance with test method G 47. The aluminum alloy coating of clad tube shall comprise the inside surface (only) of the tube and its thickness shall be approximately 10 % of the total wall thickness of the tube.

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. Scope

1.1 This specification2 covers aluminum and aluminum–alloy seamless pipe in the alloys (Note 1) and tempers shown in Table 1 [Table 2] and seamless extruded round tube in the alloys and tempers shown in Table 3 [Table 4] intended for pressure applications. The standard sizes for seamless pipe are listed in Table 16.7 of ANSI H35.2 and H35.2M. Nonstandard alloys, tempers, and sizes of pipe are produced as seamless extruded tube.

TABLE 1 Tensile Property Limits for Pipe, Inch-Pound UnitsA,B

Alloy

Temper

Pipe Size,
in.

Tensile Strength,
min, ksi

Yield Strength
(0.2 % Offset),
min, ksi

Elongation in
2 in. or 4 × 
Diameter, min, %C

3003

H18

Under 1

27.0

24.0

 4

 

H112

1 and over

14.0

 5.0

25

6005

 T1

All

25.0

15.0

16

 

 T5

All

38.0

35.0

8

6005A

 T1

All

25.0

14.5

15

 

 T5

All

38.0

31.0

7

 

 T61

Under 0.250

38.0

35.0

8

 

 

0.250-1.000

38.0

35.0

10


6041

T6

All

45.0

40.0

10

6042

T5, T5511

All

38.0

35.0

10

6061

T6 (Extruded)

Under 1

38.0 

35.0

 8

 

 

1 and over

38.0

35.0

10D

 

T6 (Drawn)

Under 1

42.0

35.0

  8E

 

 

1 and over

38.0

35.0

 10F

6063

T6

All

30.0

25.0

 8

6064

T6

All

42.0

38.0

10

6082

T6

All

45.0

38.0

8

6105

T1

All

25.0

15.0

16

 

T5

All

38.0

35.0

8

6262

T6

All

38.0

35.0

10

6351

T5

All

38.0

35.0

10D

 

T6

All

42.0

37.0

10G

A The basis for establishment of tensile property limits is shown in Annex A1.
B For purposes of determining conformance with this specification, each value for tensile strength and yield strength shall be rounded to the nearest 0.1 ksi, and each value for elongation shall be rounded to the nearest 0.5 %, both in accordance with the rounding-off method of Practice E29.
C Elongation of full-section and cut-out sheet-type specimens is measured in 2 in.; of round specimens, in 4 × specimen diameter.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

B210 Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes

B221 Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

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)

B594 Practice for Ultrasonic Inspection of Aluminum-Alloy Wrought Products for Aerospace Applications

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

B945 Practice for Aluminum Alloy Extrusions Press Cooled from an Elevated Temperature Shaping Process for Production of T1, T2, T5 and T10-Type Tempers

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

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

E1004 Test Method for Determining Electrical Conductivity Using the Electromagnetic (Eddy-Current) Method

E1251 Test Method for Analysis of Aluminum and Aluminum Alloys by Spark Atomic Emission Spectrometry

G47 Test Method for Determining Susceptibility to Stress-Corrosion Cracking of 2XXX and 7XXX Aluminum Alloy Products

ANSI Standards

H35.2(M) Dimensional Tolerances for Aluminum Mill Products [Metric]

Federal Standard

Fed.Std.No.123 Marking for Shipment (Civil Agencies) Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://dodssp.daps.dla.mil.

Military Standard

MIL-STD-129 Marking for Shipment and Storage

AMS Specification

AMS2772 Heat Treatment of Aluminum Alloy Raw Materials Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http://www.sae.org.

CEN EN Standards

CENEN14242 Aluminum and Aluminum Alloys. Chemical analysis. Inductively coupled plasma optical emission spectral analysis Available from European Committee for Standardization (CEN), 36 rue de Stassart, B-1050, Brussels, Belgium, http://www.cenorm.be.



Keywords

aluminum alloy; seamless extruded tube; seamless pipe ;



ICS Code

ICS Number Code 77.150.10 (Aluminium products)



DOI: 10.1520/B0241_B0241M-12

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