ASTM B241/B241M-02

ASTM B241/B241M-02 - 10.10.2002

1. Scope

1.1 This specification covers aluminum and aluminum-alloy seamless pipe in the alloys (Note 1) and tempers shown in Table 1 [Table 2] and extruded round seamless 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.

Note 1—Throughout this specification, use of the term alloy,in the general sense, includes aluminum as well as aluminum alloy.

Note 2—For other seamless drawn tubes, see Specification B 210 or Specification B 483. For extruded tube see Specification B 221, and for structural pipe and tube see Specification B 429.

1.2 Alloy and temper designations are in accordance with ANSI H35.1 and H35.1M. The equivalent Unified Numbering System alloy designations are those of Table 5preceded by A9, for example, A91100 for aluminum 1100 in accordance with Practice E 527.

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 or SI units are to be regarded separately as standard. The SI units are shown either in brackets or in separate tables. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems will result in nonconformance with this specification.

2. Referenced Documents

B594-19(2025)	Standard Practice for Ultrasonic Inspection of Aluminum-Alloy Wrought Products
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
B648-23	Standard Test Method for Indentation Hardness of Aluminum Alloys by Means of a Barcol Impressor
B557-15(2023)	Standard Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products
B557M-15(2023)	Standard Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products (Metric)
B483/B483M-21	Standard Specification for Aluminum and Aluminum-Alloy Drawn Tube and Drawn Pipe for General Purpose Applications
B660-23	Standard Practices for Packaging/Packing of Aluminum and Magnesium Products
B429/B429M-20	Standard Specification for Aluminum-Alloy Extruded Structural Pipe and Tube
B210M-12	Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes (Metric) (Withdrawn 2019)
B221-21	Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
B221M-21	Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes (Metric)
B234-17(2025)	Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes for Surface Condensers, Evaporators, and Heat Exchangers
B234M-17(2025)	Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes for Surface Condensers, Evaporators, and Heat Exchangers (Metric)
B210-12	Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes
B985-24	Standard Practice for Sampling Aluminum Ingots, Billets, Castings and Finished or Semi-Finished Wrought Aluminum Products for Compositional Analysis
B918-01	Standard Practice for Heat Treatment of Wrought Aluminum Alloys
B945-21	Standard Practice for Aluminum Alloy Extrusions Press Cooled from an Elevated Temperature Shaping Process for Production of T1, T2, T5 and T10-Type Tempers
E18-25	Standard Test Methods for Rockwell Hardness of Metallic Materials
B666/B666M-20	Standard Practice for Identification Marking of Aluminum and Magnesium Products
B807/B807M-20	Standard Practice for Extrusion Press Solution Heat Treatment for Aluminum Alloys
B881-25a	Standard Terminology Relating to Aluminum- and Magnesium-Alloy Products (Includes all amendments and changes 1/8/2026).
H35.1/H35.1(M)
H35.2	Dimensional Tolerances for Aluminum Mill Products
	Dimensional Tolerances for Aluminum Mill Products [Metric]
D10.7	Recommended Practices for Gas Shielded Arc Welding of Aluminumnd Aluminum-Alloy Pipe
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.
MIL-STD-129	Marking for Shipment and Storage
AMS 2772
CEN EN 14242	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.
E34-11	Standard Test Methods for Chemical Analysis of Aluminum and Aluminum-Base Alloys
E527-23	Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E607-02	Standard Test Method for Atomic Emission Spectrometric Analysis Aluminum Alloys by the Point to Plane Technique Nitrogen Atmosphere
E716-16(2021)e2	Standard Practices for Sampling and Sample Preparation of Aluminum and Aluminum Alloys for Determination of Chemical Composition by Spark Atomic Emission Spectrometry (Includes all amendments and changes 9/7/2022).
E1004-23	Standard Test Method for Determining Electrical Conductivity Using the Electromagnetic (Eddy Current) Method
E1251-25	Standard Test Method for Analysis of Aluminum and Aluminum Alloys by Spark Atomic Emission Spectrometry
G47-26	Standard Test Method for Determining Susceptibility to Stress-Corrosion Cracking of 2XXX and 7XXX Aluminum Alloy Products

B36.10
B647-23	Standard Test Method for Indentation Hardness of Aluminum Alloys by Means of a Webster Hardness Gage