ASTM B241/B241M 2012 Edition, “Standard Specification for Aluminum and Aluminum-Alloy Seamless Pipe and Seamless Extruded Tube,” has just been released and is now available from Document Center Inc. in both paper and pdf format. This specification covers aluminum and aluminum-alloy seamless pipe and seamless extruded tube.
ASTM B241/B241M-12 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 ASTM-E 34) or spectrochemical (test methods ASTM-E 1251) methods. Alloys may be solution heat-treated and quenched at the extrusion press in accordance with practice ASTM-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 found in ASTM-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 ASTM-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.
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