ASTM B241/B241M-10 pdf free download.Standard Specification for Aluminum and Aluminum-Alloy Seamless Pipe and Seamless Extruded Tube.
1.1 This specification2 covers aluminum and aluminum—alloy seamless pipe in the alloys (Note I) and tempers shown in Table I [Table 2] and seamless extruded round tube in the alloys and tempers shown in Table 3 fTahle 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.
5. Materials and Manufacture
5.1 The pipe and tube shall he produced from hollow extrusion ingot (cast in hollow form, or drilled, or pierced from solid ingot) and shall he extruded by use of the die and mandrel method. Pipe and tube may he subsequently cold drawn at the option of the producer.
6. Quality Assurance
6. 1 Responsibility for Inspection and Tests—Unless otherwise specified in the contract or purchase order, the producer is responsible for the performance of all inspection and test requirements specified herein. The producer may use his own or any other suitable facilities for the performance of the inspection and test requirements specified herein, unless disapproved by the purchaser in the order or at the time of contract signing. The purchaser shall have the right to perform any of the inspections and tests set forth in this specification where such inspections and tests are deemed necessary to ensure that material conforms to prescribed requirements.
6.2 Lot Definition—An inspection lot shall be defined as follows:
6.2.1 For heat-treated tempers. an inspection lot shall consist of an identifiable quantity of material of the same mill form, alloy, temper, and nominal dimensions traceable to a heat-treat lot or lots, and subjected to inspection at one time.
6.2.2 For non-heat treated tempers, an inspection lot shall consist of an identifiable quantity of material of the same mill form alloy, temper, and nominal dimensions subjected to inspection at one time.
7. Chemical Composition
7. 1 Limits—The pipe or tube shall conform to the chemical composition limits specified in Table 1. Conformance shall be determined by the producer. by taking samples in accordance with E716, when the ingots are poured. and analyzing those samples in accordance with E607. E1251, E34 or EN 14242. At least one sample shall be taken for each group of ingois poured simultaneously from the same source of molten metal. If the producer has determined the chemical composition during pouring of the ingots, they shall not he required to sample and analyze the finished product.
7.2 If it becomes necessary to analyze the finished or semifinished product for conformance to chemical composition limits, the method used to sample the finished or semifinished product for the determination of chemical composition shall he by agreement between the producer and the purchaser. Analysis shall be performed in accordance with E7 16, E607. E1251, E34 or EN 14242 (ICP method). The number of samples taken for determination of chemical composition shall be as follows:
7.2.1 When samples are taken from pipe or tube, a sample shall be taken to represent each 4000 lb 12000 kgl or fraction thereof of material in the shipment. except thai not more than one sample shall be required per piece.ASTM B241/B241M pdf download.