ASME SB-26:2019 pdf download

ASME SB-26:2019 pdf download.Standard Specification for Aluminum-Alloy Sand Castings
1. Scope
1.1 This specification covers aluminum-alloy sand castings designated as shown in Table 1. 1.2 This specification is not intended for aluminum-alloy sand castings used in aerospace applications. 1.3 Alloy and temper designations are in accordance with ANSI H35.1/H35.1M. Unified Numbering System alloy des- ignations are in accordance with Practice E527. 1.4 Unless the order specifies the “M” specification desig- nation, the material shall be furnished to the inch-pound units. 1.5 For acceptance criteria for inclusion of new aluminum and aluminum alloys and their properties in this specification, see Annex A1 and Annex A2. 1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility ofregulatory limitations prior to use.
4. Ordering Information
4.1 Orders for material under this specification shall include the following information (1.4 and 1.5): 4.1.1 This specification designation (which includes the number, year, and revision letter, if applicable), N OTE 1—For inch-pound application, specify Specification B26 and for metric application specify Specification B26M. Do not mix units. 4.1.2 The quantity in either pieces or pounds [kilograms], 4.1.3 Alloy (Section 7 and Table 1), 4.1.4 Temper (Section 10 and Table 2), and 4.1.5 Applicable drawing or part number, 4.2 Additionally, orders for material to this specification shall include the following information when required by the purchaser: 4.2.1 Whether chemical analysis and tensile property re- ports are required (Table 1 and Table 2), 4.2.2 Whether castings or test bars, or both, may be artifi- cially aged for Alloys 705.0-T5, 707.0-T5, 712.0-T5, and 713.0-T5 (10.2) and whether yield strength tests are required for these alloys;4.2.3 Whether test specimens cut from castings are required in addition to, or instead of, separately cast specimens (Sec- tions 10 and 13); 4.2.4 Whether repairs are permissible (16.1), 4.2.5 Whether inspection is required at the producer’s works (Section 18); 4.2.6 DELETED 4.2.7 Whether surface requirements shall be checked against observational standards where such standards are established (19.1); 4.2.8 Whether liquid penetrant inspection is required (19.2); 4.2.9 Whether radiographic inspection is required and, if so, the radiographic grade of casting required (19.3, Table 3); 4.2.10 Whether foundry control is required (Section 9); and 4.2.11 Whether Practice B660 applies and, if so, the levels of preservation, packaging, and packing required (23.4). 5. Quality Assurance 5.1 Unless otherwise specified in the contract or purchase order, the producer shall be responsible for the performance of all inspections and test requirements specified herein. Unless disapproved by the purchaser, the producer may use his own or any other suitable facilities for the performance of the inspec- tion and test requirements specified herein. The purchaser shall have the right to perform any of the inspections and tests set forth in this specification where such inspections are deemed necessary to confirm that the material conforms to prescribed requirements.
7. Chemical Composition
7.1 The Product shall conform to the chemical composition limits prescribed in Table 1. Conformance shall be determined by the producer by taking samples at the time castings are poured in accordance with Practice E716 and analyzed in accordance with Test Methods E607, E1251, or E34, or EN 14242. If the producer has determined the composition of the material during casting, they shall not be required to sample and analyze the finished product. 7.2 If it becomes necessary to analyze castings for confor- mance to chemical composition limits, the method used to sample castings for the determination of chemical composition shall be by agreement between the producer and the purchaser. Analysis shall be performed in accordance with Practice E716, Test Methods E607, E1251, or E34, or EN 14242 (ICP method). 7.3 Other methods ofanalysis or in the case of a dispute the method of analysis shall be agreed upon by the producer and the purchaser. 7.4 Asample for determining ofchemical composition shall be taken to represent the following: 7.4.1 Not more than 4000 lb [2000 kg] of clean castings (gates and risers removed) or a single casting poured from one furnace. 7.4.2 The maximum elapsed time between determinations shall be established for each alloy, but in any case the maximum elapsed time shall not exceed 8 h.