ASME SB108 pdf download

ASME SB108 pdf download SPECIFICATION FOR ALUMINUM-ALLOY PERMANENT MOLD CASTINGS
3.1.1 permanent mold casting —— a metal object pro-duced by introducing molten metal by gravity or low pres-sure into a mold constructed of durable material，usuallyiron or steel, and allowing it to solidify.
3.1.2 seni-permanent mold casting – a permanentmold casting which is made using an expendable core suchas sand.
4.Ordering Information
4.1Orders for matefiamuation:s include the following information:
4.1.1This specification designation (which 1icaulesthe number. the year, and the revision letter, 1 appiaD，
4.1.2Alloy (see Section 7 and Table 1),
4.1.3Temper (See Section 1 1 and Table 2),4.1.4 Applicable drawing or part number,4.1.5The quantity in either pieces or pounds,4.2Additionally,orders for material to this specifica-tion shall include the following information when requiredby the purchaser:
4.2.1Whether yield strength tests are required (see11.1 and Table 2,Footnote F),
4.2.2Whether castings or test bars，or both, are tobe artificially aged for alloys 705.0-T5,707.O-T5,and713.0-T5 (see 11.3),
4.2.3 Whether test specimens cut from castings arerequired in addition to or instead of separately cast speci-mens (see Sections 11 and 15, and 13.2),
4.2.4Whether repairs are permissible (see Section1 8),
4.2.5Whether inspection is required at the produc-er’s works (see Section 19),
4.2.6Certification is required (see Section 23),4.2.7 Whether surface requirements will be checkedvisually or by observational standards where such stan-dards are established (see 20.1),
4.2.8 Whether liquid penetrant inspection is required(see 20.2),
4.2.9Whether radiographic inspection is required(see 20.3),
4.2.10 whether foundry control is required (see10.2), and
4.2.11Whether the material shall be packaged,ormarked, or both, in accordance with Practices B 660,MIL-STD-129, and Fed. Std. No. 123 (see 24.4).
5. Responsibility for Quality Assurance 5.1 Unless otherwise specified in the contract or pur- chase order, the producer shall be responsible for the per- formance ofall inspections and test requirements specified herein. Unless otherwise agreed upon, the producer may use his own or any other suitable facilities for the perform- ance of the inspection and test requirements specified herein. The purchaser shall have the right to perform any of the inspections and tests set forth in the specification where such inspections are deemed necessary to confirm that material conforms to prescribed requirements.
6. Materials and Manufacture
6.1 The responsibility of furnishing castings that can be laid out and machined to the finished dimensions within the permissible variations specified, as shown on the blue- prints or drawings, shall rest with the producer, except where mold equipment is furnished by the purchaser.
7. Chemical Composition
7.1 The castings shall conform to the chemical compo- sition limits prescribed in Table 1. Conformance shall be determined by the producer by analyzing samples at the timethecastings arepoured, orsamples takenfromcastings or tension test specimens representative of the castings. If the producer has determined the chemical composition of the material during the course of manufacture, he shall not be required to sample and analyze the finished product.
8. Sampling for Determination of Chemical Composition
8.1 A sample for determination of chemical composi- tion shall be taken to represent one of the following:
8.1.1 Not more than 4000 lb (1814 kg) of clean castings (gates and risers removed) or a single casting poured from one furnace.
8.1.2 The castings poured continuously from one furnace in not more than eight consecutive hours.
8.2 Samples fordetermination ofchemical composition shall be taken in accordance with one of the following methods:
8.2.1 Samples for Chemical Analysis — Samples for chemical analysis shall be taken by sawing, drilling, or milling the casting or test specimens in such a manner as to be representative of the material (Practice E 88). The weight of a prepared sample shall not be less than 75 g.
8.2.2 Samples for Spectrochemical and Other Meth- ods of Analysis — Samples for spectrochemical analysis shall be taken in accordance with Practices E 716. Samples for other methods of analysis shall be suitable for the form of material being analyzed and the type of analytical methods used.
9. Methods for Determination of Chemical Composition
9.1 The determination of chemical composition shall be made in accordance with suitable chemical (Test Meth- ods E 34), or spectrochemical (Test Methods E 227, E 607, and E 1251) methods. Other methods may be used only when no published ASTM method is available. In case of dispute, the method of analysis shall be agreed upon by the producer and the purchaser.