ASTM A703/A703M-20 pdf free download

12-19-2020 comment

ASTM A703/A703M-20,Standard Specification for Steel Castings, General Requirements, for Pressure-Containing Parts.
5. Chemical Composition
5. 1 Chemical Analysis—Chemical analysis of materials covered by this specification shall be in accordance with Test Methods A751.
5.2 Heat Analysis—An analysis of each heat shall be made by the manufacturer to determine the percentages of the elements specified. The analysis shall be made from a test sample preferably taken during the pouring of the heat. When drillings are used, they shall be taken not less than 1/4 in. [6.4 mmj beneath the surface. The chemical composition thus determined shall he reported to the purchaser, or their representative, and shall conform to the. requirements in the individual specification for the grade being poured.
5.3 Pmduct Analysis—A product analysis may be made by the purchaser from material representing each heat. lot, or casting. The analysis shall be made on representative material. Due to the possibility of decarburization. samples for carbon analysis shall he taken no closer than ¼ in. [6.4 mm] to a cast surface, except that castings too thin for this shall be analyzed on representative material. The chemical composition thus determined shall meet the requirements specified in the applicable specification thr the grade involved, or shall be subject to rejection by the purchaser, except that the chemical composition determined for carbon and low-alloy steel and stainless steel castings may vary from the specified limits by the amounts shown in Table I and Table 2, respectively. The product analysis tolerances of Tables 1 and 2 are not applicable as acceptance crileria for heat analysis by the casting manufacturer. When comparing product and heat analysis for other than carbon and low-alloy steels and stainless steels, the reproducibility data R2, in Test Methods E353 or E354, as applicable, shall be taken into consideration.
6. Mechanical Test Methods
6.1 All mechanical tests shall he conducted in accordance with Test Methods and Definitions A370. When material is ordered to an M-suflix (SI units) standard, then in accordance with Test Methods A 1058.
6.2 Choice of testing track from the options listed in Test Methods A 1058 when material is ordered to an M-suflix (SI units) product standard should be identified by the purchaser in the ordering information, If the choice of test track is not specified in the order, then the default ASTM track shall be used as noted in Test Methods A 1058.

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