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1.1 This specification covers a group of requirements that are mandatory requirements of the following steel casting specifications issued by ASTM. If the product specification specifies different requirements, the product specification shall prevail.

ASTM Designation Title of SpecificationA 27/A 27M Steel Castings, Carbon, for General ApplicationA 128/A 128MSteel Castings, Austenitic ManganeseA 148/A 148MSteel Castings, High-Strength, for Structural PurposesA 297/A 297M Steel Castings, Iron Chromium and Iron-Chromium-Nickel, Heat Resistant for General ApplicationA 447/A 447M Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service A 486/A 486MSteel Castings, for Highway BridgesA 494/A 494MCastings, Nickel and Nickel Alloy A 560/A 560MCastings, Chromium-Nickel Alloy A 743/A 743MCastings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application A 744/A 744M Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe ServiceA 747/A 747M Steel Castings, Stainless, Precipitation HardeningA 890/A 890M Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General ApplicationA 915/A 915MSteel Castings, Carbon and Alloy, Chemical Requirements Similar to Standard Wrought GradesA 958Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements Similiar to Standard Wrought GradesA 1002Castings, Nickel-Aluminum Ordered Alloy

1.2 This specification also covers a group of supplementary requirements that may be applied to the above specifications as indicated therein. These are provided for use when additional testing or inspection is desired and apply only when specified individually by the purchaser in the order.

1.3 The requirements of the individual material specification, and this general specification shall prevail in the sequence named.

1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. Inch-pound units are applicable for material ordered to Specification A 781 and SI units for material ordered to Specification A 781M.