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1.1 This specification covers ductile iron castings for pressure-retaining parts for use at elevated temperatures. Castings of all grades are suitable for use up to 450F. For temperatures above 450F and up to 650F, only Grade 60-40-18 castings are suitable (Note 0).
1.2 Valves, flanges, pipe fittings, pumps, and other piping components are generally manufactured in advance and supplied from stock by the manufacturer, jobber, or dealer.
1.3 For supplemental casting requirements Specification A 834 may be utilized.
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 shall be used independently of the other. Combining values from the two systems may result in nonconformance to the specification.
Note 1—For service other than as specified in this section, reference should be made to Specification A 536 for Ductile Iron Castings.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A247 Test Method for Evaluating the Microstructure of Graphite in Iron Castings
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A536 Specification for Ductile Iron Castings
A732/A732M Specification for Castings, Investment, Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
A834 Specification for Common Requirements for Iron Castings for General Industrial Use
E8 Test Methods for Tension Testing of Metallic Materials
E10 Test Method for Brinell Hardness of Metallic Materials
E186 Reference Radiographs for Heavy-Walled (2 to 412-in. (50.8 to 114-mm)) Steel Castings
E280 Reference Radiographs for Heavy-Walled (412 to 12-in. (114 to 305-mm)) Steel Castings
E446 Reference Radiographs for Steel Castings Up to 2 in. (50.8 mm) in Thickness
E689 Reference Radiographs for Ductile Iron Castings
E1806 Practice for Sampling Steel and Iron for Determination of Chemical Composition
F1476 Specification for Performance of Gasketed Mechanical Couplings for Use in Piping Applications
F1548 Specification for Performance of Fittings for Use with Gasketed Mechanical Couplings Used in Piping Applications
Manufacturers Standardization Society of the Valve and Fittings Industry StandardSP25 Standard Marking Systems for Valves, Flanges, Pipe Fittings, and Unions
ICS Number Code 77.140.80 (Iron and steel castings)
UNSPSC Code 31100000(Castings and casting assemblies)