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1.1 This specification covers gray iron for castings suitable for pressure-containing parts for use at temperatures up to 650°F (350°C).
1.2 Classes of Iron:
1.2.1 Castings of all classes are suitable for use up to 450°F (230°C). For temperatures above 450°F and up to 650°F, only Class 40, 45, 50, 55, and 60 castings are suitable.
1.2.2 Castings of all clases are suitable for use up to 230°C. For temperatures above 230°C and up to 350°C, only Class 275, 300, 325, 350, 380, and 415 castings are suitable.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A644 Terminology Relating to Iron Castings
E8 Test Methods for Tension Testing of Metallic Materials
ICS Number Code 77.140.80 (Iron and steel castings)
UNSPSC Code 31101617(Grey iron sand casting)