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1.1 This specification covers castings made of ductile iron, also known as spheroidal or nodular iron, that is described as cast iron with the graphite substantially spheroidal in shape and essentially free of other forms of graphite, as defined in Terminology A 644.
1.2 The values stated in inch-pound units are to be regarded as the standard.
1.3 No precise quantitative relationship can be stated between the properties of the iron in various locations of the same casting or between the properties of castings and those of a test specimen cast from the same iron (see Appendix X1).
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A644 Terminology Relating to 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
E8 Test Methods for Tension Testing of Metallic Materials
Military StandardMIL-STD-129 Marking for Shipment and Storage
ICS Number Code 77.140.80 (Iron and steel castings)
UNSPSC Code 31101618(Ductile iron sand casting)