1.1 This specification covers ductile iron castings suitable for service at temperatures of -40°F and above.

1.2 The values stated in inch-pound units are to be regarded as the standard.

1.3 The following precautionary statement pertains only to the test methods portion, Section 11, of this specification: This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.