1.1 This specification establishes the requirements for copper and copper alloy rod, bar, and shapes intended for hot forging. The following coppers and copper alloys are involved: Copper UNS Nos. Copper Alloy UNS Nos. Copper Alloy EN 1412 Nos.         C11000 C27450 C49350 CW612N C14500 C27451 C49355 CW617N C14700 C27453 C49360     C28500 C61900     C35330 C62300     C36500 C63000     C37000 C63200     C37700 C64200     C46400 C64210     C46500 C65500     C46750 C67500     C48200 C67600     C48500 C69150     C48600 C69240     C49250 C69300     C49255 C70620     C49260 C71520     C49265 C77400     C49300 C87700     C49340 C87710     C49345     Note 1: Additional information about forging practice and forgings produced from these alloys is given in Appendix X1 and in Specification B283/B283M. 1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 This standard does not purport to address all of the safety concerns, if any, 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 requirements prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization establis