1.1 This specification covers stranded uninsulated bare, tin, or tin-lead alloy coated copper conductors in which wires in the strand are metallically bonded together by the application of heat or additional tin, or tin-lead alloy for use in hookup wire for electronic equipment. 1.2 The SI values for density and resistivity are to be regarded as standard. For all other properties, the inch-pound values are to be regarded as the standard and the SI units may be approximate. 1.3 The hazard caveat pertains only to Section 6 of this specification. 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 limitations prior to use.