1.1 This specification covers tinned, round, soft or annealed copper wire for electrical purposes. 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 This specification covers tinned, round, soft, or annealed copper wire for electrical purposes. The tinned wire shall conformto the required tensile strength and elongation. Electrical resistivity shall be measured. The wire sizes shall be expressed as