1.1 This specification covers hot-wrought steel bars to be used for the manufacture of general-purpose springs such as coil, torsion, and leaf. 1.2 The values stated in inch-pound units are to be regarded as the standard This specification covers hot-wrought steel bars for the manufacture of general purpose springs such as coil, torsion, and leaf. The steel shall be melt processed by using open-hearth, basic-oxygen, or electric furnace. The materials shall undergo heat