1.1 This specification covers the chemical, mechanical, and metallurgical requirements for unalloyed tantalum plate, sheet, strip, rod, and wire used in the manufacture of surgical implants. 1.2 The values stated in inch- This specification covers the chemical, mechanical, and metallurgical requirements for unalloyed tantalum plate, sheet, strip, rod, and wire for the manufacture of surgical implants. Material covered by this specification shall be made from vacuum-arc