... . It is part of the refractory metals group and occurs naturally in the mineral tantalite, always together with the chemically ... niobium. Varnl specializes in manufacturing high performance Zirconium and its alloys for a good variety of ... rod, wire, tube and etc. 1. Zirconium ingot, billet, slab 2. Zirconium plate, sheet, foil, strip, ribbon Standards: ASTM B551, R60700 ...