... R60704 (Zirconium-Tin alloy): Zr-1.5%Sn, Zr+Hf≥97.5 UNS R60705 (Zr5, Zirconium-Niobium alloy): Zr- ... 2.5%Nb, Zr+Hf≥95.5, O≤0.18 UNS R60706 (Zirconium-Niobium alloy ... ): Zr-2.5%Nb, Zr+Hf≥95.5, O≤0.16 For Nuclear Industry (Reactor grade ... , Hf ≤ 0.01%) UNS R60001 (Zr0): UNS R60802 (Zr2, Zircaloy2, ...