Grade: RO5200, RO5400(Ta1, Ta2) Purity: 99.95%( Max: 99.99%) Standard: ASTM B 708-05, GB/T3629-2006 Circular targets: Diameter (25-400)mm Thickness(3-28)mm Rectangular targets: Thickness(1-20)mm Width(10-1000)mm Length(200-2000) Recrystallization: ≥ 95% Surface finish: Ra 0.8 ~ 1.6 Flatness: 0.1mm or 0.10% Maximize the value Diameter tolerance: ±0.254mm Special requirements to be agreed on by the supplier and buyer of negotiations