Specification :

Changsha South Tantalum Niobium Co.,Ltd, specialize in the non ferrous metal such as Tantalum Niobium and their alloyed products.
Our main items are as follows:
Tantalum sputtering targets
Tantalum- tungsten Alloy targets
Material: RO5200, RO5400, RO5252(Ta-2.5W), RO5255(Ta-10W)
Size:
circular targets: Diameter 25mm up to 400mm x Thickness 3mm up to 28mm
rectangular targets: Thickness 1mm up to 12.7mm x Width up to 600mm x Length up to 2000mm
Purity: >=99.95% or 99.99%

Table 1: technology parameter
Grade 3N, 3N5, 4N, with Ta 99.99%min
Recrystallization 95%min
Grain size ASTM 4 or finer
Surface finish 16Rms max. or Ra 0.4 ( RMS64 or better)
Flatness 0.1mm or 0.15% max
Tolerance +/-0.010" on all dimensions
The Special sizes are available upon customer’s requirement.