Grade: RO5200, RO5252(Ta-2.5W), RO5255(Ta-10W)
Purity: ≥ 99.95%
Executive standard: ASTM B365, ASTM F560
Density: 16.67g/cm3
Form: straight wire, coiled wire
State: hard state, semi hard state, annealed state
Applications of Tantalum wire
Capacitor grade tantalum wire is mainly used to make the anode lead
of tantalum electrolytic capacitor. The tantalum wire with the
smallest diameter is Φ 0.10mm. It can also be made into tantalum
yarn or tantalum mesh. Tantalum wire is the key material for making
tantalum capacitor. Tantalum capacitor is the best capacitor. About
65% of tantalum in the world is used in this field.
High oxygen resistant brittle tantalum wire can also be used to
make tantalum foil capacitors.
Tantalum wire also can be used to compensate muscle tissue, suture
nerves and tendons, and make vascular stents in medical.
Tantalum wire can be made heating parts of vacuum high temperature
furnace, used as vacuum electron cathode emission source, ion
sputtering and spraying materials.
Chemical Composition of Tantalum Wire
| Chemistry ppm |
| Designation | Chief component | Impurities maxmium |
| Ta | Nb | Fe | Si | Ni | W | Mo | Ti | O | C | H | N |
| Ta1 | Remainder | 300 | 40 | 30 | 20 | 40 | 40 | 20 | 150 | 40 | 15 | 20 |
| Ta2 | Remainder | 800 | 100 | 100 | 50 | 200 | 200 | 50 | 200 | 100 | 15 | 100 |
| TaNb3 | Remainder | <35000 | 100 | 100 | 50 | 200 | 200 | 50 | 200 | 100 | 15 | 100 |
| TaNb20 | Remainder | 170000-
230000 | 100 | 100 | 50 | 200 | 200 | 50 | 200 | 100 | 15 | 100 |
| Ta2.5W | Remainder | 400 | 50 | 30 | 20 | 30000 | 60 | 20 | 150 | 50 | 15 | 60 |
| Ta10W | Remainder | 400 | 50 | 30 | 20 | 110000 | 60 | 20 | 150 | 50 | 15 | 60 |
Specification of Tantalum Wire
| Diameter, inch (mm) | Tolerance, +/-inch (mm) |
| 0.010~0.020 excl (0.254~0.508) | 0.0005 (0.013) |
| 0.020~0.030 excl (0.508~0.762) | 0.00075 (0.019) |
| 0.030~0.060 excl (0.762~1.524) | 0.001 (0.025) |
| 0.060~0.090 excl (1.524~2.286) | 0.0015 ( 0.038) |
| 0.090~0.125 excl (2.286~3.175) | 0.002 (0.051) |
Specification of Other Tantalum Products
| Thickness (mm) | Width (mm) | Length (mm) |
| Foil | 0.05~0.1 | 30~150 | >=200 |
| Sheet | 0.1~0.5 | 30~500 | >=200 |
| Board | 0.5~15 | 50~1000 | >=200 |
