Tantalum wire can be divided into 3 categories according to the chemical purity: metallurgical tantalum wire, the purity is 99.0%Ta, high purity tantalum wire, the purity is 99.0％～99.9％Ta,super high purity tantalum wire, the purity is 99.9％～99.99％Ta.
Tantalum wire can be divided into 4 categories according to the performance: chemical corrosion resistance tantalum wire, high temperature resistance and high strength tantalum wire, anti oxygen and fragile tantalum wire, capacitor tantalum wire.
The capacitor tantalum wire can be divided into 3 categories according to the purpose: tantalum wire used for solid tantalum electrolytic capacitors, tantalum wire used for lead wire of a liquid tantalum electrolytic capacitor, tantalum wire used for capacitor with reliability index.
The capacitor tantalum wire is divided into 3 categories according to the state: soft state (M), tensile strength b=300 ~ 600MPa, half hard state(Y2), tensile strength b=600 ~ 1000MPa, hard state (Y), tensile strength b>1000MPa.
High anti oxygen and fragile tantalum wire can also be used for the production of tantalum capacitor foil, it also can work in the condition of potassium dichromate and sulfuric acid forming solution, in the high temperature of 772℃ and high flash fire voltage (350V). In addition, tantalum wire can also be used as a vacuum electron cathode emission source, ion sputtering and coating materials and so on.
