Products Features

Extreme high temperature stability, suitable for long-term working conditions below 1200℃

Pure niobium wire can still maintain a tensile strength of ≥320MPa in an 800℃ environment (2.5 times that of pure iron wire), has no obvious softening or embrittlement in a vacuum environment of 1200℃, and has a low thermal expansion coefficient (4.5×10⁻⁶/℃, 20-800℃). It can be used for long-term use in high-temperature furnace heating elements, thermocouple protection tubes, and other components.

Strong corrosion resistance, resistant to many types of industrial harsh media

It has corrosion resistance to non-oxidizing acids such as hydrochloric acid, sulfuric acid, and phosphoric acid, as well as molten alkali and liquid metal.

Controllable electrical/thermal performance, suitable for electronic and heating scenarios

The resistivity at room temperature is only 15.2μΩ·cm (lower than the 42μΩ·cm of titanium wire), and the current conduction loss is small. It can be used as a vacuum tube filament and an electrode for semiconductor coating equipment (to reduce heating losses); thermal conductivity 54.4W/(m・K), and is stable with temperature changes (the thermal conductivity at 800°C is ≤60W/(m・K)). It can accurately control the heat output of the heating element and is suitable for precision high-temperature sintering furnaces and semiconductor heat treatment equipment.

Products Specification

Purity	Nb1≥99.95%
Diameter	0.1mm-10mm, Customizable
Length	100mm-10000m, Customizable
Roundness	≥92%
Tensile Strength	≥480MPa
Melting point	2468℃
Density	8.57g/cm³
Ra	≤0.8μm
Thermal Conductivity	54.4W/(m・K)

Products Application

High-temperature heating element: 0.5-2mm wire is wound into a spiral heating tube (suitable for vacuum sintering furnaces below 1000°C), replacing platinum-rhodium alloy wire (cost reduction of 60%+), and without the high-temperature volatilization problem of platinum-rhodium alloy.

Thermocouple protection tube: Thin-walled protection tube made of 1-5mm wire (wall thickness 0.3-1mm), used to measure the temperature of molten metal (such as molten aluminum, molten zinc), resistant to molten metal erosion, and ensuring temperature measurement accuracy (error ≤ ±1°C).

Corrosion-resistant connectors: 2-8mm wire is used to make connecting bolts and guide wires in chemical reactors (adapted to hydrochloric acid and sulfuric acid reaction systems), without frequent replacement (service life ≥ 5 years);

Catalyst carrier: 0.1-0.5mm precision silk is woven into a mesh carrier, which supports the catalyst for organic synthesis reactions (such as hydrogenation reactions). It is resistant to corrosion by the reaction medium and does not chemically react with the catalyst.

Vacuum electronic device electrodes: 0.1-0.3mm precision wire is used to make the cathode support electrode of traveling wave tubes and klystrons. Low resistivity reduces current loss, and there is no oxidation failure in a vacuum environment.

Semiconductor coating target wire: 0.5-3mm wire is used as a conductive connector for sputtering targets (adapted to silicon wafer coating equipment). After surface gold plating, the contact resistance can be reduced (≤5mΩ) to ensure coating uniformity.

High-temperature structural auxiliary parts: 3-10mm thick wire is used to make lightweight support wires in high-temperature areas of the engine (such as around the combustion chamber). It still maintains sufficient strength at 1200°C (tensile strength ≥ 180MPa), and has a density lower than high-temperature alloys (such as Inconel 718 density of 8.22g/cm³, and pure niobium wire is lighter);

Spacecraft vacuum environment components: 0.2-1mm wire is used to make the micro transmission wire of the spacecraft attitude control system. There is no friction and oxidation in the vacuum environment, ensuring transmission accuracy (displacement error ≤ 0.01mm).