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Tungsten Wire

Item: Tungsten Wire
Standard: ASTM F288
Density:19.3g/cm³
Material: W1, W2.
Purity: W≥99.95%
The resistivity: 5.3*10^-8.
MOQ: kgs
Payment: T/T

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Product Introduction

Description

Tungsten is a very high-density refractory metal that is very resistant to corrosion. Tungsten has the highest melting point and highest tensile strength among many elements, with extremely low vapor pressure even at high temperatures. Tungsten wire is used as filaments for lighting, electron tubes, electrodes, high-temperature furnace parts, and probe pins, Tungsten (W) offers exceptionally high strength and good electrical resistivity at very high temperatures.

Pure tungsten wire is ideal for many applications in the medical industry, it is commonly used in electrical applications as well such as making electron emitters. The tensile strength of it is extremely high and usually increases as the gauge (diameter) of the wire gets smaller. Unalloyed Tungsten is often regarded as being very difficult to machine and fabricate. Due to its high-temperature strength, tungsten can be used in many heating elements. Tungsten is a high-density refractory metal that is extremely resistant to corrosion. It has high-temperature strength and good electrical resistance. It is often used in medical applications as well as used in heating elements.

Tungsten round wire has a high melting point, high resistivity, good strength, and low vapor pressure, it is widely used for making incandescent filaments, the material is hard brittle, and difficult to process.

Specification

Diameter, mm	Diameter tolerance, %	Weight (200mm), mg	Length min, m
0.012−0.06	−	>0.44−10.91	700
0.06−0.1	−	>10.91−30.30	400
0.1−0.15	−	>30.30−68.18	250
0.15−0.2	−	>68.18−121.20	150
0.2−0.35	−	>121.20−371.19	100
0.35−0.7	±1.5−±2.5	−	same as 150g
0.7−1.8	±1.0−±2.0	−	same as 200g

Grade	W content, min, %	impurity elements, max, %	Single element impurity max, %
W1	99.95	0.05	0.01
W2	99.92	0.08	0.01

Finish: Smooth surface, free of splits.

Introduction of tungsten wire

The resistivity of it is 5.3*10^-8. Tungsten has a high melting point, high resistivity, good strength, and low vapor pressure. It is the best material for making incandescent filaments among all pure metals. But tungsten is hard and brittle, and it is difficult to process. When the current passes through the pure tungsten wire and is heated to a certain temperature, the resistance value of the tungsten round wire also increases to a certain value (generally, the resistance value of the metal wire increases with the temperature).

Irregular tungsten wire: by customer's requirements.

Straightness tungsten wire: For the tungsten straight wire thinner than 100μm, the vertical height of 500mm freely suspended wire should not be less than 450mm;

For the tungsten straight wire at or thicker than 100μm, the maximum arc height between pints with a distance of 100mm is 10mm;

Application: light bulbs as various luminous bodies, weaving gloves.