Tungsten is available with various properties tailored to meet your specific application needs, including exceptional strength, corrosion resistance, and electrical and thermal conductivity. These attributes make tungsten widely used in the following markets: aerospace, endoscopy, surgical robotics, vascular therapy, electronics, and high-temperature manufacturing.
We manufacture high-strength tungsten wire with tensile strengths exceeding 4,500 MPa [652 ksi] for diameters of 50 µm [0.00196 in] or less, ensuring optimal performance in demanding applications.
W-K Doped contains a small amount of potassium, enhancing the material's creep resistance and improving its performance under demanding conditions. This variant of tungsten is often used in applications requiring excellent high-temperature strength and stability over long periods.
Chemical composition
W-K Doped
|
Element |
Typical target range |
|
Tungsten (W) |
≥ 99.95% |
|
Potassium (K) |
10 - 100 ppm (by weight) |
|
Aluminum (Al) |
20 - 100 ppm (if used) |
|
Silicon (Si) |
20 - 100 ppm (if used) |
|
Oxygen |
Up to 0.01% depending on doping |
|
Total other metallic impurities |
≤ 0.05% |
Physical properties - Tungsten (ASTM F288 type 1A)
|
|
Metric | English |
|
Density |
19.25 g/cm³ | 0.696 lb/in³ |
|
Modulus of elasticity |
400 - 410 GPa | 58,000 - 59,000 ksi |
|
Electrical resistivity |
5.5 - 6.0 µΩ*cm | 5.5 - 6.0 µΩ*in |
|
Thermal conductivity |
173 W/(m*K) | 1200 BTU*in/(hr*ft²*°F) |
|
Coefficient of thermal expansion |
4.5 µm/(m*°C) | 2.5 µin/(in*°F) |
|
*Values calculated at 22 °C [72 °F] |
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Mechanical properties - Tungsten (ASTM F288 type 1A)
|
|
Metric | English |
|
Tensile strength |
550 - 700 MPa | 80,000 - 101,500 psi |
|
Yield strength |
350 - 450 MPa | 50,700 - 65,200 psi |
|
Elongation |
2 - 3% | 2 - 3% |
|
Hardness (Vickers) |
200 - 250 HV | 200 - 250 HV |
|
Poisson's ratio |
0.28 | 0.28 |
|
Fracture toughness (KIC) |
60 - 80 MPa*m½ | 55 - 73 ksi*in½ |
|
Modulus of resistance |
7 - 8 MPa | 1 - 1.16 ksi |
|
Values are typical and may not represent all diameters. Test method will affect results. All data represent results from a 25.4 cm [10 in] test gauge length. |
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