Some characteristics of tungsten:
•Tungsten has the highest melting point of all metals
• High strength at high temperatures
• Good conductivity for heat and electricity
• High absorption capacity for radioactive radiation and X-rays
Properties of bare Tungsten wire
Purity 99.95% W
Melting point 3410 °C
Density 19.17 g/cm3
Specific electrical 0.055 Ohm x mm2/m
resistance at 20 °C
Modulus of elasticity 410 kN/mm2at 20 °C
•Tungsten has the highest melting point of all metals
• High strength at high temperatures
• Good conductivity for heat and electricity
• High absorption capacity for radioactive radiation and X-rays
Properties of bare Tungsten wire
Purity 99.95% W
Melting point 3410 °C
Density 19.17 g/cm3
Specific electrical 0.055 Ohm x mm2/m
resistance at 20 °C
Modulus of elasticity 410 kN/mm2at 20 °C
| Trade Mark | W Min Content % | All Impurities Min Content % | Each Impurity Min Content % |
| WALl, WAL2 | 99.95 | 0.05 | 0.01 |
| W1 | 99.95 | 0.05 | 0.01 |
| W2 | 99.92 | 0.08 | 0.01 |
| Trade Mark | WAL1, WAL2 | W1, W2 | |
| Black Wire(μm) White Wire(μm) | (μm) | ||
Max Diameter or Min Diameter should conform to TABLE 1
| Max Diameter | 12 | 5 | 400 |
| Min diameter | 1800 | 350 | 1800 |
TABLE 1
Diameter and The Tolerance should conform to TABLE 2
TABLE 2
TABLE 2
| Diameter (μm) | Weight of 200mm length | Weight tolerance of 200mm length % | Diameter Tolerance % | ||||
| 0 Grade | Ⅰ rade | Ⅱ rade | 0 Grade | Ⅰ rade | Ⅱ rade | ||
| 5≤d≤12 | 0.075-0.44 | - | ±4 | ±5 | - | - | - |
| 12<d≤18 | >0.44-0.98 | - | ±3 | ±4 | -- | - | - |
| 18<d≤40 | >0.98-4.85 | ±2 | ±2.5 | ±3 | - | - | - |
| 40<d≤80 | >4.85-19.39±2 | ±2.0 | ±2.5 | - | -- | - | |
| 80<d≤300 | >19.39-272.71 | ±2 | ±1.5 | - | - | - | |
| 300<d≤350 | >272.71-371.19 | ±1.0 | ±1.5 | - | - | - | |
| 350<d≤ 500 | - | ±2 | ±2.0 | ±2.5 | |||
| 500 <d≤1800 | - | ±1.0 | ±1.5 | ±2.0 | |||
Chemical Analysis
| Trade Mark | W Min Content % | All Impurities Min Content % | Each Impurity Min Content % |
| WALl, WAL2 | 99.95 | 0.05 | 0.01 |
| W1 | 99.95 | 0.05 | 0.01 |
| W2 | 99.92 | 0.08 | 0.01 |
Surface Quality
The Tungsten wire is smooth, free of twists, bends, kinks, curls, and as free of dents, swaging marks, scratches, die marks, laps, seams, splits, slivers, inclusions, bumps, pits, grooves, cracks, and other physical defects Unless black finish is specified, all types of wire have a clean finish, free of graphite, grease, oil, and lubricants. Wire for hooks, supports, springs, anchors, and mesh have a bright smooth surface free of cracks holes, or craters. The requirements for straightness, and coiling and spooling are detailed as well.
The Tungsten wire is smooth, free of twists, bends, kinks, curls, and as free of dents, swaging marks, scratches, die marks, laps, seams, splits, slivers, inclusions, bumps, pits, grooves, cracks, and other physical defects Unless black finish is specified, all types of wire have a clean finish, free of graphite, grease, oil, and lubricants. Wire for hooks, supports, springs, anchors, and mesh have a bright smooth surface free of cracks holes, or craters. The requirements for straightness, and coiling and spooling are detailed as well.
Special sizes are available, please contact sales for inquiries.