Tungsten Alloy Barrel
As we all know dart mainly used in sports consist of four parts - flight , shaft, barrel and point. What’s more ,tungsten barrel forms the main part of a dart. Nowadays tungsten alloy barrel billet is widely used as the standard barrel materials,(tungsten heavy alloy WNiFe or copper tungsten WCu) for it has a specific gravity of 19.3 ,making it a very dense materials with small volum. plus superior wearing resistance ,well machinability, etc , that’s why tungsten alloy material contribute to a good dart barrel.
| Billet Size [DIA.(+0.05);L(+1.0)mm] | Content of W (%) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 65 | 70 | 75 | 80 | 85 | 90 | 95 | |||
| Density (+/-0.25g/cc) | |||||||||
| 13.20 | 13.90 | 14.60 | 15.40 | 16.00 | 16.90 | 18.00 | |||
| No | Inch | mm | Weight (+/-0.50g/pc) | ||||||
| 1 | Ø0.222x2.2 | Ø5.65x56.0 | 18.82 | 19.81 | 20.79 | 21.63 | 22.75 | 24.16 | 25.56 |
| 2 | Ø0.236x2.0 | Ø6.00x50.8 | 19.25 | 20.25 | 21.26 | 22.12 | 23.27 | 24.71 | 26.14 |
| 3 | Ø0.236x2.15 | Ø6.00x54.6 | 20.67 | 21.75 | 22.83 | 23.75 | 24.99 | 26.53 | 28.07 |
| 4 | Ø1/4x1.7 | Ø6.35x43.2 | 18.35 | 19.31 | 20.26 | 21.08 | 22.18 | 23.55 | 24.91 |
| 5 | Ø1/4x1.8 | Ø6.35x45.7 | 19.39 | 20.41 | 21.42 | 22.29 | 23.44 | 24.89 | 26.34 |
| 6 | Ø1/4x1.9 | Ø6.35x48.3 | 20.48 | 21.55 | 22.62 | 23.54 | 24.76 | 26.29 | 27.82 |
| 7 | Ø1/4x1.93 | Ø6.35x49.0 | 20.77 | 21.86 | 22.94 | 23.88 | 25.12 | 26.67 | 28.22 |
| 8 | Ø1/4x2.0 | Ø6.35x50.8 | 21.53 | 22.65 | 23.78 | 24.74 | 26.03 | 27.64 | 29.24 |
| 9 | Ø1/4x2.15 | Ø6.35x54.6 | 23.11 | 24.32 | 25.53 | 26.57 | 27.95 | 29.68 | 31.41 |
| 10 | Ø0.265x1.7 | Ø6.73x43.2 | 20.57 | 21.65 | 22.73 | 23.65 | 24.88 | 26.41 | 27.95 |
| 11 | Ø0.265x1.8 | Ø6.73x45.7 | 21.75 | 22.89 | 24.02 | 25.00 | 26.30 | 27.92 | 29.55 |
| 12 | Ø0.265x1.9 | Ø6.73x48.3 | 22.97 | 24.17 | 25.37 | 26.40 | 27.78 | 29.49 | 31.21 |
| 13 | Ø0.265x2.0 | Ø6.73x50.8 | 24.14 | 25.41 | 26.67 | 27.75 | 29.20 | 31.01 | 32.81 |
| 14 | Ø0.265x2.15 | Ø6.73x54.6 | 25.93 | 27.28 | 28.64 | 29.81 | 31.36 | 33.30 | 35.24 |
| 15 | Ø9/32x1.6 | Ø7.15x40.7 | 21.86 | 23.00 | 24.15 | 25.13 | 26.43 | 28.07 | 29.70 |
| 17 | Ø9/32x1.65 | Ø7.15x42.0 | 22.55 | 23.73 | 24.91 | 25.92 | 27.27 | 28.95 | 30.64 |
| 17 | Ø9/32x1.7 | Ø7.15x43.2 | 23.18 | 24.40 | 25.61 | 26.65 | 28.04 | 29.77 | 31.51 |
| 18 | Ø9/32x1.8 | Ø7.15x45.7 | 24.51 | 25.79 | 27.08 | 28.18 | 29.64 | 31.48 | 33.31 |
| 19 | Ø9/32x1.9 | Ø7.15x48.3 | 25.89 | 27.24 | 28.60 | 29.76 | 31.31 | 33.25 | 35.19 |
| 20 | Ø9/32x2.0 | Ø7.15x50.8 | 27.21 | 28.64 | 30.06 | 31.29 | 32.92 | 34.96 | 37.00 |
| 21 | Ø9/32x2.08 | Ø7.15x53.0 | 28.38 | 29.86 | 31.35 | 32.63 | 34.33 | 36.46 | 38.59 |
| 22 | Ø9/32x2.15 | Ø7.15x54.6 | 29.22 | 30.76 | 32.29 | 33.61 | 35.36 | 37.55 | 39.74 |
| 23 | Ø0.295x1.7 | Ø7.5x43.2 | 25.48 | 26.81 | 28.15 | 29.29 | 30.82 | 32.73 | 34.64 |
| 24 | Ø5/16x1.6 | Ø7.94x40.7 | 26.89 | 28.30 | 29.71 | 30.92 | 32.53 | 34.54 | 36.56 |
| 25 | Ø5/16x1.7 | Ø7.94x43.2 | 28.52 | 30.02 | 31.51 | 32.80 | 34.51 | 36.64 | 38.78 |
| 26 | Ø5/16x1.8 | Ø7.94x45.7 | 30.15 | 31.74 | 33.32 | 36.63 | 36.49 | 38.75 | 41.01 |
| 27 | Ø5/16x1.9 | Ø7.94x48.3 | 31.85 | 33.53 | 35.20 | 36.63 | 38.55 | 40.94 | 43.33 |
| 28 | Ø5/16x2.0 | Ø7.94x50.8 | 33.49 | 35.25 | 37.01 | 38.51 | 40.52 | 43.04 | 45.55 |
| 29 | Ø5/16x2.04 | Ø7.94x52.0 | 34.27 | 36.07 | 37.87 | 39.42 | 41.48 | 44.05 | 46.62 |
| 30 | Ø11/32x1.4 | Ø8.74x35.6 | 28.48 | 29.97 | 31.47 | 32.75 | 34.46 | 36.59 | 38.73 |
| 31 | Ø11/32x1.6 | Ø8.74x40.7 | 32.52 | 34.22 | 35.93 | 37.40 | 39.35 | 41.79 | 44.23 |
| 32 | Ø11/32x1.8 | Ø8.74x45.7 | 36.47 | 38.39 | 40.31 | 41.95 | 44.15 | 46.89 | 49.63 |
| 33 | Ø11/32x2.0 | Ø8.74x50.8 | 10.51 | 42.64 | 44.77 | 46.60 | 49.04 | 52.09 | 55.13 |