Hunan Boyun-Dongfang Powder Metallurgy Co., Ltd
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Tungsten Carbide hexil 30° ungrind Fixed Length Rods for Drilling tools
Our rods have different grade and right to use on different application; Specially we are produce the Nano Grain carbide (Grain＜0.2µm); Our rods are with high hardness and wear/corrosion resistance, all products with stable quality;
l Dimension: diameter from 6-20mm, length 330mm;
l with 30° helix holes rods;
Grade Information
| Grade | Co% | Grain Size of WC | Hardness |
Hardness |
Density | Flexural Strength | Fracture Toughness |
Elastic Mod- ulus | Coefficient of Thermal Expansion |
| HRA | HV30 | g/cm³ | MPa | GPa | MNm-3/2 | 0-6/℃ | |||
| ST15D | 9 | Sub-Micron | 91.2 | 1520 | 14.4 | 3500 | 13 | 500 | 5.3 |
| D(mm) | Tolerance | L(mm) | Tolerance | TK(mm) | Tolerance | d(mm) | Tolerance | P (±0.5o) |
amax(mm) |
| 6.3 | +0.9/+1.3 | 63 | +0.5/+1.0 | 2.60 | +0/-0.40 | 0.70 | ±0.10 | 32.65 -0.65/+0.67 | 0.15 |
| 6.3 | +0.9/+1.3 | 67 | +0.5/+1.0 | 2.60 | +0/-0.40 | 0.70 | ±0.10 | 32.65 -0.65/+0.67 | 0.15 |
| 6.3 | +0.9/+1.3 | 75 | +0.5/+1.0 | 2.60 | +0/-0.40 | 0.70 | ±0.10 | 32.65 -0.65/+0.67 | 0.15 |
| 6.3 | +0.9/+1.3 | 83 | +0.5/+1.0 | 2.60 | +0/-0.40 | 0.70 | ±0.10 | 32.65 -0.65/+0.67 | 0.15 |
| 8.3 | +0.9/+1.3 | 80 | +0.5/+1.0 | 4.00 | +0/-0.40 | 1.00 | ±0.15 | 43.53 -0.86/+0.89 | 0.15 |
| 8.3 | +0.9/+1.3 | 92 | +0.5/+1.0 | 4.00 | +0/-0.40 | 1.00 | ±0.15 | 43.53 -0.86/+0.89 | 0.15 |
| 10.3 | +0.9/+1.3 | 90 | +0.5/+1.0 | 4.80 | +0/-0.60 | 1.40 | ±0.15 | 54.41 -1.08/+1.11 | 0.20 |
| 10.3 | +0.9/+1.3 | 103 | +0.5/+1.0 | 4.80 | +0/-0.60 | 1.40 | ±0.15 | 54.41 -1.08/+1.11 | 0.20 |
| 12.3 | +1.1/+1.5 | 103 | +0.5/+1.0 | 6.25 | +0/-0.80 | 1.40 | ±0.15 | 65.30 -1.30/+1.34 | 0.30 |
| 12.3 | +1.1/+1.5 | 119 | +0.5/+1.0 | 6.25 | +0/-0.80 | 1.40 | ±0.15 | 65.30 -1.30/+1.34 | 0.30 |
| 14.3 | +1.1/+1.5 | 108 | +0.5/+1.0 | 7.10 | +0/-0.80 | 1.75 | ±0.20 | 76.18 -1.51/+1.56 | 0.37 |
| 14.3 | +1.1/+1.5 | 125 | +0.5/+1.0 | 7.10 | +0/-0.80 | 1.75 | ±0.20 | 76.18 -1.51/+1.56 | 0.37 |
| 16.3 | +1.1/+1.5 | 116 | +0.5/+1.0 | 8.30 | +0/-0.80 | 1.75 | ±0.20 | 87.06 -1.73/+1.78 | 0.40 |
| 16.3 | +1.1/+1.5 | 134 | +0.5/+1.0 | 8.30 | +0/-0.80 | 1.75 | ±0.20 | 87.06 -1.73/+1.78 | 0.40 |
| 18.3 | +1.1/+1.5 | 124 | +0.5/+1.0 | 9.55 | +0/-0.80 | 2.00 | ±0.25 | 97.95 -1.94/+2.00 | 0.50 |
| 18.3 | +1.1/+1.5 | 144 | +0.5/+1.0 | 9.55 | +0/-0.80 | 2.00 | ±0.25 | 97.95 -1.94/+2.00 | 0.50 |
| 20.3 | +1.1/+1.5 | 132 | +0.5/+1.0 | 10.40 | +0/-1.00 | 2.00 | ±0.25 | 108.83 -2.16/+2.23 | 0.50 |
| 20.3 | +1.1/+1.5 | 154 | +0.5/+1.0 | 10.40 | +0/-1.00 | 2.00 | ±0.25 | 108.83 -2.16/+2.23 | 0.50 |