Hunan Boyun-Dongfang Powder Metallurgy Co., Ltd
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Tungsten Carbide Ground Rods with 3 Helix Coolant Holes 40° Length 330mm 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) | Toleance | L(mm) | Tolance | TK(mm) | Toleance | d(mm) | Tolance | “Thread (±0.5°)” |
a(max) | ||||||
| 6.3 | +0.9/+1.3 | 330 | +0/+5 | 2.20 | +0/-0.30 | 0.50 | ±0.15 | 22.46 -0.39/+0.40 | ±4° | ||||||
| 10.3 | +0.9/+1.3 | 330 | +0/+5 | 3.50 | +0/-0.30 | 0.80 | ±0.15 | 37.44 -0.66/+0.67 | ±4° | ||||||
| 14.3 | +1.1/+1.5 | 330 | +0/+5 | 4.70 | +0/-0.50 | 1.00 | ±0.20 | 52.42 -0.92/+0.94 | ±4° | ||||||
| 18.3 | +1.1/+1.5 | 330 | +0/+5 | 6.30 | +0/-0.50 | 1.40 | ±0.25 | 67.39 -1.18/+1.21 | ±4° | ||||||