Technical Parameters
Linear Tolerance
Dimensions (mm) | Normal (mm) | The Equivalent | Premium (mm) | The Equivalent | ||
ISO8062-3 (2007) | VDG P690 (1990) | ISO8062-3 (2007) | VDG P690 (1990) | |||
0-10 | ±0.26 | DCTG6 | D2 | ±0.13 | DCTG4 | D3 |
10-16 | ±0.27 | DCTG6 | D1 | ±0.14 | DCTG4 | D2 |
16-25 | ±0.28 | DCTG6 | D1 | ±0.15 | DCTG4 | D2 |
25-40 | ±0.32 | DCTG6 | D2 | ±0.23 | DCTG5 | D2 |
40-63 | ±0.35 | DCTG6 | D2 | ±0.25 | DCTG5 | D2 |
63-100 | ±0.55 | DCTG7 | D1 | ±0.39 | DCTG6 | D2 |
100-160 | ±0.90 | DCTG8 | D1 | ±0.60 | DCTG7 | D2 |
160-250 | ±1.40 | DCTG9 | D1 | ±1.00 | DCTG8 | D2 |
250-400 | ±2.20 | DCTG10 | D1 | ±1.60 | DCTG9 | D2 |
>400 | ±.8% | DCTG11 | D1 | ±0.5% | DCTG9 | D2 |
Size And Weight Range
Items | Size | Premium |
Outline Dimension (mm) | 1000×620×380 | ﹤100 |
Weight (Kg) | 0.001-80 | 0.1-1.5 |
Min.Wall Thickness (mm) | 0.5 | 5-10 |
Angle Tolerance
Angle Type |
|  |  |
Normal | ±1° | ±2° | ±2° |
Premium | ±0.5° | ±1° | ±1° |
Avoid the quick changes of casting structure,use fillet radius on |  | ||
Limit Dimension For Cast Holes and Slots
Items | Hole Dia.(mm) | L/D |
| Φ2-Φ3 | L/D≤2 |
Φ4-Φ7 | L/D≤5 | |
≥Φ8 | L/D≤10 | |
 | Φ2-Φ3 | L/D≤1 |
Φ4-Φ7 | L/D≤2.5 | |
≥Φ8 | L/D≤3.5 | |
Deeper and more complicated holes and slots can be casted by using soluble wax cores and ceramic cores. | ||
Tolerance for Flatness, Straitness and Roundness
Dimension (mm) | Normal | Premium |
0-25 | 0.2 | 0.1 |
25-50 | 0.4 | 0.2 |
50-100 | 0.6 | 0.3 |
100-150 | 0.8 | 0.4 |
Surface Roughness
Rough Castings | (Weight) >5kg Main Wall Thickness >12 mm | Ra3.2-6.3 |
(Weight)<5kg Main Wall Thickness<12 mm | Ra1.6-3.2 | |
Finished Castings | 0.8-1.6 | |
