Reduction AngleReduction Angle for Different Materials, Sizes and Area Reductions
| Area Reduction(%) | Die Size(mm) | Copper | Stainless Steel | Bearing (%) |
| Al Alloy | Copper Plated Steel | |||
| 5~8 | 0.01 ~ 0.049 | 11° | 10° | 45±10% |
| 8~11 | 0.05 ~ 0.099 | 13° | 11° | 40±10% |
| 11~16 | 0.10 ~ 0.499 | 15° | 13° | 35±10% |
| 16~22 | 0.50 ~ 2.499 | 17° | 15° | 30±10% |
| 22~35 | 2.50 ~ 8.00 | 19° | 17° | 25~40% |