| Thickness of MATERIAL | Width of Die opening | |||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gauge | Inches | 1/4" | 5/16" | 3/8" | 7/16" | 0.5 | 3/8” | 0.75 | 0.875 | 1 ” | 1.125 | 1.25 | 1.5 | 2" | 2.5 | 3" | 3.5 | 4" | 5" | 6" | 7" | 8" | 10" | 12" |
| 20 | 0.036 | 3.1 | 2.3 | 1.7 | 1.4 | 1.1 | ||||||||||||||||||
| 18 | 0.048 | 5.3 | 4 | 3 | 2.5 | 2.2 | 1.7 | 1.3 | ||||||||||||||||
| 16 | 0.06 | 9.6 | 7.1 | 5.6 | 4.5 | 3.8 | 2.8 | 2.2 | 1.8 | 1.5 | ||||||||||||||
| 14 | 0.075 | 11.9 | 9.2 | 7.6 | 6.3 | 4.7 | 3.5 | 3 | 2.5 | 2.1 | 1.8 | |||||||||||||
| 12 | 0.105 | 16.7 | 13.1 | 9.7 | 8 | 6.5 | 5.6 | 4.6 | 4.1 | 3.2 | ||||||||||||||
| 11 | 0.12 | 19.2 | 14.2 | 11.1 | 9 | 7.5 | 6.3 | 5.5 | 4.4 | 2.9 | ||||||||||||||
| 10 | 0.135 | 18.6 | 14.5 | 11.9 | 9.9 | 8.5 | 7.3 | 5.8 | 4 | |||||||||||||||
| 3/16" | 0.188 | 27.4 | 23.1 | 19.3 | 16.4 | 14.3 | 11.2 | 7.5 | 4.4 | |||||||||||||||
| 1/4" | 0.25 | 39.4 | 33.3 | 29.5 | 22.7 | 15.4 | 11.4 | 9 | 7.4 | 6.1 | ||||||||||||||
| 5/16" | 0.313 | 50.4 | 39.8 | 27 | 19.7 | 15.3 | 12.7 | 10.5 | 7.7 | |||||||||||||||
| 3/8" | 0.375 | 61.6 | 42.3 | 30.9 | 24 | 19.6 | 16.3 | 12.3 | 9.5 | |||||||||||||||
| 7/16" | 0.438 | 61.7 | 45.8 | 35.4 | 28.6 | 24.4 | 17.3 | 14.8 | 11.2 | |||||||||||||||
| 1/2" | 0.5 | 85.2 | 63.6 | 48.8 | 39.7 | 33.3 | 24.6 | 19.4 | 15.9 | 13.1 | ||||||||||||||
| 5/8" | 0.625 | 110 | 86.2 | 70 | 58.3 | 43.1 | 33.3 | 27.4 | 23.3 | 16.9 | ||||||||||||||
| 3/4" | 0.75 | 138 | 110 | 93 | 68.7 | 53.5 | 43.6 | 36.5 | 27.1 | 21 | ||||||||||||||
| 7/8" | 0.875 | 165 | 137 | 104 | 80.7 | 64.6 | 52.9 | 39.7 | 31.6 | |||||||||||||||
| 1" | 1 | 197 | 143 | 113 | 91.2 | 76.2 | 56.3 | 44.2 | ||||||||||||||||
| Notes: The tonnages indicated in bold italics are for die openings eight times the thickness of the metal. With an 8:1 die ratio, the inside radius of a right angle bend is approximately equal to the thickness of the material. |