Press Brake Bend Allowance Chart
Press Brake Bending Tonnage Chart
Formula For Notching Mild Steel
Hole Punching Tonnage Chart
Punch Press Data
Notching-Tonnage Chart
Shear Factor Chart
Press Brake Forming Tonnage


Press Brake Bend Allowance Chart (BA) For Mild Steel
Part
Radius
(R)
Metal Thickness
24 GA
.024"
22 GA
.030"
20 GA
.036"
18 GA
.048"
16 GA
.060"
14 GA
.075"
12 GA
.105"
11 GA
.120"
10 GA
.134"
7 GA
.179"
1/4"
.250"
1/64"
.021
.026
.030
.039
.049
.059
.081
.092
.103
.143
.189
1/32"
.025
.029
.033
.042
.053
.062
.084
.096
.107
.146
.192
1/16"
.031
.036
.040
.049
.058
.069
.091
.102
.113
.153
.198
3/32"
.038
.043
.047
.056
.065
.076
.098
.109
.120
.160
.205
1/8"
.045
.049
.054
.062
.071
.082
.105
.116
.127
.166
.212
3/16"
.056
.061
.065
.073
.081
.091
.111
.121
.131
.167
.225
1/4"
.068
.072
.076
.083
.090
.099
.117
.127
.136
.168
.239
5/16"
.082
.085
.089
.096
.104
.113
.131
.140
.149
.181
.253
3/8"
.095
.099
.102
.110
.117
.126
.144
.153
.162
.195
.267
1/2"
.122
.126
.129
.136
.144
.153
.171
.180
.189
.221
.295
Bend allowances are approximate guides to establish dimensions for bending and to develop the flat blank size of the part.


GAUGING DIMENSIONS




To establish gauge setting dimension, subtract bend allowance (BA) from desired outside dimension on finished part (OD).
DEVELOPED BLANK SIZE



To establish the flat blank size required, add all outside dimensions (OD), then subtract twice the bend allowance (BA) times the number of 90 degree bends.
Blank size = OD1 + OD2 + OD3 + OD4 - 6BA



Press Brake Bend Allowance Chart
Press Brake Bending Tonnage Chart
Formula For Notching Mild Steel
Hole Punching Tonnage Chart
Punch Press Data
Notching-Tonnage Chart
Shear Factor Chart
Press Brake Forming Tonnage