Table 10. Lengths of Straight Stock Required for 90-Degree Bends in Soft Copper and Soft Brass
Thickness T of Material, Inch
Radius R of Bend, Inches
1 ∕
1 ∕
3 ∕
1 ∕
5 ∕
3 ∕
1 ∕
5 ∕
3 ∕
7 ∕
1 ∕
9 ∕
5 ∕
64
32
64
16
64
32
8
32
16
32
4
32
16
0.058 0.083 0.107 0.156 0.205 0.254 0.303 0.353 0.401 0.450 0.499 0.549 0.598 0.646 0.695 0.734 0.794 0.892 0.990 1.089 1.187 1.286 1.384 1.481 1.580 1.678 1.777 1.875 1.972
0.066 0.091 0.115 0.164 0.213 0.262 0.311 0.361 0.409 0.458 0.507 0.557 0.606 0.654 0.703 0.742 0.802 0.900 0.998 1.097 1.195 1.294 1.392 1.489 1.588 1.686 1.785 1.883 1.980
0.075 0.100 0.124 0.173 0.222 0.271 0.320 0.370 0.418 0.467 0.516 0.566 0.615 0.663 0.712 0.751 0.811 0.909 1.007 1.106 1.204 1.303 1.401 1.498 1.597 1.695 1.794 1.892 1.989
0.083 0.108 0.132 0.181 0.230 0.279 0.328 0.378 0.426 0.475 0.524 0.574 0.623 0.671 0.720 0.759 0.819 0.917 1.015 1.114 1.212 1.311 1.409 1.506 1.605 1.703 1.802 1.900 1.997
0.092 0.117 0.141 0.190 0.239 0.288 0.337 0.387 0.435 0.484 0.533 0.583 0.632 0.680 0.729 0.768 0.828 0.926 1.024 1.123 1.221 1.320 1.418 1.515 1.614 1.712 1.811 1.909 2.006
0.101 0.126 0.150 0.199 0.248 0.297 0.346 0.396 0.444 0.493 0.542 0.592 0.641 0.689 0.738 0.777 0.837 0.935 1.033 1.132 1.230 1.329 1.427 1.524 1.623 1.721 1.820 1.918 2.015
0.118 0.143 0.167 0.216 0.265 0.314 0.363 0.413 0.461 0.510 0.559 0.609 0.658 0.706 0.755 0.794 0.854 0.952 1.050 1.149 1.247 1.346 1.444 1.541 1.640 1.738 1.837 1.935 2.032
0.135 0.160 0.184 0.233 0.282 0.331 0.380 0.430 0.478 0.527 0.576 0.626 0.675 0.723 0.772 0.811 0.871 0.969 1.067 1.166 1.264 1.363 1.461 1.558 1.657 1.755 1.854 1.952 2.049
0.152 0.177 0.201 0.250 0.299 0.348 0.397 0.447 0.495 0.544 0.593 0.643 0.692 0.740 0.789 0.828 0.888 0.986 1.084 1.183 1.281 1.380 1.478 1.575 1.674 1.772 1.871 1.969 2.066
0.169 0.194 0.218 0.267 0.316 0.365 0.414 0.464 0.512 0.561 0.610 0.660 0.709 0.757 0.806 0.845 0.905 1.003 1.101 1.200 1.298 1.397 1.495 1.592 1.691 1.789 1.888 1.986 2.083
0.187 0.212 0.236 0.285 0.334 0.383 0.432 0.482 0.530 0.579 0.628 0.678 0.727 0.775 0.824 0.863 0.923 1.021 1.119 1.218 1.316 1.415 1.513 1.610 1.709 1.807 1.906 2.004 2.101
0.204 0.229 0.253 0.302 0.351 0.400 0.449 0.499 0.547 0.596 0.645 0.695 0.744 0.792 0.841 0.880 0.940 1.038 1.136 1.235 1.333 1.432 1.530 1.627 1.726 1.824 1.923 2.021 2.118
0.221 0.246 0.270 0.319 0.368 0.417 0.466 0.516 0.564 0.613 0.662 0.712 0.761 0.809 0.858 0.897 0.957 1.055 1.153 1.252 1.350 1.449 1.547 1.644 1.743 1.841 1.940 2.038 2.135
1 ∕ 3 ∕ 1 ∕ 3 ∕
32 64 16 32
1 ∕
8
5 ∕ 3 ∕ 7 ∕
32 16 32
1 ∕
4
9 ∕ 5 ∕
32 16 32
11 ∕
3 ∕
8
13 ∕
32 16 32
7 ∕
15 ∕
1 ∕
2
9 ∕
16
5 ∕
8
11 ∕
16
3 ∕
4
13 ∕
16
7 ∕
8
15 ∕
16
1
1 1 ∕ 1 1 ∕ 1 3 ∕ 1 1 ∕
16
8
16
4
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