Table 12. Lengths of Straight Stock Required for 90-Degree Bends in Hard Copper, Bronze, Cold-Rolled Steel, and Spring Steel Radius R of Bend, Inches Thickness T of Material, Inch 1 ∕ 64 1 ∕ 32 3 ∕ 64 1 ∕ 16 5 ∕ 64 3 ∕ 32 1 ∕ 8 5 ∕ 32 3 ∕ 16 7 ∕ 32 1 ∕ 4 9 ∕ 32 5 ∕ 16 1 ∕ 32 0.060 0.071 0.082 0.093 0.104 0.116 0.138 0.160 0.182 0.204 0.227 0.249 0.271 3 ∕ 64 0.085 0.096 0.107 0.118 0.129 0.141 0.163 0.185 0.207 0.229 0.252 0.274 0.296 1 ∕ 16 0.109 0.120 0.131 0.142 0.153 0.165 0.187 0.209 0.231 0.253 0.276 0.298 0.320 3 ∕ 32 0.158 0.169 0.180 0.191 0.202 0.214 0.236 0.258 0.280 0.302 0.325 0.347 0.369 1 ∕ 8 0.207 0.218 0.229 0.240 0.251 0.263 0.285 0.307 0.329 0.351 0.374 0.396 0.418 5 ∕ 32 0.256 0.267 0.278 0.289 0.300 0.312 0.334 0.356 0.378 0.400 0.423 0.445 0.467 3 ∕ 16 0.305 0.316 0.327 0.338 0.349 0.361 0.383 0.405 0.427 0.449 0.472 0.494 0.516 7 ∕ 32 0.355 0.366 0.377 0.388 0.399 0.411 0.433 0.455 0.477 0.499 0.522 0.544 0.566 1 ∕ 4 0.403 0.414 0.425 0.436 0.447 0.459 0.481 0.503 0.525 0.547 0.570 0.592 0.614 9 ∕ 32 0.452 0.463 0.474 0.485 0.496 0.508 0.530 0.552 0.574 0.596 0.619 0.641 0.663 5 ∕ 16 0.501 0.512 0.523 0.534 0.545 0.557 0.579 0.601 0.623 0.645 0.668 0.690 0.712 11 ∕ 32 0.551 0.562 0.573 0.584 0.595 0.607 0.629 0.651 0.673 0.695 0.718 0.740 0.762 3 ∕ 8 0.600 0.611 0.622 0.633 0.644 0.656 0.678 0.700 0.722 0.744 0.767 0.789 0.811 13 ∕ 32 0.648 0.659 0.670 0.681 0.692 0.704 0.726 0.748 0.770 0.792 0.815 0.837 0.859 7 ∕ 16 0.697 0.708 0.719 0.730 0.741 0.753 0.775 0.797 0.819 0.841 0.864 0.886 0.908 15 ∕ 32 0.736 0.747 0.758 0.769 0.780 0.792 0.814 0.836 0.858 0.880 0.903 0.925 0.947 1 ∕ 2 0.796 0.807 0.818 0.829 0.840 0.852 0.874 0.896 0.918 0.940 0.963 0.985 1.007 9 ∕ 16 0.894 0.905 0.916 0.927 0.938 0.950 0.972 0.994 1.016 1.038 1.061 1.083 1.105 5 ∕ 8 0.992 1.003 1.014 1.025 1.036 1.048 1.070 1.092 1.114 1.136 1.159 1.181 1.203 11 ∕ 16 1.091 1.102 1.113 1.124 1.135 1.147 1.169 1.191 1.213 1.235 1.258 1.280 1.302 3 ∕ 4 1.189 1.200 1.211 1.222 1.233 1.245 1.267 1.289 1.311 1.333 1.356 1.378 1.400 13 ∕ 16 1.288 1.299 1.310 1.321 1.332 1.344 1.366 1.388 1.410 1.432 1.455 1.477 1.499 7 ∕ 8 1.386 1.397 1.408 1.419 1.430 1.442 1.464 1.486 1.508 1.530 1.553 1.575 1.597 15 ∕ 16 1.483 1.494 1.505 1.516 1.527 1.539 1.561 1.583 1.605 1.627 1.650 1.672 1.694 1 1.582 1.593 1.604 1.615 1.626 1.638 1.660 1.682 1.704 1.726 1.749 1.771 1.793 1 1 ∕ 16 1.680 1.691 1.702 1.713 1.724 1.736 1.758 1.780 1.802 1.824 1.847 1.869 1.891 1 1 ∕ 8 1.779 1.790 1.801 1.812 1.823 1.835 1.857 1.879 1.901 1.923 1.946 1.968 1.990 1 3 ∕ 16 1.877 1.888 1.899 1.910 1.921 1.933 1.955 1.977 1.999 2.021 2.044 2.066 2.088 1 1 ∕ 4 1.974 1.985 1.996 2.007 2.018 2.030 2.052 2.074 2.096 2.118 2.141 2.163 2.185
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