| Degrees | Degrees | Degrees | Degrees | Degrees | Degrees | Degrees | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| F. | C. | F. | C. | F. | C. | F. | C. | F. | C. | F. | C. | F. | C. |
| -40 | -40.0 | 3 | -16.1 | 46 | 7.7 | 89 | 31.6 | 132 | 55.5 | 175 | 79.4 | 275 | 135.0 |
| -39 | -39.4 | 4 | -15.5 | 47 | 8.3 | 90 | 32.2 | 133 | 56.1 | 176 | 80.0 | 300 | 148.8 |
| -38 | -38.8 | 5 | -15.0 | 48 | 8.8 | 91 | 32.7 | 134 | 56.6 | 177 | 80.5 | 325 | 162.7 |
| -37 | -38.3 | 6 | -14.4 | 49 | 9.3 | 92 | 33.3 | 135 | 57.2 | 178 | 81.1 | 350 | 176.6 |
| -36 | -37.7 | 7 | -13.8 | 50 | 10.0 | 93 | 33.9 | 136 | 57.7 | 179 | 81.6 | 375 | 190.5 |
| -35 | -37.2 | 8 | -13.3 | 51 | 10.5 | 94 | 34.4 | 137 | 58.3 | 180 | 82.2 | 400 | 204.4 |
| -34 | -36.6 | 9 | -12.7 | 52 | 11.1 | 95 | 35.0 | 138 | 58.8 | 181 | 82.7 | 425 | 218.3 |
| -33 | -36.1 | 10 | -12.2 | 53 | 11.6 | 96 | 35.5 | 139 | 59.4 | 182 | 83.3 | 450 | 232.2 |
| -32 | -35.5 | 11 | -11.6 | 54 | 12.2 | 97 | 36.1 | 140 | 60.0 | 183 | 83.8 | 475 | 246.1 |
| -31 | -35.0 | 12 | -11.1 | 55 | 12.7 | 98 | 36.6 | 141 | 60.5 | 184 | 84.4 | 500 | 260.0 |
| -30 | -34.4 | 13 | -10.5 | 56 | 13.3 | 99 | 37.2 | 142 | 61.1 | 185 | 85.0 | 525 | 273.8 |
| -29 | -33.9 | 14 | -10.0 | 57 | 13.8 | 100 | 37.7 | 143 | 61.6 | 186 | 85.5 | 550 | 287.7 |
| -28 | -33.3 | 15 | -9.3 | 58 | 14.4 | 101 | 38.3 | 144 | 62.2 | 187 | 86.1 | 575 | 301.6 |
| -27 | -32.7 | 16 | -8.8 | 59 | 15.0 | 102 | 38.8 | 145 | 62.7 | 188 | 86.6 | 600 | 315.5 |
| -26 | -32.2 | 17 | -8.3 | 60 | 15.5 | 103 | 39.4 | 146 | 63.3 | 189 | 87.2 | 625 | 329.4 |
| -25 | -31.6 | 18 | -7.7 | 61 | 16.1 | 104 | 40.0 | 147 | 63.8 | 190 | 87.7 | 650 | 343.3 |
| -24 | -31.1 | 19 | -7.2 | 62 | 16.6 | 105 | 40.5 | 148 | 64.4 | 191 | 88.3 | 675 | 357.2 |
| -23 | -30.5 | 20 | -6.6 | 63 | 17.2 | 106 | 41.1 | 149 | 65.0 | 192 | 88.8 | 700 | 371.1 |
| -22 | -30.0 | 21 | -6.1 | 64 | 17.7 | 107 | 41.6 | 150 | 65.5 | 193 | 89.4 | 725 | 385.0 |
| -21 | -29.4 | 22 | -5.5 | 65 | 18.3 | 108 | 42.2 | 151 | 66.1 | 194 | 90.0 | 750 | 398.8 |
| -20 | -28.8 | 23 | -5.0 | 66 | 18.8 | 109 | 42.7 | 152 | 66.6 | 195 | 90.5 | 775 | 412.7 |
| -19 | -28.3 | 24 | -4.4 | 67 | 19.4 | 110 | 43.3 | 153 | 67.2 | 196 | 91.1 | 800 | 426.6 |
| -18 | -27.7 | 25 | -3.8 | 68 | 20.0 | 111 | 43.8 | 154 | 67.7 | 197 | 91.6 | 825 | 440.5 |
| -17 | -27.2 | 26 | -3.3 | 69 | 20.5 | 112 | 44.4 | 155 | 68.3 | 198 | 92.2 | 850 | 454.4 |
| -16 | -26.6 | 27 | -2.7 | 70 | 21.1 | 113 | 45.0 | 156 | 68.8 | 199 | 92.7 | 875 | 468.3 |
| -15 | -26.1 | 28 | -2.2 | 71 | 21.6 | 114 | 45.5 | 157 | 69.4 | 200 | 93.3 | 900 | 482.2 |
| -14 | -25.5 | 29 | -1.6 | 72 | 22.2 | 115 | 46.1 | 158 | 70.0 | 201 | 93.8 | 925 | 496.1 |
| -13 | -25.0 | 30 | -1.1 | 73 | 22.7 | 116 | 46.6 | 159 | 70.5 | 202 | 94.4 | 950 | 510.0 |
| -12 | -24.4 | 31 | -0.5 | 74 | 23.3 | 117 | 47.2 | 160 | 71.1 | 203 | 95.0 | 975 | 523.8 |
| -11 | -23.8 | 32 | -0.0 | 75 | 23.8 | 118 | 47.7 | 161 | 71.6 | 204 | 95.5 | 1,000 | 537.7 |
| -10 | -23.3 | 33 | +0.5 | 76 | 24.4 | 119 | 48.3 | 162 | 72.2 | 205 | 96.1 | 1,100 | 593.3 |
| -9 | -22.7 | 34 | 1.1 | 77 | 25.0 | 120 | 48.8 | 163 | 72.7 | 206 | 96.6 | 1,200 | 648.8 |
| -8 | -22.2 | 35 | 1.6 | 78 | 25.5 | 121 | 49.4 | 164 | 73.3 | 207 | 97.2 | 1,300 | 704.4 |
| -7 | -21.6 | 36 | 2.2 | 79 | 26.1 | 122 | 50.0 | 165 | 73.8 | 208 | 97.7 | 1,400 | 760.0 |
| -6 | -21.1 | 37 | 2.7 | 80 | 26.6 | 123 | 50.5 | 166 | 74.4 | 209 | 98.3 | 1,500 | 815.5 |
| -5 | -20.5 | 38 | 3.3 | 81 | 27.2 | 124 | 51.1 | 167 | 75.0 | 210 | 98.8 | 1,600 | 871.1 |
| -4 | -20.0 | 39 | 3.8 | 82 | 27.7 | 125 | 51.6 | 168 | 75.5 | 211 | 99.4 | 1,700 | 926.6 |
| -3 | -19.4 | 40 | 4.4 | 83 | 28.3 | 126 | 52.2 | 169 | 76.1 | 212 | 100.0 | 1,800 | 982.2 |
| -2 | -18.8 | 41 | 5.0 | 84 | 28.8 | 127 | 52.7 | 170 | 76.6 | 213 | 100.5 | 1,900 | 1,037.7 |
| -1 | -18.3 | 42 | 5.5 | 85 | 29.4 | 128 | 53.3 | 171 | 77.2 | 214 | 101.1 | 2,000 | 1,093.3 |
| 0 | -17.7 | 43 | 6.1 | 86 | 30.0 | 129 | 53.8 | 172 | 77.7 | 215 | 101.6 | 2,100 | 1,148.8 |
| +1 | -17.2 | 44 | 6.6 | 87 | 30.5 | 130 | 54.4 | 173 | 78.3 | 225 | 107.2 | 2,200 | 1,204.4 |
| 2 | -16.6 | 45 | 7.2 | 88 | 31.1 | 131 | 55.0 | 174 | 78.8 | 250 | 121.1 | 2,300 | 1,260.0 |
| Degrees Fahrenheit = | 9 x degrees C. | + 32 |
| 5 | ||
| Degrees Centigrade = | 5 x (degrees F. - 32) | |
| 9 | ||
Three other useful tables are also given on the following pages.
| Size in inches | Round | Octagon | Square | Size in inches | Round | Octagon | Square |
|---|---|---|---|---|---|---|---|
| 1/16 | 0.010 | 0.011 | 0.013 | 2-1/2 | 16.79 | 17.71 | 21.37 |
| 1/8 | 0.042 | 0.044 | 0.053 | 2-5/8 | 18.51 | 19.52 | 23.56 |
| 3/16 | 0.094 | 0.099 | 0.120 | 2-3/4 | 20.31 | 21.42 | 25.86 |
| 1/4 | 0.168 | 0.177 | 0.214 | 2-7/8 | 22.20 | 23.41 | 28.27 |
| 5/16 | 0.262 | 0.277 | 0.334 | 3 | 24.17 | 25.50 | 30.78 |
| 3/8 | 0.378 | 0.398 | 0.481 | 3-1/8 | 26.23 | 27.66 | 33.40 |
| 7/16 | 0.514 | 0.542 | 0.655 | 3-1/4 | 28.37 | 29.92 | 36.12 |
| 1/2 | 0.671 | 0.708 | 0.855 | 3-3/8 | 30.59 | 32.27 | 38.95 |
| 9/16 | 0.850 | 0.896 | 1.082 | 3-1/2 | 32.90 | 34.70 | 41.89 |
| 5/8 | 1.049 | 1.107 | 1.336 | 3-5/8 | 35.29 | 37.23 | 44.94 |
| 11/16 | 1.270 | 1.339 | 1.616 | 3-3/4 | 37.77 | 39.84 | 48.09 |
| 3/4 | 1.511 | 1.594 | 1.924 | 3-7/8 | 40.33 | 42.54 | 51.35 |
| 13/16 | 1.773 | 1.870 | 2.258 | 4 | 42.97 | 45.34 | 54.72 |
| 7/8 | 2.056 | 2.169 | 2.618 | 4-1/4 | 48.51 | 51.17 | 61.77 |
| 15/16 | 2.361 | 2.490 | 3.006 | 4-1/2 | 54.39 | 57.37 | 69.25 |
| 1 | 2.686 | 2.833 | 3.420 | 4-3/4 | 60.60 | 63.92 | 77.16 |
| 1-1/8 | 3.399 | 3.585 | 4.328 | 5 | 67.15 | 70.83 | 85.50 |
| 1-1/4 | 4.197 | 4.427 | 5.344 | 5-1/4 | 74.03 | 78.08 | 94.26 |
| 1-3/8 | 5.078 | 5.356 | 6.646 | 5-1/2 | 81.25 | 85.70 | 103.45 |
| 1-1/2 | 6.044 | 6.374 | 7.695 | 5-3/4 | 88.80 | 93.67 | 113.07 |
| 1-5/8 | 7.093 | 7.481 | 9.031 | 6 | 96.69 | 101.99 | 123.12 |
| 1-3/4 | 8.226 | 8.674 | 10.474 | 7 | 131.61 | 138.82 | 167.58 |
| 1-7/8 | 9.443 | 9.960 | 12.023 | 8 | 171.90 | 181.32 | 218.88 |
| 2 | 10.744 | 11.332 | 13.680 | 9 | 217.57 | 229.48 | 277.02 |
| 2-1/8 | 12.129 | 12.793 | 15.443 | 10 | 268.60 | 283.31 | 342.00 |
| 2-1/4 | 13.598 | 14.343 | 17.314 | 11 | 325.01 | 342.80 | 413.82 |
| 2-3/8 | 15.151 | 15.981 | 19.291 | 12 | 386.79 | 407.97 | 492.48 |
High-speed steel, being more dense than carbon steel, weighs from 10 to 11 per cent more than carbon steel. This should be added to figures given in the table.
| Diameter, inches | Weight per foot | Diameter, inches | Weight per foot | Diameter, inches | Weight per foot |
|---|---|---|---|---|---|
| 12 | 386.790 | 15-7/8 | 677.527 | 19-3/4 | 1,049.010 |
| 12-1/8 | 395.518 | 16 | 687.600 | 19-7/8 | 1,061.705 |
| 12-1/4 | 404.246 | 16-1/8 | 699.017 | 20 | 1,074.400 |
| 12-3/8 | 412.974 | 16-1/4 | 710.435 | 20-1/8 | 1,088.502 |
| 12-1/2 | 421.702 | 16-3/8 | 721.852 | 20-1/4 | 1,102.605 |
| 12-5/8 | 430.430 | 16-1/2 | 733.270 | 20-3/8 | 1,116.707 |
| 12-3/4 | 439.158 | 16-5/8 | 744.687 | 20-1/2 | 1,130.810 |
| 12-7/8 | 447.886 | 16-3/4 | 756.105 | 20-5/8 | 1,144.912 |
| 13 | 456.615 | 16-7/8 | 767.522 | 20-3/4 | 1,159.015 |
| 13-1/8 | 465.343 | 17 | 778.940 | 20-7/8 | 1,173.118 |
| 13-1/4 | 474.071 | 17-1/8 | 790.358 | 21 | 1,187.220 |
| 13-3/8 | 482.799 | 17-1/4 | 801.777 | 21-1/8 | 1,201.322 |
| 13-1/2 | 491.527 | 17-3/8 | 813.195 | 21-1/4 | 1,215.425 |
| 13-5/8 | 500.255 | 17-1/2 | 824.614 | 21-3/8 | 1,229.527 |
| 13-3/4 | 508.983 | 17-5/8 | 836.030 | 21-1/2 | 1,243.630 |
| 13-7/8 | 517.711 | 17-3/4 | 847.447 | 21-5/8 | 1,257.732 |
| 14 | 526.440 | 17-7/8 | 858.863 | 21-3/4 | 1,271.835 |
| 14-1/8 | 536.512 | 18 | 870.280 | 21-7/8 | 1,285.937 |
| 14-1/4 | 546.585 | 18-1/8 | 883.105 | 22 | 1,300.040 |
| 14-3/8 | 556.657 | 18-1/4 | 895.920 | 22-1/8 | 1,315.485 |
| 14-1/2 | 566.730 | 18-3/8 | 908.740 | 22-1/4 | 1,330.930 |
| 14-5/8 | 576.802 | 18-1/2 | 921.560 | 22-3/8 | 1,346.375 |
| 14-3/4 | 586.875 | 18-5/8 | 934.380 | 22-1/2 | 1,361.820 |
| 14-7/8 | 596.947 | 18-3/4 | 947.200 | 22-5/8 | 1,377.265 |
| 15 | 607.020 | 18-7/8 | 960.020 | 22-3/4 | 1,392.710 |
| 15-1/8 | 617.092 | 19 | 972.840 | 22-7/8 | 1,408.155 |
| 15-1/4 | 627.165 | 19-1/8 | 985.035 | 23 | 1,423.600 |
| 15-3/8 | 637.237 | 19-1/4 | 998.230 | 23-1/8 | 1,454.490 |
| 15-1/2 | 647.310 | 19-3/8 | 1,010.925 | 23-1/4 | 1,485.380 |
| 15-5/8 | 657.382 | 19-1/2 | 1,023.620 | 23-3/8 | 1,516.270 |
| 15-3/4 | 667.455 | 19-5/8 | 1,036.315 | 24 | 1,547.160 |
To find the weight of discs made of carbon steel, in diameters up to and including 12 in., without any allowance for finishing multiply the per foot weight of round bar steel, shown herewith by the decimal equivalent of a foot given in the following table:
| In. | 0 | 1/8 | 1/4 | 3/8 | 1/2 | 5/8 | 3/4 | 7/8 |
|---|---|---|---|---|---|---|---|---|
| 0 | 0.000 | 0.010 | 0.021 | 0.031 | 0.042 | 0.052 | 0.063 | 0.073 |
| 1 | 0.083 | 0.094 | 0.104 | 0.115 | 0.125 | 0.135 | 0.146 | 0.156 |
| 2 | 0.167 | 0.177 | 0.188 | 0.198 | 0.208 | 0.219 | 0.229 | 0.240 |
| 3 | 0.250 | 0.260 | 0.270 | 0.281 | 0.292 | 0.302 | 0.313 | 0.323 |
| 4 | 0.333 | 0.344 | 0.354 | 0.364 | 0.375 | 0.385 | 0.396 | 0.406 |
| 5 | 0.416 | 0.427 | 0.437 | 0.448 | 0.458 | 0.469 | 0.479 | 0.480 |
| 6 | 0.500 | 0.510 | 0.520 | 0.531 | 0.542 | 0.552 | 0.563 | 0.573 |
| 7 | 0.583 | 0.594 | 0.604 | 0.615 | 0.625 | 0.635 | 0.646 | 0.656 |
| 8 | 0.666 | 0.677 | 0.687 | 0.698 | 0.708 | 0.719 | 0.729 | 0.740 |
| 9 | 0.750 | 0.760 | 0.770 | 0.781 | 0.792 | 0.802 | 0.813 | 0.823 |
| 10 | 0.833 | 0.844 | 0.854 | 0.865 | 0.875 | 0.885 | 0.896 | 0.906 |
| 11 | 0.916 | 0.927 | 0.937 | 0.948 | 0.953 | 0.969 | 0.979 | 0.990 |
EXAMPLE.—If the weight of a carbon steel disc 7 in. diameter, 1-5/8 in. thick is desired, turn to page 233, where the per foot weight of 7 in. round is given as 131.6 lb. Multiply this by the decimal equivalent of 1-5/8 in., or 0.135, as shown in the above table, and the product will be the net weight of the disc.
| 131.61 | lb. | = the weight of 1 ft. of 7 in. round. |
| 0.135 | = the per foot decimal equivalent of 1-5/8 in: | |
| 65805 | ||
| 39483 | ||
| 13161 | ||
| 17.76735 | lb. | = weight of disc 7 in. diam. 1-5/8 in. thick without any allowance for finishing. |