Hardening
Preheat thoroughly at 1200º/1250ºF then heat to 1450º/1500ºF depending on section size. Hold until uniformly heated through. Quench in warm thin quenching oil to about 150ºF and temper immediately.
| ANALYSIS | PERCENT by WEIGHT |
|---|---|
| Carbon | 0.90 |
| Chromium | 0.50 |
| Manganese | 1.25 |
| Silicon | 0.30 |
| Tungsten | 0.50 |
Temper For Two Hours
300ºF ………. Rockwell ………. C 63-65
400ºF ………. Rockwell ………. C 61-63
500ºF ………. Rockwell ………. C 58-60
600ºF ………. Rockwell ………. C 55-57
700ºF ………. Rockwell ………. C 51-53
800ºF ………. Rockwell ………. C 48-50
900ºF ………. Rockwell ………. C 43-45
1000ºF …….. Rockwell ………. C 39-71
Tolerances
Up to .124″ Dia. …………….. + or – .0003″
.125″ thru .499″ …………….. + or – .0005″
.500″ thru 3.000″ ………….. + or – .001″
| DIAMETER | DECIMAL EQUIVALENT | WEIGHT PER 36" PIECE IN POUNDS | SKU |
|---|---|---|---|
| 1/8" | 0.125 | 0.1252 | DR18 |
| 5/32" | 0.1562 | 0.1945 | DR532 |
| 3/16" | 0.1875 | 0.2816 | DR316 |
| 7/32" | 0.2187 | 0.3831 | DR732 |
| 1/4" | 0.25 | 0.5006 | DR14 |
| 9/32" | 0.2812 | 0.6334 | DR932 |
| 5/16" | 0.3125 | 0.7822 | DR516 |
| 11/32" | 0.3437 | 0.9462 | DR1132 |
| 3/8" | 0.375 | 1.1264 | DR38 |
| 7/16" | 0.4375 | 1.5332 | DR716 |
| 1/2" | 0.5 | 2.0025 | DR12 |
| 9/16" | 0.5625 | 2.5344 | DR916 |
| 5/8" | 0.625 | 3.1290 | DR58 |
| 11/16" | 0.6875 | 3.7860 | DR1116 |
| 3/4" | 0.75 | 4.5057 | DR34 |
| 13/16" | 0.8125 | 5.2879 | DR1316 |
| 7/8" | 0.875 | 6.1327 | DR78 |
| 15/16" | 0.9375 | 7.0401 | DR1516 |
| 1" | 1 | 8.0101 | DR1 |
| 1-1/8" | 1.125 | 10.1378 | DR118 |
| 1-3/16" | 1.1875 | 11.2955 | DR1316-X |
| 1-1/4" | 1.25 | 12.5158 | DR114 |