| Temper Color |
°F |
Common Uses |
| FAINT YELLOW | 420 | KNIVES,HAMMERS |
| VERY PALE YELLOW | 430 | REAMERS |
| LIGHT YELLOW | 440 | LATHE TOOLS, SCRAPERS, MILLING CUTTERS, REAMERS |
| PALE STRAW YELLOW | 450 | TWIST DRILLS FOR HARD USE |
| STRAW YELLOW | 460 | DIES, PUNCHES, BITS, REAMERS |
| DEEP STRAW YELLOW | 470 |
| DARK YELLOW | 480 | TWIST DRILLS, LARGE TAPS |
| 485 | KNURLS |
| YELLOW BROWN | 490 |
| BROWN YELLOW | 500 | AXES, WOOD CHISELS, DRIFTS, TAPS >= 1/2", NUT TAPS, DIES |
| SPOTTED RED BROWN | 510 |
| BROWN PURPLE | 520 | TAPS <= 1/4" |
| LIGHT PURPLE | 530 |
| FULL PURPLE | 540 | COLD CHISELS, CENTER PUNCHES |
| DARK PURPLE | 550 |
| FULL BLUE | 560 | SCREWDRIVERS, SPRINGS, GEARS |
| DARK BLUE | 570 |
| MEDIUM BLUE | 600 | SCRAPERS, SPOKESHAVES |
| LIGHT BLUE | 640 |
| RED-VISIBLE AT NIGHT | 750 |
| RED-VISIBLE AT TWILIGHT | 885 |
| RED-VISIBLE IN DAYLIGHT | 975 |
| RED-VISIBLE IN SUNLIGHT | 1075 |
| DARK RED | 1290 |
| DULL CHERRY RED | 1475 |
| CHERRY RED | 1650 |
| BRIGHT CHERRY RED | 1830 |
| ORANGE RED | 2010 |
| ORANGE YELLOW | 2190 |
| YELLOW WHITE | 2370 |
| WHITE | 2550 |
| BRILLIANT WHITE | 2730 |
| BLUE WHITE | 2900 |
| ACETYLENE FLAME | 4080 |
| INDUCTION FURNACE | 5450 |
| ELECTRIC ARC LIGHT | 7200 |