Approximate Temperature of Steel by Color
| Color of Metal |
Degrees C |
Degrees F |
| Very Faint Yellow |
215 |
420 |
| Very Pale Yellow |
221 |
430 |
| Light Yellow |
226 |
440 |
| Pale Straw Yellow |
232 |
450 |
| Straw Yellow |
237 |
460 |
| Deep Straw Yellow |
243 |
470 |
| Dark Yellow |
249 |
480 |
| Yellow Brown |
254 |
490 |
| Brown Yellow |
260 |
500 |
| Spotted Red Brown |
265 |
510 |
| Brown Purple |
271 |
520 |
| Light Purple |
276 |
530 |
| Full Purple |
282 |
540 |
| Dark Purple |
288 |
550 |
| Full Blue |
293 |
560 |
| Dark Blue |
299 |
570 |
| Very Dark Blue |
315 |
600 |
| Blue Green |
332 |
630 |
| Black Red |
537 |
1000 |
| Blood Red |
649 |
1200 |
| Low Cherry Red |
746 |
1375 |
| Medium Cherry Red |
774 |
1425 |
| Full Cherry Red |
815 |
1500 |
| Bright Red |
843 |
1550 |
| Salmon |
899 |
1650 |
| Orange |
940 |
1725 |
| Lemon |
996 |
1825 |
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