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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
from:
Steel color chart
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