Steel Temperature vs Color
°F

Color

°C
2000 Bright yellow 1093
1900 Dark yellow 1038
1800 Orange yellow 982
1700 Orange 927
1600 Orange red 871
1500 Bright red 816
1400 Red 760
1300 Medium red 704
1200 Dull red 649
1100 Slight red 593
1000 Very slight red, mostly grey 538
800 Dark grey 427
575 Blue 302
540 Dark Purple 282
520 Purple 271
500 Brown/Purple 260
480 Brown 249
465 Dark Straw 241
445 Light Straw 229
390 Faint Straw 199

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 This page last updated on May 04, 2009