CE VS PREHEAT
Carbon Equivalent
Preheat temperature
< 0.45 0.45 - 0.60 > 0.60
Optional 200 - 400 F 400 - 700 F
• Is there any basis to use for determining whether preheat is advisable or not? • The above is suggested as a guide for selection of either the hardness control or hydrogen control method to prevent cracking
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