Carbon equivalent (C.E.) is a measure of the hardenability of an steel upon welding. Hardenability increases as C.E. increases, but it depends also on the cooling rate. The faster the cooling, the hardest the resulting structure (more martensite formed).
So you can have a softer weld in a higher C.E. steel if you prevent fast cooling by preheating and/or post weld soaking.
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Welding of steels
Re: Welding of steels
