Taken from Solutions: Problem Steel: Among the low alloy steels, there is also a large group of special steels with complicated chemical composition. These include spring steel, vanadium steel, high speed steel, tool steel, etc. All these steel types are difficult to weld. In many cases the steel has been hardened by annealing, and welding can destroy the hardening. In principle, all these steels can be welded with matching ferritic consumables with the aid of preheating and postweld heat treatm
More:
The Welding Handbook for Maritime Welders.pdf
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