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What are the classifications of carbon steel?
< 1 > Stainless steel material has strong thermal sensitivity, and the residence time is slightly longer in the temperature zone of 450-850 ° C, and the corrosion resistance of weld and heat-affected zone is seriously decreased.
< 2 > Prone to thermal cracking.
< 3 > Poor protection, high temperature oxidation.
< 4 > The linear expansion coefficient is large, resulting in large welding deformation.
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