Stainless Steel Grades - Continental Steel & Tube CompanyExplore further
Type 440. a higher grade of cutlery steel, with more carbon in it, which allows for much better edge retention when the steel is heat treated properly. It can be hardened to Rockwell 58 hardness, making it one of the hardest stainless steels. Also known as 'razor blade steel'. Available in three grades 440A, 440B, 440C (more common) and 440F ...
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