Compare 20 Grades of Knife Steel - ThoughtCo
Jul 30, 2019 · High-carbon stainless steels, this grade of stainless can be hardened to a greater degree than 420-grade steel, allowing for greater strength and wear resistance. 440A is used in many production knives because of its edge retention, ease of resharpening, and corrosion resistance. 440C (and similar grades including Gin-1, ATS-55, 8A)
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