What is 420HC stainless steel

The hardness of steel is usually measured on the Rockwell C scale. Annealing 420HC stainless steel tends to result in a harder, more flexible metal compared to tempering. Tempering results in a tougher, more ductile steel. In general, because of its great edge-holding capabilities, ease of cleaning and relative hardness, 420HC stainless steel is used extensively for knife blades, surgical equipment, metal valves and large sheer cutting-edges.

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