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420/X20Cr13/2Cr13 stainless steel

420/X20Cr13/2Cr13 stainless steel

420 (X20Cr13 / 2Cr13) is a high-carbon martensitic stainless steel that offers excellent hardness and wear resistance after heat treatment, along with moderate corrosion resistance. It is commonly used in applications requiring sharp edges, high surface hardness, and reasonable resistance to atmospheric and mild chemical corrosion.

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Benefits

Benefits:
High Hardness and Wear Resistance: Can be hardened to 50–56 HRC, ideal for cutting tools, blades, and wear-resistant components.
Moderate Corrosion Resistance: Resists corrosion in mildly aggressive environments, including air, fresh water, and food processing settings.
Good Edge Retention: Commonly used in knives and tools due to its ability to maintain sharp edges.
Reasonable Toughness: Offers adequate impact resistance for many industrial and consumer applications.
Good Machinability in Annealed State: Easily processed before hardening, with typical machining techniques.