The nickel concentration adds to the case’s strong strength and above-average core toughness. Chromium and molybdenum help carbides develop properly, resulting in good surface hardness and wear. It’s the most common carburizing alloy on the market.

8620 carbon steel can also be used as high tensile steel (uncarburized), which can be used for a variety of applications needing great tensile strength and adequate toughness when properly hardened and tempered.

Because of its low carbon content, prehardened and tempered (uncarburized) 8620 carbon steel can be further surface hardened by nitriding, but it will not respond adequately to flame or induction hardening.

For light to medium stressed components and shafts requiring good surface wear resistance with appropriate core strength and impact qualities, 8620 (carburized) is widely employed across all industry sectors.