8620 carbon steel is widely used in various industrial fields. About 8620 carbon steel, some people may wonder: 8620 is carbon steel or alloy steel? The following is a brief description of 8620 carbon steel.

First, the following are the difference between Carbon and alloy steels：

Carbon and alloy steels are the most basic and most frequently used steels. They normally have small amounts of carbon and alloying elements. Carbon steels are frequently used as is, without heat treatment of any kind, but can be case hardened. Addition of lead or sulfur improves machinability but is detrimental to weldability, heat treatability, and formability. Steel parts that require no special properties or heat treatment often are madeof this type of steel.
Alloy steels have additional alloying elements and carbon added to improve the mechanical properties and hardenability. The alloying elements allow the steel to form carbon or alloy carbides that improve wear and/or toughness when heat treated.

Brief description of 8620 carbon steel：

SAE 8620 is low carbon case carburizing alloy steel, main contents of it are carbon, nickel, chromium, and molybdenum.

8620 is nickel-chromium-molybdenum alloy steel. It is recommended that the steel be hardened by carburization which gives it a tough core and hard, wear resistant surface. Nickel provides good toughness while the chrome and molybdenum increase through hardness and wear resistance. Uses include machine parts as gears, crankshafts, shafts, gear rings. 8620 has good machinability before carburizing.

8620 carbon steel can also be used (uncarburised) as high tensile steel, which when suitably hardened and tempered can be utilized for various applications requiring good tensile strength and reasonable toughness. Prehardened and tempered (uncarburized) 8620 carbon steel can be further surface hardened by nitriding but will not respond satisfactorily to flame or induction hardening due to its low carbon content.8620 (carburized) is used extensively by all industry sectors for light to medium stressed components and shafts requiring high surface wear resistance with reasonable core strength and impact properties.

8620 carbon steel is extensively used for gears, shafts, crankshafts. Typical uses are Arbors, Bearings, Bushings, Cam Shafts, Differential Pinions, Guide Pins, King Pins, Pistons Pins, Splined Shafts, Ratchets, Sleeves, etc.

We can supply a wide range of 8620 steel, include 8620 round bar,8620 plates and 8620 tubes, welcome and contact us.