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ASTM 8620 alloy steel is a common, carburizing alloy steel. This alloy steel is flexible during hardening treatments, thus enabling improvement of case/core properties. The following datasheet will provide more details about ASTM 8620 alloy steel.
Designation by Standards
Chemical Composition (%)
Mechanical Properties
The mechanical properties of annealed ASTM 8620 alloy steel are outlined in the table below.
Thermal Properties
The thermal properties of ASTM 8620 alloy steel are highlighted below.
Other Designations
Equivalent materials to ASTM 8620 alloy steel are outlined in the table below.
Applications
The ASTM 8620 can be used for a number of medium-strength applications such as camshafts, fasteners, gears, and chains/chain pins. AISI 8620 steel is a versatile alloy, commonly used in the automotive industry for parts like gears, shafts, camshafts, and crankshafts. It’s also employed in agricultural machinery and general engineering due to its wear resistance. This makes it ideal for components that undergo heavy stress, such as drive shafts, transmission cases, and axle housings.
ASTM 8620 Heat Treatment
​AISI 8620 can be heat-treated to adjust its mechanical properties. Quenching involves heating the steel and rapidly cooling it in oil or water for added strength. Normalizing, where the steel is cooled in air after heating, provides a more balanced structure. Heat treatment can produce tensile strengths ranging from 545 MPa to 795 MPa, depending on the method.
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