AISI 4130 Steel heating specification

AISI 4130 steel is a low alloy steel that is used in structural designs that may be found in applications such as aircraft engine mounts or welded tubing. AISI 4130 Steel is well known for its ease of welding and ability to harden in commercial applications. AISI 4130 Steel is commonly referred to as chromium-molybdenum steel.

AISI 4130 can be heated as a way to harden the material. When hardening is desired, the material should be heated at a minimum of 1600 degrees F. followed by an oil quench. The best results can be obtained when heating occurs between 1650 and 1700 degrees, followed by oil quench and soak of 1600 degrees.

If the AISI 4130 steel material loses too much ductility during this process, the material can be tempered to restore some of the function. Tempering should be conducted at temperatures between 750 and 1050 degrees, depending on the resultant strength desired. The lower temperatures generally result in greater strengths during the tempering process. AISI 4130 steel heating can also be used to make the material easier to work with. AISI 4130 steel manipulation heating can be best conducted in a range of 2000 to 1500 degrees.

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