AISI 4142 Multipurpose Alloy Steel

This steel, also known as "Chrome Moly" maintains exceptional fatigue, abrasion and impact resistant qualities as a result of its main alloying elements of chromium and molybdenum. The D. B. & S. Steel 4142 product can be heat treated to increase its toughness and wear resistance. On its annealed state it can be readily formed and machined. It is useful in applications that require a lower hardness and less wear resistance than a fully heat treated tool steel, but it can be flame-hardened where a hardness is desired.

Typical applications include:
-  Crankshafts    
-  Gears   
-  Axies
-  Shafts


The chemical composition of the D. B. & S Steel grade 4142 ground flat stock falls within ranges that are rigidly monitored. These chemical ranges are shown below *


*Source: Steel Products Manual "TOOL STEELS" a publication of the Iron and Steel      Society  - June 2000