AISI 4140 Steel (SAE 4140)
AISI 4140 steel is a popular low-alloy steel that contains chromium, molybdenum, and manganese as alloying elements.
The elements improve the mechanical properties of the steel, such as strength, toughness, and wear resistance. Also referred to as SAE 4140, this steel grade has high hardenability, which means it can be heat treated to achieve high strength and hardness levels.
- Improved mechanical properties
- Good wear resistance
- High strength to weight ratio
- Good machinability
AISI 4140 steel has good wear resistance due to its high carbon content and the addition of chromium and molybdenum to its composition. These elements form hard carbide particles and improve the material's wear resistance and toughness. Overall, the wear resistance of the alloy makes it a suitable material choice for components subject to high wear and abrasion.
Proper heat treatment and machining techniques can provide excellent wear resistance and long service life in demanding applications.
Chemical Composition (weight, %)