The Use of 4140 Steel in the Production of Gears and Shafts: Fatigue and Wear Resistance
4140 steel is a low-alloy steel that contains chromium, molybdenum, and manganese. These elements make it highly resistant to fatigue and wear in a variety of environments. Using 4140 alloy steel in the production of gears and shafts has become increasingly popular due to its high strength, toughness, and resistance to wear and fatigue.
The production of automotive parts including shafts, pinions, and gears frequently uses 4140 steel. This material is also used in the manufacture of various consumer goods. Such as hand tools, sporting goods, and other products that require high strength and wear resistance.
The Use of 4140 Steel
4140 alloy steel can be made into round steel bars, flat & square steel bars, steel plates, and steel tubes, and has many uses in the aerospace, oil and gas, and automotive industries. Typical uses are thin-walled pressure vessels, forged gears and shafts (Motor shafts, pump shafts, hydraulic shafts, etc.), and spindles (lathe spindles, milling…).
The low-cycle fatigue (LCF) behavior of 4140 steel under annealed and as-received conditions was investigated at room temperature. The annealing treatment causes a marked decrease in mechanical strength but an increase in plastic energy and ductility. The annealing treatment of 4140 steel significantly increases the LCF resistance.
