shaft forgings 4140 alloy steel forgings

We are a professional shaft forging manufacturer located in China. We can produce shaft forgings that fully meet your requirements according to your drawings and requirements, and 100% meet your mechanical performance requirements and size requirements.

The shaft is one of the important parts of the machine. All kinds of transmission parts that perform rotary motion transmit motion and power through the shaft. Usually, the shaft supports the rotating parts together with the bearing and the frame, and then realizes the transmission of motion and power through the coupling or clutch.

The production of high-quality shafts is inseparable from high-quality shaft forgings. We have provided various types of high-quality 4140 alloy shaft forgings, such as 4140 smooth shaft forgings, 4140 stepped shaft forgings, 4140 solid shaft forgings, 4140 hollow shaft forgings, 4140 concentric shaft forgings, pump shaft forgings, spline shaft forgings, torsion shaft forgings, quill shaft forgings, intermediate shaft forgings, line shaft forgings, drive shaft forgings, propeller shaft forgings, gear shaft forgings, transmission shaft forgings, stub shaft forgings, rotor shaft forgings.

If you need high-quality shaft forgings, you can contact us at any time. We are dedicated to serving you.

4140 steel shaft forgings:

4140 steel shaft forgings advantages:

4140 steel forgings are the high-quality alloy structural steel forgings with a wide range of applications in the manufacturing industry. 4140 alloy steel forgings have the characteristics of high strength, high hardenability, good toughness, and small deformation during quenching. Forged steel shaft 4140 chemical composition includes elements such as carbon, silicon, manganese, sulfur, phosphorus, chromium and molybdenum.

High strength: 4140 steel forgings have high strength and have great application value in the field of mechanical manufacturing.
High hardenability: Hardenability refers to the ability of the alloy to maintain a certain plasticity while ensuring hardness during the quenching process. The hardenability of 4140 forged steel is relatively good, which enables it to be processed more precisely in manufacturing.
Good toughness: Due to the good toughness of 4140 steel forgings, it is not easy to break during application and is more durable.
Small deformation during quenching: forged 4140 steel is easy to form small deformation during quenching, thereby improving processability and forming quality.

4140 shaft forgings chemical composition table:

The chemical composition of 4140 steel forgings include carbon, silicon, manganese, sulfur, phosphorus, chromium and molybdenum. 4140 steel forgings are the high-quality alloy structural steel forgings with a wide range of applications in the manufacturing industry.

Steel Grade	C	Si	Mn	P	S	Cr	Mo
AISI 4140	0.380 - 0.430	0.15 - 0.30	0.75 - 1.0	≤0.035	≤0.040	0.80 - 1.10	0.15 - 0.25

Types of Shaft Forgings:

By shape：

Smooth shaft forgings
Stepped shaft forgings
Solid shaft forgings
Hollow shaft forgings

By force conditions:

spindle forgings: only bears bending moment, not torque. For example, a train axle.
transmission shaft forgings: mainly used to transmit torque without bearing bending moment, or only transmit torque and bear very small bending moment. For example, a car’s transmission shaft.
rotating shaft forgings: bears both bending moment and torque, and is the most common shaft in machinery, such as the shafts in various reducers.