SAE4140 AISI 4130 4140 4340 Forged Steel Shafts
We are a professional manufacturer and exporter of SAE4140 AISI 4130 4140 4340 Forged Steel Shafts in China.
What is a forged shaft?
A Forged Steel Shaft is a type of shaft that is made through the process of forging. Forging involves heating a block of steel and then shaping it using compressive forces. This process helps to create a stronger and more durable shaft compared to other manufacturing methods. Forged steel shafts are normally used in various industries, including automotive, arespace, construction, and machinery. They are known for their high strength, resistance to wear and tear, and ability to withstand heavy loads and extreme conditions. The forging process allows for precise control over the grain structure of the steel, resulting in improved mechanical properties such as increased tensile strength and toughness. This makes forged steel shafts ideal for applications that require high performance and reliability. Overall, forged steel shafts are valued for their superior quality, durability, and ability to withstand demanding conditions, making them a popular choice in many industries.
SAE 4140 is a high-strength alloy steel commonly used in various industrial applications, especially in heavy-duty and high-stress environments. Known for its excellent combination of strength, toughness, and wear resistance, 4140 is typically used in the manufacturing of forged components like gears, shafts, and crankshafts. This steel is heat-treated (quenched and tempered) to improve its mechanical properties, making it suitable for demanding applications in industries such as automotive, aerospace, and machinery manufacturing.
It provides high tensile strength, good fatigue resistance, and excellent machinability. SAE 4140 offers versatility in its applications, ranging from industrial machinery parts to structural components, making it ideal for critical applications where both strength and durability are essential.
Chemical Composition of SAE 4140:
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.38 – 0.43 |
| Chromium (Cr) | 0.80 – 1.10 |
| Molybdenum (Mo) | 0.15 – 0.25 |
| Manganese (Mn) | 0.75 – 1.00 |
| Silicon (Si) | 0.15 – 0.30 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
Mechanical Properties of AISI 4140
| Property | Value |
|---|---|
| Tensile Strength | 655-1100 MPa |
| Yield Strength | 415-850 MPa |
| Hardness (Brinell) | 197-237 HB (Annealed) |
| Elongation (%) | 20-25% |
| Impact Toughness | High |
Applications of AISI 4140 Shaft
-
Crankshafts & Camshafts – Used in automotive and marine engines.
-
Drive Shafts & Axles – For trucks, heavy-duty machinery, and aircraft.
-
Gears & Pinions – High-strength transmission components.
-
Oil & Gas Industry – Drill collars, tool joints, and valves.
-
Industrial Rollers – Steel mills and manufacturing equipment.
Other Materials available for Forged shaft
Alloy Steel ( 4140, 4340,S355JR,Forging St52 S355JR)
Stainless Steel (e.g., 304, 316, 17-4 PH)
Super Alloys (e.g., Inconel, Monel, Titanium for high-performance applications)
A SAE 4140 forged shaft is a high-strength, chromium-molybdenum alloy steel shaft known for its excellent toughness, wear resistance, and high tensile strength.
