Songshun Steel & TOP Steel Manufacturer Supplier in China

Close this search box.
Songshun Steel-Logo

Songshun Steel-Logo

AISI 4140 Preferred Steel for Manufacturing Gears

In modern industry, gears are key components in mechanical transmission systems in many fields, and their quality and performance affect the operating efficiency and life of mechanical equipment or products. As a leading alloy steel supplier, Songshun ensures the quality and performance of 4140 steel of various specifications, making many manufacturers of automobiles, machinery, aerospace, transportation, etc. prioritize aisi 4140 to manufacture gears. This article will explore why aisi 4140 is preferred for manufacturing gears, and why Songshun is your preferred steel supplier.

AISI 4140 For Manufacturing Gears Advantages

  • High strength: The tensile strength of aisi 4140 can reach 655 MPa and above, and the ultimate tensile strength can reach 1020 MPa. Its high strength can withstand greater pressure and load during the gear manufacturing process, and at the same time enable the manufactured gears to perform well under high loads and high pressures, and can operate stably at high speeds.
  • Excellent processing performance: 4140 material is easy to grind, cut, drill, cut, polish, polish and other processes. It is suitable for various gear processing technologies, can achieve efficient processing, and improve the accuracy, surface quality and finish of the gears.
  • Good toughness and impact resistance: The toughness and impact resistance of this steel can enable the manufactured gears to maintain stable performance when subjected to impact loads, prevent breakage and breakage during operation, and ensure the safety performance of the gears.
  • Excellent wear resistance: Gears experience multiple frictions during operation, and the high wear resistance of 4140 can keep the gear surface smooth for a long time, reduce wear and impact friction, and extend service life.
  • Good heat treatment and surface treatment: aisi 4140 can obtain ideal organization and performance through heat treatment and surface treatment processes, including quenching, tempering, carburizing, chrome plating, nitriding, etc., improve the transmission efficiency, service life, performance, stability and quality of the gear, etc., and meet the needs of the gear in different working environments.
  • Excellent anti-fatigue performance: Gears are repeatedly subjected to loads during operation. If the material’s anti-fatigue performance is poor, fatigue fracture is likely to occur, leading to gear failure. However the anti-fatigue performance of AISI 4140 steel is a key indicator of gears, which can effectively resist the fatigue damage caused by such repeated loads, thereby extending the service life of the gears.

Application Scenarios Of Gear Manufacturing By aisi 4140

1. Automobile transmission gears, large gears for locomotive traction
2. Supercharger transmission gears, pressure ship gears
3. Machine tool gears, wind power generation gears
4. Engineering machinery gears, heavy-duty gears
5. High-speed gears, high-precision gears
6. Gear parts, various equipment gears

Songshun Steel: Reliable aisi 4140 Supplier

At Songshun, we are committed to consistent high quality, insisting on providing professional services, providing customers with the best solutions, becoming customers’ preferred steel supplier, and achieving long-term win-win cooperation.

Rich Inventory, Good Service
Songshun can provide aisi 4140 of various specifications that others do not have. We have our own warehouse and can meet the size you need. We also provide a full range of services, whether it is processing, testing, packaging and other services, we are professional and can provide you with technical support and solutions.

Ensure Quality, Strict Testing
Songshun ensures that the delivered aisi 4140 materials meet international quality standards or customer requirements. We provide a variety of testing services and adhere to strict quality control processes to ensure that you are provided with high-quality and stable steel. This is also an important advantage for us to win high customer satisfaction.

Good Process Technology And High Efficiency
Our engineers understand the manufacturing process of each steel grade, have advanced forging, heat treatment and processing technology, good technology, high production efficiency, and can respond quickly and arrange delivery as soon as possible.

The advantages of aisi 4140 make it an ideal material for manufacturing gears, and it is suitable for manufacturing various types of gears. If the purchased 4140 steel is of poor quality, it will also cause various problems for aisi 4140 gears. However, Songshun has optimized the heat treatment process of aisi 4140 steel to ensure that it can provide you with the best quality and price 4140/42CrMo4 steel, and produce high-performance high-quality products.


Steel Round Bar

Songshun Steel-Logo

Dongguan Songshun Mould Steel Co., Ltd.

Welcome to contact us at any time through the following ways
Or you can email directly to

Open chat
Hi, this is Songshun Steel(TOP Steel Manufacturer Supplier in China)
What can we help you?