Songshun Steel & TOP Steel Manufacturer Supplier in China

Close this search box.
Songshun Steel-Logo

Songshun Steel-Logo

Exploring 4340 Wide Application Fields

AISI 4340 steel is a versatile high-strength alloy steel, also known as GB 34CrNi3Mo steel, and is also a type of gear steel. 4340 has high strength, ductility, toughness, fatigue resistance, hardenability, etc. With these excellent properties, it has become one of the ideal materials in many industries. Songshun Steel has more than 20 years of experience in providing high-quality 4340 steel to customers around the world, and has a deep understanding of the wide range of applications of 4340. If you want to get the best out of 4340 steel, this article will definitely be useful to you.

Transportation Industry

The parts manufactured by 4340 in this field can ensure the high strength, wear resistance, toughness and reliability of these parts, etc., and improve the durability and performance of transportation vehicles such as cars and trains.

It is mainly used to manufacture various crankshafts, gears, camshafts, drive shafts, connecting rods, transmission system parts, couplings, suspension arms, automotive gearboxes and other key components.

Aerospace Field

SAE 4340 steel is widely used in aerospace manufacturing engineering. It can meet the high strength, high toughness and fatigue resistance required for various parts of aircraft and spacecraft, allowing aircraft to remain stable under high speed and high load conditions operation, improving the structural strength and durability of the aircraft.

Alloy steel 4340 is commonly used to manufacture aircraft engine parts, landing gear assemblies, helicopter rotor shafts, bearings, gears, turbojet engine turbine shafts, blades, cams, high-load transmission parts, bolts, fasteners and rocket engines Shell etc.

Energy Field

In the energy industries such as electricity, oil, and natural gas, key components made of 4340 are used. Their creep resistance, corrosion resistance, and stability enable these components to withstand long-term high-temperature and high-pressure environments, ensuring their durability during operation, reliability and durability.

4340 steel is commonly used in the manufacture of drilling equipment, valves, oil drill bits, drill pipes, fasteners, pipe connectors, pumps, generator shafts, rotors and other key components.

Architecture and Engineering Fields

In this field, the excellent properties of ASTM 4340 steel can improve the service life, safety and reliability of buildings and construction machinery and equipment.

It is widely used in the manufacture of transmission parts and key structural parts of various cranes, excavators, loaders, cranes, bulldozers, concrete mixers, heavy machinery and equipment, etc. It is also used in the manufacture of various large-scale engineering and construction components, such as bridges, pressure vessels, beams, columns, etc.

Military Field

The parts manufactured by 4340 in the military field can adapt to complex and harsh environments. It is usually used to manufacture parts for armored vehicles, military aircraft, ships, ordnance hardware, weapons and other equipment.

Marine Area

High-quality 4340 steel is used in the marine field because of its high strength, corrosion resistance, and wear resistance. It can withstand seawater corrosion and hull stress in the marine environment, ensuring the reliability of parts made with it in the marine environment, operation, safety and stability.

In summary, 4340 has a wide range of applications. In addition to the above fields, it is also used in industrial mold manufacturing, chemical industry, tool manufacturing, etc. I believe that in the future, with the rapid development of modern engineering technology, the application fields of 4340 materials will show broader prospects. Songshun Steel specializes in providing the best aisi 4340 steel, providing professional the points you must know about 4340 steel and technical support. Welcome to inquire at any time.


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?