4340 Alloy Steel
Qilu is an 4340 alloy steel manufacturer that offers a wide selection of sizes, shapes, and thicknesses.
Professional 4340 Alloy Steel Supplier
4340 steel is a structural alloy steel. It is famous for high strength and good comprehensive.It’s called 4340 in AISI (American Iron and Steel Institute) standard.It is also commonly found in steel number system in other countries, such as the 30CrNi2Mo in GB/T 3077 or the SCM440 in JIS G4340. 4340 steel has high chromium, nickel and molybdenum content.Because of these elements, it has excellent mechanical properties.
Shape Customization
Round Steel:
Rolled size range: 10-260mm
Forged size range: 70-800mm
Square Steel:
Thickness size range: 10-500mm
width size range: 200-810mm
Forged Rings:
Maximum outside diameter size can be reached 1000mm
Grade Of Different Country And Chemical Composition
Chemical composition:
| Grade | C | Si | Mn | P | S | Cr | Ni |
| 4340 | 0.38-0.43 | 0.15-0.35 | 0.6-0.8 | ≤ 0.035 | ≤ 0.04 | 0.7-0.9 | 1.65-2.0 |
Surface condition
Qilu Alloy Steel Series
Application Of 4340 Alloy Steel
Luft- und Raumfahrt
It is used for manufacturing aircraft landing gear, engine shafts and other parts that require high strength.
Automotive industry
It is used for manufacturing high-performance crankshafts, connecting rods, gears and so on.
Military industry
It is used for manufacturing certain parts of weapon systems and military equipment.
Industrial machinery
It is used for manufacturing heavy-duty bearings, gears and other components that bear high loads.
Oil and gas extraction
It is used for manufacturing drilling tools and equipment components resistant to high pressure and wear.
Qilu 4340 Alloy Steel
Leading 4340 Alloy Steel Manufacturer
4340 alloy steel, also known as 1.6511 steel, is commonly used in heavy duty axles, shafts, heavy duty gears, spindles, pins, studs, forged hydraulics, forged steel crankshafts, and more.
Due to the special heat treatment of 4130 alloy steel carbon, which gives it better hardenability and higher CVN impact toughness, you can rest assured that you can use this material without worrying about easy damage.
Contact us to buy now!
Due to the special heat treatment of 4130 alloy steel carbon, which gives it better hardenability and higher CVN impact toughness, you can rest assured that you can use this material without worrying about easy damage.
Contact us to buy now!