Alloy Steel 4340 is a nickel-chromium-molybdenum alloy steel known for its exceptional toughness and high fatigue strength. It is the premium choice for aerospace and defense applications requiring maximum strength and reliability.
57/100
±0.01 mm
Carbon & Alloy Steel
| Property | Value |
|---|---|
| Tensile Strength | 745 MPa (108 ksi) |
| Yield Strength | 470 MPa (68 ksi) |
| Hardness | 217 HB |
| Density | 7.85 g/cm³ |
| Machinability Rating | 57/100 |
| Thermal Conductivity | 44.5 W/m·K |
| Melting Point | 1,427–1,477 °C |
| Tolerance | ±0.01 mm |
Landing gear
Power transmission gears
Crankshafts
Heavy-duty shafts
Structural fasteners
Upload your CAD file and receive a detailed quote within 24 hours. No minimum order quantity.
Get a Free Quote