4340 Alloy Bar
4340 alloy steel bar is used heavily in the aerospace industry due to its ultra-high strength. When heat treated it is known for its toughness while preserving good fatigue strength. For highly stressed parts it is excellent choice. It can be machined by all customary methods. This material is available in both vacuum melt (VM) and air melt (AM).
Applications:
- Aircraft Landing Gear
- Power Transmission Gears
- Structural Use Applications
Alloy Bar PDF Download
SKU | Description | DFARS | Manufacture Method | Diameter | Shape | Specification |
---|---|---|---|---|---|---|
Sku: A5798 | Description: 4340 N&T VAC AMS6414 .6875 DIA | DFARS: No | Manufacture Method: VACUUM ARC REMELT | Diameter: 0.6875 | Shape: ROD/BAR ROUND | Specification: AMS6414 |
Sku: A5801 | Description: 4340 N&T VAC AMS6414 1.1875 DIA | DFARS: No | Manufacture Method: VACUUM ARC REMELT | Diameter: 1.1875 | Shape: ROD/BAR ROUND | Specification: AMS6414 |
Sku: 08199 | Description: 4340 AIR MELT AMS6415 1.250DIA | DFARS: Yes | Manufacture Method: Air Melt | Diameter: 1.2500 | Shape: ROD/BAR ROUND | Specification: AMS6415 |
Sku: 08146 | Description: 4340 N&T VAC MELT AMS 6414 1.250DIA | DFARS: Yes | Manufacture Method: VACUUM ARC REMELT | Diameter: 1.2500 | Shape: ROD/BAR ROUND | Specification: AMS6414 |
Sku: 74978 | Description: 4340 E4 MILS-5000 1.000 HEX | DFARS: No | Manufacture Method: Air Melt | Diameter: 1.0000 | Shape: ROD/BAR HEX | Specification: AMS-S-5000 |
Sku: 07977 | Description: 4340 AIR MELT AMS 6415 1.00 DIA | DFARS: Yes | Manufacture Method: Air Melt | Diameter: 1.0000 | Shape: ROD/BAR ROUND | Specification: AMS6415 |
Sku: 07971 | Description: 4340 N&T VAC MELT AMS 6414 1.000DIA | DFARS: Yes | Manufacture Method: VACUUM ARC REMELT | Diameter: 1.0000 | Shape: ROD/BAR ROUND | Specification: AMS6414 |
Sku: 71350 | Description: 4340 REC BAR 1 X 2.5 | DFARS: No | Manufacture Method: Air Melt | Diameter: 1.0000 | Shape: BAR RECTANGULAR | Specification: AMS-S-5000 |
Sku: 08204 | Description: 4340 AIR MELT AMS 6415 1.500DI | DFARS: Yes | Manufacture Method: Air Melt | Diameter: 1.5000 | Shape: ROD/BAR ROUND | Specification: AMS6415 |
Sku: 08151 | Description: 4340 N&T VAC MELT AMS 6414 1.500DIA | DFARS: Yes | Manufacture Method: VACUUM ARC REMELT | Diameter: 1.5000 | Shape: ROD/BAR ROUND | Specification: AMS6414 |
Minimum Properties | Tensile Strength , psi | 140,000 |
Yield Strength, psi | 120,000 | |
Elongation | 14% | |
Hardness | Rc 32/39 | |
Chemistry | Carbon( C) | .38 -.43% |
Chrome (Cr) | 0.70- 0.90% | |
Manganese (Mn) | 0.60-0.80% | |
Molybdenum (Mo) | 0.20 - .30% | |
Nickel ( Ni) | 1.65-2.0% | |
Phosphorus (P) | 0.030% | |
Sulphur (S) | 0.040% | |
Silicon (Si) | 0.15- 0.35% |