2018 aluminum alloy is a type with good machining performance, and 2018 T61 aviation aluminum forgings are suitable for processing aircraft engine cylinders, heads, pistons and other products.
Why choose Chalco
The quality fully complies with world aviation standards
ASTM B247-17a
AMS 4140
AMS-QQ-A-367
UNS A92018
The production and management conform to the international aviation quality system certification
ISO9001
ISO 14001
AS9100/AS9120
2018 aviation aluminum forging specifications
| FORGING | TYPE | MAX. WEIGHT | MAX. DIMENSION |
| Open Die Forging | Cube | ≤9T |
Length≤7000mm， Width≤2000mm， Height≤500mm |
| Disk | ≤5T | Diameter≤2500mm | |
| Ring | ≤5T |
Outer diameter of quenching parts≤2500mm， Outer diameter of non-quenching parts≤4000mm， Height≤500mm |
|
| Cylinder | ≤5T |
Outer diameter 200-800mm，Length≤2000mm; Outer diameter 801-2000mm，Length≤1500mm; |
|
| Axle | ≤8T |
Length≤7000mm， Diameter≤800mm |
|
| Backward Extrusion | Forged Pipe |
Outer diameter ≤830mm， Inner diameter≤650mm， Length≤1800mm |
|
| Closed Die Forging | Common Closed Die Forgings | - | PVA≤3.0 ㎡（Diameter≤1950mm） |
| Complex Closed Die Forgings | - | PVA≤1.5 ㎡（Diameter≤1400mm） |
2018 chemical composition of aviation aluminum forgings
| Element | Content requirements |
| Al | Remainder |
| Si | ≤0.9 |
| Fe | ≤1.0 |
| Cu | 3.5-4.5 |
| Mn | ≤0.20 |
| Mg | 0.45-0.9 |
| Cr | ≤0.10 |
| Ni | 1.7-2.3 |
| Zn | ≤0.25 |
| Others | Each ≤0.05; total ≤0.15 |
2018 physical or mechanical properties of aviation aluminum forgings
| Physical properties | Value |
| Density | 2.78 g/cm3 |
| Tensile strength | 414 MPa |
| Yield Strength | 324 MPa |
| Elongation | 10% |
| Hardness | 120 HB |
| Thermal expansion coefficient | 23.1 × 10-6/℃ |
| Thermal conductivity | 121 W/(m·K) |
| Welding performance | excellent |
| Corrosion resistance | good |
Features of 2018 aviation aluminum forgings
2018 aluminum alloy forging is a forging material with high strength, high hardness and good wear resistance. It has the following characteristics:
- high strength
- good heat resistance
- good corrosion resistance
- good machinability
- easy to solder
- good machinability
- lightweight
2018 application of aviation aluminum forgings
Aircraft structural parts: 2018 aluminum alloy forgings can be used to manufacture various structural parts of aircraft, such as wings, beams, brackets, etc.
Spacecraft structural parts: 2018 aluminum alloy forgings can also be used to manufacture spacecraft structural parts, such as satellite platforms, frames, antennas and structural supports.
Engine components: 2018 aluminum alloy forgings can also be used to manufacture engine components for aircraft and rockets, such as intake ducts, exhaust ducts, turbines and impellers, etc.
Airborne equipment: 2018 aluminum alloy forgings can also be used to manufacture various airborne equipment and components, such as control systems, communication equipment and electrical connectors.
