2A70 aluminum alloy forgings have the advantages of strong plasticity, easy forging, low density and good high temperature resistance. In aircraft manufacturing, it is mostly used for forging engine pistons, impellers, discs, compressor blades and parts used at high temperatures.
Why choose Chlaco Aluminum's 2A70 aluminum forgings?
Quality could full meet world wide aviation standard
GJB 2351-2004
HB 5204-96
Production and management comply with international aviation quality system certification
AS9100
OHSAS 18001
ISO14001
ISO 9001
NADCAP HT
NADCAP NDT
IATP16949
Specs of 2A70 aluminum forgings
| 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） |
Chemical composition of 2A70 aluminum alloy
| 2A70 Alloy % | |
| Si | 0.35 |
| Fe | 1.0-1.50 |
| Cu | 1.9-2.50 |
| Mn | 0.20 |
| Mg | 1.40-1.80 |
| Ni | 1.0-1.5 |
| Zn | 0.30 |
| Al | Remainder |
Mechanical property of 2A70 aluminum forgings
| Standard | GJB 2351 | HN 5204 | ||
| Type | Free forgings and Die forgings | Free forgings | Die forgings | |
| Temper | T6 | T6 | T6 | |
| L | Rm/MPa | 375 | 375 | 380 |
| Rp0.2/MPa | - | - | - | |
| A5% | 4.0 | 5.0 | 5.0 | |
| LT | Rm/MPa | 375 | 375 | 380 |
| Rp0.2/MPa | - | - | - | |
| A5% | 4.0 | 5.0 | 5.0 | |
| ST | Rm | 375 | 375 | 380 |
| A5% | 4.0 | 5.0 | 5.0 | |
| HBS | 110 | 110 | 110 | |
Features of 2A70 aluminum forgings
Good thermal conductivity: 2A70 aluminum alloy has good thermal conductivity, blanks of any thickness do not need to be preheated, and can be directly heated in a high-temperature furnace, and the blanks are required to be heated to the upper limit of the forging temperature.
High strength: 2A70 aluminum forgings have high strength and rigidity, can withstand large loads and vibrations, and can meet the high requirements of the aero-engine environment.
Good corrosion resistance: 2A70 aluminum forgings have good corrosion resistance and can be used in high temperature and humid environments for a long time without corrosion.
Good thermal stability: 2A70 aluminum forgings have good heat resistance and thermal stability, and can maintain stable performance under high temperature and extreme climate conditions.
Easy to process: 2A70 aluminum forgings are easy to process and form, and can be processed and manufactured by forging, casting, machining and other processes.
Good weldability: 2A70 aluminum forgings have good weldability and machinability, which is convenient for assembly and maintenance.
Uses of 2A70 aluminum forgings
When the flight speed of the aircraft exceeds twice the speed of sound, the surface skin temperature of the aircraft can reach more than 200°C, and it will reach 250°C when flying at low altitude. At present, 2A70 aluminum alloy is mostly used in the manufacture of supersonic aircraft in various countries. one of the important materials.
Aeroengines: 2A70 aluminum forgings are widely used in the impellers, blades, compressor blisks, turbine disks, turbine blades and other components of aeroengines, which can improve the working efficiency and reliability of the engines.
Flight control system: 2A70 aluminum forgings can be used to manufacture control components such as joysticks, flaps, tail rudders, and rudder surfaces of aircraft, which can improve the response speed and accuracy of the control system.
Fuselage structure: 2A70 aluminum forgings can be used to manufacture aircraft fuselage frames, brackets, support structures and other components, which can improve the rigidity and strength of the fuselage and enhance the structural stability of the entire aircraft.
Missile engine: the 2A70 aluminum alloy rotor is an important stress-bearing component of the missile engine. Its shape is complex. There are 23 twisted radial thin blades evenly distributed along the periphery of the wheel rim, and it is manufactured by closed forging.
What precautions should be taken when purchasing 2A70 aluminum forgings?
If you want to buy 2A70 aluminum forgings, here are some things to pay attention to:
Determine the specifications and sizes: before purchasing 2A70 aluminum forgings, you need to determine the required specifications and sizes in order to choose the appropriate supplier and product model. This usually requires reference to engineering drawings, technical requirements, or actual needs.
Choose the right supplier: when purchasing 2A70 aluminum forgings, you need to choose the right supplier. A good supplier should have a good reputation, rich experience and technical strength, and at the same time be able to provide high-quality products and reasonable prices.
Check the quality certificate: when purchasing 2A70 aluminum forgings, you need to check the quality certification documents provided by the supplier, such as material certificates, forging quality certificates, forging chemical composition analysis reports, mechanical performance test reports, etc., to ensure that the products meet the requirements of relevant standards and specifications Require.
Pay attention to packaging and transportation: when purchasing 2A70 aluminum forgings, you need to pay attention to the packaging and transportation of the product to avoid damage and quality problems. Generally speaking, aluminum forgings should be properly packaged to prevent impact, extrusion or other damage during transportation.
Keep in touch with suppliers: after purchasing 2A70 aluminum forgings, you need to keep in good touch with suppliers to keep abreast of product delivery status, quality status and other relevant information in order to solve any problems and risks in a timely manner.
