1420 Aluminum-lithium alloy forgings is a medium-strength, weldable, low-density, high elastic modulus, and high corrosion resistance aluminum-lithium alloy. It can replace 6061, 6063, 3A21, 5083, 2A12 and other grades of aluminum alloy, and is used in the aerospace field. , Frame, secondary load-bearing parts and other positions to reduce weight, on the basis of ensuring the original load-bearing and anti-corrosion requirements, it has an "immediate" weight reduction effect. Physical property of
1420 Aluminum-lithium alloy forgings
|
Alloy |
Type |
Temper |
Sample Temper |
Thickness
mm |
Sample direction |
Tension strength MPa |
Yield strength MPa |
Elongation% |
|
Not less than |
5A90
(1420) |
Free forgings |
T6 |
T6 |
- |
L |
405 |
205 |
7.0 |
|
LT |
405 |
205 |
7.0 |
|
ST |
350 |
200 |
4.0 |
|
Mould forgings |
T6 |
T6 |
- |
L |
405 |
205 |
7.0 |
|
LT |
405 |
205 |
7.0 |
Process advantage and equipment advantage Henan Chalco adopts vacuum casting method to produce aluminum-lithium alloy ingots to avoid defects such as pores and oxide inclusions in the alloy structure. At the same time, it adopts inert gas stirring method to effectively eliminate the segregation of Zr, Li and other elements to ensure the ingot casting. The chemical composition is uniform. For example, the
1420 aluminum-lithium alloy rolled sheet produced by Henan Chalco has a tensile strength of 460MPa, a yield strength of 272MPa, an elongation of 10%, and a density of 2.47g·cm-3. The product performance is higher than the GJB standard.
