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Looser Aluminium Bronze 79 (LAB 79) – CuAl10,5Ni5,1Fe4,8 AMS 4590 (USA)
This wrought material involves an American aluminium multi-material, which is not according to the DIN norm.
Looser Aluminium Bronze 79 is a construction material with highest strength properties, even at elevated temperatures; high permanent fatigue strength; good corrosion resistance against neutral and acidic, aqueous media as well as seawater; good resistance to scaling, erosion and cavitation.
The choice of alloys is made primarily according to the required strength properties. The alloy and therefore the scopes of application are very similar to Looser Aluminium Bronze 798.
Chemical composition
|
Element |
Cu |
Al |
Ni |
Fe |
Mn |
Zn |
Co |
Sn |
Si |
Cr |
Pb |
Other |
|
Min. [%] |
- |
10 |
4.2 |
4 |
- |
- |
- |
- |
- |
- |
|
|
|
Max. [%] |
Rest |
11 |
6 |
5.5 |
1.5 |
0.3 |
0.2 |
0.25 |
0.15 |
0.05 |
0.03 |
0.25 |
Mechanical properties
|
Round bars |
Range I* |
Range II** |
|
|
Yield point Rp0,2 |
[N/mm2] |
≥ 600 |
≥ 600 |
|
Tensile strength Rm |
[N/mm2] |
≥ 890 |
≥ 860 |
|
Brinell hardness |
[HB] |
~ 240 |
~ 240 |
|
Elongation at fracture A |
[%] |
≥ 6 |
≥ 6 |
* Range I in accordance with USA-Standard AMS 4590 (Aerospace Material Specification)
** Range II alloy in accordance with AMS 4590, mechanical properties are not standardised.
Forms of delivery
|
Range [mm] |
Tolerance [mm] |
Manufacturing method |
|
|
Round bars |
Ø 55 - 85 |
0/+1 |
pressed and hardened |
|
Round bars |
Ø 110 - 135 |
0/+1 |
forged and hardened and pre-turned |
Looser Aluminiumbronze 79 - Availability
- Round bar sizes from Ø 55–135 mm are available from stock.
- Custom production with different dimensions in consideration of the minimum production quantity.
- Forged rings, bushings and edge profiles onto the base sizes or contour pre-fabricated.
- Ready-to-install parts in accordance with customer drawing.
We will be more than pleased to advise you.
Subject to technical modifications; no responsibility is accepted for the accuracy of this information.
.
