FA 6825 H14SR Aluminium Fin Alloy – High Strength & Sag Resistance
A strong material with good sag resistance. This alloy is suited for controlled atmosphere brazing.
The FA68XX alloy family is a reliable and thoroughly evaluated fin alloy family that is characterised by a high post braze strength, and a good sagging resistance during brazing. The alloy is designed to form large grains during brazing, which is beneficial for the sagging behaviour and hinders braze metal penetration into the core. The high manganese and silicon content contribute to a higher strength after brazing. The corrosion resistance of the fin alloys is good, with a low self corrosion rate. FA68xx is available in four different zinc levels to allow for a tailored cathodic protection of tubes and fillets.
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Properties
Dimension
| Property | Value |
|---|---|
Dimensions | <p>Standard process capabilities:</p> <p>Width: 10-1400mm</p> <p>Thickness 0.050-3.18mm</p> |
Mechanical
| Property | Value | Comment |
|---|---|---|
Tensile strength | 180 - 220 MPa | |
Yield strength | 161 MPa | RP02 |
Thermal
| Property | Value |
|---|
Electrical
| Property | Value | Comment |
|---|---|---|
Corrosion potential | -880 mV | |
Electrical resistivity | 3.4e-08 - 4.3e-08 Ω·m | Changes depending on temper |
Chemical properties
| Property | Value |
|---|---|
Aluminium | Balance |
Copper | 0 - 0.05 % |
Iron | 0 - 0.4 % |
Magnesium | 0 - 0.05 % |
Manganese | 1.4 - 1.8 % |
Silicon | 0.65 - 1 % |
Zinc | 2.3 - 2.7 % |
Zirconium | 0.05 - 0.2 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Automotive, Heat Exchangers | |
| Processing history | Temper: H14SR | |
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