DIN 1725-1 Grade 3.4415 – High-Performance Al–Zn Alloy for Corrosion Protection
The alloy AlZn1 is nature hard. A strength increase can be achieved only by cold forming, not by a purposeful heat treatment. It is used due to its good corrosion resistance mainly as plating material. The alloy AlZn1 is well hot and cold formable and weldable, but it can be worked on less well splinter-giving. Their thermal and electrical conductivity is relatively good, the attainable mechanical properties are low. Application: As sacrificial anodes for heat exchangers as corrosion protection for high-strenghth sheet metals (roll-bonded cladding).
Properties
General
| Property | Temperature | Value | Related Standards |
|---|---|---|---|
Density | 2.72 g/cm³ | EN 573-3 | |
20.0 °C | 2.72 g/cm³ | DIN 1725-1, EN 573-3, EN 573-4 |
Mechanical
| Property | Value | Comment |
|---|---|---|
Elastic modulus | 69.0 - 72.0 GPa | Typical for Wrought 7000 Series Aluminium |
Plane-Strain Fracture Toughnes | 22.0 - 35.0 MPa·√m | Typical for Wrought 7000 Series Aluminium |
Poisson's ratio | 0.33 [-] | Typical for Wrought 7000 Series Aluminium |
Shear modulus | 26.4 - 27.1 GPa | Typical for Wrought 7000 Series Aluminium |
Thermal
| Property | Temperature | Value | Related Standards | Comment |
|---|---|---|---|---|
Coefficient of thermal expansion | 100.0 °C | 2.36e-05 1/K | DIN 1725-1, EN 573-3, EN 573-4 | |
Melting point | 465.0 - 655.0 °C | Typical for Wrought 7000 Series Aluminium | ||
Specific heat capacity | 795.0 - 1050.0 J/(kg·K) | Typical for Wrought 7000 Series Aluminium | ||
Thermal conductivity | 20.0 °C | 122.0 W/(m·K) | DIN 1725-1, EN 573-3, EN 573-4 |
Electrical
| Property | Value | Comment |
|---|---|---|
Electrical conductivity | 18000000.0 - 34000000.0 S/m | Typical for Wrought 7000 Series Aluminium |
Electrical resistivity | 2.9e-08 - 5.6e-08 Ω·m | Typical for Wrought 7000 Series Aluminium |
Chemical properties
| Property | Value | Related Standards |
|---|---|---|
Copper | 0.1 % | DIN 1725-1, EN 573-3, EN 573-4 |
Magnesium | 0.1 % | DIN 1725-1, EN 573-3, EN 573-4 |
Manganese | 0.1 % | DIN 1725-1, EN 573-3, EN 573-4 |
Zinc | 0.8 - 1.3 % | DIN 1725-1, EN 573-3, EN 573-4 |
Technological properties
| Property | ||
|---|---|---|
| Brazing | Excellent | |
Metal
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