Aluminum 7178
Material Data Sheet
Aluminum Alloy 7178, comprised of copper and magnesium as its primary alloying elements, offers uncompromising strength and accommodates a number of different metalworking processes.
Chemical Composition
| Element | Content(%) |
|---|---|
| Aluminum, Al | 88.1 |
| Zinc, Zn | 6.8 |
| Magnesium, Mg | 2.7 |
| Copper, Cu | 2.0 |
| Chromium, Cr | 0.26 |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 2.83 g/cc | 0.102 lb/in3 |
| Melting Point | 477 – 629 °C | 890 – 1165 °F |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 160 | 160 |
| Hardness, Knoop | 205 | 205 |
| Hardness, Rockwell A | 55.3 | 55.3 |
| Hardness, Rockwell B | 90 | 90 |
| Hardness, Vickers | 189 | 189 |
| Ultimate Tensile Strength | 607 MPa | 88000 psi |
| Tensile Yield Strength | 538 MPa | 78000 psi |
| Elongation at Break | 10% | 10% |
| Modulus of Elasticity | 71.7 GPa | 10400 ksi |
| Poisson’s Ratio | 0.33 | 0.33 | Fatigue Strength | 150 MPa | 21800 psi |
| Shear Modulus | 27 GPa | 3920 ksi |
| Shear Strength | 360 MPa | 52200 psi |
Thermal Properties
| Properties | Metric | Imperial |
|---|---|---|
| Specific Heat Capacity | 0.856 J/g-°C | 0.205 BTU/lb-°F |
| Thermal Conductivity | 125 W/m-K | 870 BTU-in/hr-ft²-°F |
Applications
Aluminum 7178 is used in the following application areas:
- Petroleum refineries
- Boilers
- Heat exchangers
- Condensers
- Pipelines
- Cooling towers
- Steam exhausts
- Electric generation plants
