Commercially Pure Aluminum
1100
Maximum thermal and electrical conductivity with excellent corrosion resistance and formability.
59% IACS Conductivity
222 W/m·K Thermal Cond.
2.71 g/cm³ Density
1100 is the strongest alloy in the 1xxx series, with a minimum of 99.0% aluminum. It is the preferred choice when conductivity and corrosion resistance matter more than mechanical strength.
International Nomenclature
| Standard | Designation |
|---|---|
| AA (USA) | 1100 |
| EN (Europa) | EN AW-1100 · Al99.0Cu |
| JIS (Japón) | A1100 |
Chemical Composition
| Element | Symbol | Percentage |
|---|---|---|
| Aluminum | Al | ≥99.0% |
| Silicon + Iron | Si+Fe | ≤0.95% |
| Copper | Cu | 0.05–0.20% |
| Manganese | Mn | ≤0.05% |
| Zinc | Zn | ≤0.10% |
Physical Properties
| Property | Value |
|---|---|
| Density | 2.71 g/cm³ |
| Melting Range | 643–657 °C |
| Thermal Conductivity | 222 W/m·K |
| Electrical Conductivity | 59% IACS |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (UTS) | 90–124 MPa |
| Yield Strength | 34–117 MPa |
| Elongation | 9–45% |
| Hardness | ~32 HB |
Key Characteristics
- Highest thermal and electrical conductivity among commonly extruded alloys
- Excellent corrosion resistance in atmospheric environments
- Outstanding formability: bending, deep drawing, spinning, roll forming
- Non-heat-treatable; strengthened by cold working only
Industries & Applications
Electrical
Heat sinks, bus bars, electrical conductors
HVAC
Heat exchanger fins, fin stock
Food & Chemical
Cooking utensils, chemical processing equipment, containers
Special Notes
1100 is the mechanically strongest alloy in the 1000 series. It cannot be heat-treated, but it excels in applications where thermal/electrical conductivity and corrosion resistance matter more than structural strength.
Need 1100?
We manufacture this alloy in ingots, donuts, and bars to your exact specifications.