380 (A380)
The most requested aluminum die casting alloy in North America, excellent combination of castability, strength, and cost.
380 (A380) is the most widely used die casting alloy in North America. With ~8.5% silicon and ~3.5% copper, it offers excellent fluidity, good mechanical strength, and is very economical to produce from secondary aluminum. It is the standard for automotive parts, appliances, and industrial die cast components.
International Nomenclature
| Standard | Designation |
|---|---|
| AA (USA) | 380.0 / A380.0 |
| EN (Europa) | EN AC-46000 · AlSi9Cu3(Fe) |
| DIN (Alemania) | G-AlSi9Cu3 / 3.2163 |
| JIS (Japón) | ADC10 |
Chemical Composition
| Element | Symbol | Percentage |
|---|---|---|
| Aluminum | Al | Balance |
| Silicon | Si | 7.5–9.5% |
| Copper | Cu | 3.0–4.0% |
| Iron | Fe | ≤1.30% (380) · ≤1.00% (A380) |
| Zinc | Zn | ≤3.00% |
| Manganese | Mn | ≤0.50% |
| Magnesium | Mg | ≤0.10% |
| Nickel | Ni | ≤0.50% |
Physical Properties
| Property | Value |
|---|---|
| Density | 2.71 g/cm³ |
| Melting Range | 521–593 °C |
| Thermal Conductivity | 96 W/m·K |
| Electrical Conductivity | ~27% IACS |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (UTS) | 320–330 MPa |
| Yield Strength | 160–175 MPa |
| Elongation | 2.5–3.5% |
| Hardness | ~80 HB |
Key Characteristics
- The most widely used die casting alloy in North America
- Excellent fluidity and castability for complex thin-wall parts
- Copper provides good mechanical strength and machinability
- Very economical due to compatibility with secondary aluminum
- Tolerant of higher iron levels without significant degradation
Industries & Applications
Automotive
Transmission cases, engine blocks, timing covers, brackets, pump housings
Appliances
Motor housings, frames, structural appliance components
Industrial
Power tools, valves, connectors, machinery equipment
Special Notes
380 is the first choice for die casting in North America. Its higher copper content vs. 383/ADC12 gives it better strength but lower corrosion resistance. The A380 version limits iron to ≤1.00% for better ductility. It is equivalent to Japanese ADC10.
Need 380 (A380)?
We manufacture this alloy in ingots, donuts, and bars to your exact specifications.