6063
The most extruded alloy in the world, preferred for its superior surface finish and excellent anodizing response.
6063 is the most commonly extruded aluminum alloy in the world, known as "architectural aluminum." It offers the best combination of extrudability, surface finish, and corrosion resistance in the 6xxx series.
International Nomenclature
| Standard | Designation |
|---|---|
| AA (USA) | 6063 |
| EN (Europa) | EN AW-6063 · AlMg0.7Si |
| DIN (Alemania) | AlMgSi0.5 / 3.3206 |
| ISO | AlMg0.7Si |
| JIS (Japón) | A6063 |
| BS (Reino Unido) | H9 |
Chemical Composition
| Element | Symbol | Percentage |
|---|---|---|
| Aluminum | Al | Balance |
| Silicon | Si | 0.20–0.60% |
| Magnesium | Mg | 0.45–0.90% |
| Iron | Fe | ≤0.35% |
| Copper | Cu | ≤0.10% |
| Manganese | Mn | ≤0.10% |
| Chromium | Cr | ≤0.10% |
| Zinc | Zn | ≤0.10% |
| Titanium | Ti | ≤0.10% |
Physical Properties
| Property | Value |
|---|---|
| Density | 2.70 g/cm³ |
| Melting Range | 616–654 °C |
| Thermal Conductivity | 200 W/m·K |
| Electrical Conductivity | ~53% IACS |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (UTS) | 190–240 MPa (T6) |
| Yield Strength | 160–214 MPa (T6) |
| Elongation | 8–12% |
| Hardness | ~73 HB |
Key Characteristics
- The most commonly extruded aluminum alloy in the world
- Excellent anodizing response producing smooth, attractive finishes
- Superior corrosion resistance vs. 6061 (lower copper content)
- Excellent formability and extrudability into complex cross-sections
- Self-healing Al₂O₃ protective oxide layer
Industries & Applications
Architecture
Window/door frames, curtain walls, storefronts, sign frames
Construction
Railings, balustrading, shop fittings, structural trim
Piping/Tubing
Irrigation systems, HVAC ducting, fluid transport
Transportation
Truck frames, trailer floors, bus structures
Special Notes
6063 is the default alloy when surface appearance matters. Its low copper content is the key reason for its better anodizing response compared to 6061. We manufacture bars and ingots optimized for extruders.
Need 6063?
We manufacture this alloy in ingots, donuts, and bars to your exact specifications.