6082
The European standard structural alloy, with the highest strength in the 6xxx series and excellent corrosion resistance.
6082 (AlSi1MgMn) is the most widely used structural alloy in Europe, equivalent to American 6061 but with better mechanical strength and similar corrosion resistance. Its manganese content (0.40–1.0%) provides superior grain control, achieving the highest mechanical properties in the 6xxx series. Rapidly growing in Mexico for structural automotive applications like crash management bars, bumper beams, and subframe components.
International Nomenclature
| Standard | Designation |
|---|---|
| AA (USA) | 6082 |
| EN (Europa) | EN AW-6082 · AlSi1MgMn |
| DIN (Alemania) | AlMgSi1 / 3.2315 |
| ISO | AlSi1MgMn |
| BS (Reino Unido) | H30 |
Chemical Composition
| Element | Symbol | Percentage |
|---|---|---|
| Aluminum | Al | Balance |
| Silicon | Si | 0.70–1.30% |
| Magnesium | Mg | 0.60–1.20% |
| Manganese | Mn | 0.40–1.00% |
| Iron | Fe | ≤0.50% |
| Copper | Cu | ≤0.10% |
| Chromium | Cr | ≤0.25% |
| Zinc | Zn | ≤0.20% |
| Titanium | Ti | ≤0.10% |
Physical Properties
| Property | Value |
|---|---|
| Density | 2.71 g/cm³ |
| Melting Range | 585–650 °C |
| Thermal Conductivity | 170 W/m·K |
| Electrical Conductivity | ~42% IACS |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (UTS) | 310–340 MPa (T6) |
| Yield Strength | 260–310 MPa (T6) |
| Elongation | 8–12% |
| Hardness | ~100 HB |
| Fatigue Strength | 95 MPa (5×10⁸ cycles) |
Key Characteristics
- Highest mechanical properties in the 6xxx series (UTS ~340 MPa)
- Manganese (0.40–1.0%) provides superior grain control and strength
- Better mechanical strength than 6061 with similar corrosion resistance
- Low copper content (≤0.10%) improves anodizing response vs. 6061
- Rapid growth in Mexico for structural automotive applications
- EN 1090 certification for structural construction applications
Industries & Applications
Structural Automotive
Crash management bars, bumper beams, subframe components, door reinforcements
Construction
Structural beams, bridge frameworks, offshore platforms, building frameworks
Transportation
Railway car structures, trailer floors, bus bodies
Marine
Ship superstructures, decks, ladders, railings
Special Notes
6082 is the European EN 755/EN 12020 standard for structural profiles, equivalent to North American 6061 but with superior mechanical properties. Its Mn content (0.40–1.0%) — much higher than 6061's (≤0.15%) — is the key to its superior strength. In Mexico it is growing rapidly due to demand from European OEMs (VW, Audi, BMW) specifying 6082 for structural automotive components.
Frequently Asked Questions
What is alloy 6082 and what is it used for?
6082 (EN AW-6082 · AlSi1MgMn) is Europe's standard structural alloy and the highest-strength alloy in the 6xxx series. It is equivalent to American 6061 but with better mechanical strength and similar corrosion resistance. It is used in structural automotive applications (crash management bars, bumper beams, subframe components), construction (structural beams, bridges, offshore platforms), transportation (railway cars, bus bodies) and marine applications.
What are the main alloying elements in 6082 and what do they do?
6082 combines silicon (0.70–1.30%) and magnesium (0.60–1.20%), which form the Mg2Si precipitate responsible for the heat-treatment hardening characteristic of the 6xxx series. Its distinguishing feature is a high manganese content (0.40–1.00%), much higher than 6061's (≤0.15%), which provides superior grain control and is the key to its higher strength. Copper is kept low (≤0.10%).
Is 6082 heat-treatable, and what strength does it reach in the T6 temper?
Yes. As a 6xxx (Al-Mg-Si) alloy, 6082 is heat-treatable by solution treatment and aging. In its T6 temper it reaches a tensile strength (UTS) of 310–340 MPa, a yield strength of 260–310 MPa, 8–12% elongation and a hardness of ~100 HB. These are the highest values in the entire 6xxx series.
How does 6082 perform regarding corrosion and anodizing?
6082 offers excellent corrosion resistance, similar to 6061, making it suitable for marine applications and exposed structures. Its low copper content (≤0.10%) improves anodizing response versus 6061. It is a 6xxx-series alloy with the good formability, weldability and machinability typical of Al-Mg-Si alloys.
What is the difference between 6082 and 6061?
Both are heat-treatable Al-Mg-Si structural alloys, but 6082 is the European standard (EN 755/EN 12020) and offers superior mechanical properties with similar corrosion resistance. The key difference is manganese: 6082 contains 0.40–1.00% versus 6061's ≤0.15%, giving it greater grain control and strength. Its lower copper content also improves anodizing.
Why is demand for 6082 growing in Mexico?
6082 is growing rapidly in Mexico due to demand from European OEMs (VW, Audi, BMW) that specify this alloy for structural automotive components such as crash management bars, bumper beams and subframe reinforcements. Its EN 1090 certification also supports it for structural construction applications.
Is 6082 a casting or a wrought alloy, and what designations does it carry?
6082 is a wrought alloy (6xxx series) intended for extrusion and structural profiles, not a casting alloy. Its equivalent designations are: AA 6082 (USA), EN AW-6082 · AlSi1MgMn (Europe), AlMgSi1 / 3.2315 (DIN), AlSi1MgMn (ISO) and H30 (BS, UK). It is the European EN 755/EN 12020 standard for structural profiles.
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