6082-T6 vs 6061-T6
6082-T6 and 6061-T6 are close 6000-series structural cousins with nearly identical strength, 2.7 g/cm³ density and machinability. 6082 is the European structural standard with slightly higher silicon and manganese, while 6061 is the North American workhorse. Engineers usually weigh them on regional availability and a small strength and ductility trade-off rather than any dramatic property difference between the two.
The verdict
Choose 6082-T6 for structural frames and extrusions, especially in European supply chains — its higher manganese gives marginally higher yield strength (260 vs 276 MPa tensile parity) and good corrosion resistance. Choose 6061-T6 as the versatile North American default for machined and welded parts, with better elongation (12% vs 10%) and the widest stock availability; the two are largely interchangeable in performance.
Side-by-side data
| Property | 6082-T6 | 6061-T6 |
|---|---|---|
| Category | Aluminum | Aluminum |
| Density (g/cm³) | 2.7 | 2.7 |
| Tensile strength (MPa) | 310 | 310 |
| Yield strength (MPa) | 260 | 276 |
| Elongation (%) | 10 | 12 |
| Hardness | 95 HB | 95 HB |
| Max service temp (°C) | 150 | 170 |
| Machinability | ●●●●● | ●●●●● |
| Corrosion resistance | ●●●●● | ●●●●● |
| Relative cost | ●●●●● | ●●●●● |
| Thermal cond. (W/m·K) | 170 | 167 |
| Typically used for | Structural extrusions & frames | All-round structural & machined parts — the default aluminum |
Which should you choose?
Choose 6082-T6 when…
- The project follows European standards or sources from European supply chains
- Structural extrusions and frames are the main application
- You want slightly higher yield strength than 6061 (260 vs 276 MPa range)
- Good corrosion resistance in structural service is needed
- The part is primarily extruded or machined structural sections
- Manganese-bearing chemistry for grain control suits the application
Choose 6061-T6 when…
- You are in a North American supply chain where 6061 is the stocked default
- Maximum versatility across sheet, plate, bar and extrusion is needed
- Slightly higher ductility is useful (12% vs 10% elongation)
- The part mixes heavy machining with structural duty
- Welding is required and broad filler/process familiarity matters
- You want the most widely documented, easily-sourced general aluminum
Key differences that matter
- Both are 6000-series Al-Mg-Si structural alloys with the same 2.7 g/cm³ density
- Nearly identical strength: both ~310 MPa tensile; 6082 ~260 MPa yield vs 6061 ~276 MPa (close)
- 6082 has higher manganese for grain-structure control; 6061 has a balanced, versatile chemistry
- 6061 has slightly higher elongation (12% vs 10%) for marginally better ductility
- Both share similar good corrosion resistance and similar machinability
- Availability is the practical differentiator: 6082 in Europe, 6061 in North America
- 6082 conducts heat marginally better (170 vs 167 W/m·K) — a negligible difference
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Open the Material SelectorGet a Quote →Frequently asked questions
Is 6082 stronger than 6061?
They are very close. Both reach about 310 MPa tensile; in this data 6061 lists a slightly higher yield (276 vs 260 MPa) while their tensile is equal. The strength difference is small enough that for most structural designs the two are interchangeable, and selection usually comes down to availability rather than strength.
What is the real difference between 6082 and 6061?
Chemistry and region. 6082 carries higher manganese and silicon, which refines grain structure, and it is the European structural standard. 6061 has a balanced chemistry and is the North American default. Mechanically they are near-equivalents, so supply chain and local standards typically decide the choice.
Which is more machinable?
They are comparable — both are good machining 6000-series alloys with similar machinability ratings. 6061 is often perceived as the easier, more documented choice simply because it is so widely used, but 6082 machines well too. Neither has a meaningful machining advantage over the other in practice.
Can both be welded?
Yes, both weld well with standard aluminum practice, and both lose some strength in the heat-affected zone like other heat-treated 6000-series alloys. Filler selection and post-weld considerations are similar, so weldability is not a deciding factor between them.
Are 6082 and 6061 interchangeable?
For most structural purposes, effectively yes — same density, near-identical strength and similar corrosion resistance and machinability. The practical decision is regional availability: 6082 dominates European stock and standards, 6061 dominates North America. Match the alloy to your supply chain and the small property gap rarely matters.
Property values are typical/nominal figures for early-stage guidance only and vary by temper, grade, supplier and heat treatment. Confirm critical specifications against a certified datasheet or with an mfgiq engineer before production.