Guides / Alloys
Your Drawing Says 6061 and the Shop Has 6082 on the Rack
September 21, 2026 by The Alu CNC Parts editorial desk / how this is checked
A US drawing says 6061-T6. A shop in Germany, Italy or Poland quotes it and offers 6082-T6 instead. That is not a shop trying to cut corners. It is a shop telling you what is on the shelf in that market.
They are close relatives
Both are 6000 series alloys, aluminum with magnesium and silicon, heat treatable to a T6 temper. They occupy the same slot in the world: general purpose structural aluminum that machines well, welds, anodizes cleanly and resists corrosion.
| 6061-T6 | 6082-T6 | |
|---|---|---|
| Yield strength | ~276 MPa | ~260 MPa |
| Tensile strength | ~310 MPa | ~310 MPa |
| Main market | North America | Europe, UK |
| Machinability | Very good | Good, slightly tougher |
| Weldability | Good | Good |
| Anodizing | Excellent and repeatable | Good |
| Corrosion resistance | Good | Good, marginally better |
The differences are small. 6082 has more manganese, which refines the grain and makes it slightly tougher to cut. Published yield figures vary by source and by section thickness, and in thick sections 6082 can come out ahead.
When to accept the substitution
For the large majority of machined parts, take it. Brackets, housings, plates, mounts and adapters made from either alloy will behave the same in service, and buying the alloy the shop already stocks saves you a mill order and a wait.
Write the drawing so this is allowed rather than leaving the shop to ask:
6061-T6 OR 6082-T6
That one line saves a round of emails on every European quote you send.
When not to accept it
A customer or standard names the alloy. If a specification, a qualification or a contract says 6061, the substitution is a change that needs approval, whatever the metallurgy says.
Cosmetic parts in a matched set. The two alloys will not anodize to exactly the same shade. If an assembly has visible parts that must match, keep the whole set on one alloy from one batch.
Parts qualified by test. Anything where fatigue or fracture behaviour was validated on 6061 coupons should stay on 6061 until it is retested.
What this tells you about sourcing generally
The alloy on your drawing is a request for a chemistry, but stock availability is regional. The same pattern shows up elsewhere. Ask for 5083 in Europe and it is everywhere. Ask for MIC-6 cast plate outside North America and you will get an equivalent under a different trade name, or a wait.
The practical habit is to write the specification you need and then say what flexibility you have. “6061-T6, equivalent 6000 series acceptable” tells a shop anywhere in the world exactly how much room it has, and you stop paying for material that had to travel further than the part did.
Sources
Figures in this guide are checked against the following. Published values are typical ranges for test material, not a guarantee for your part.
Frequently asked questions
Are 6061 and 6082 interchangeable?
For most machined parts, close enough. 6082-T6 is slightly stronger and slightly harder to machine, and both anodize well. Where it matters is on a part qualified to a specific standard, or where a customer specification names the alloy. Then a substitution is a paperwork problem, not a metallurgy problem.
Which one is more available in Europe?
6082 by a wide margin. It is the general purpose structural alloy across the EU and UK, and it is the one a European stockist keeps in a full range of plate and bar sizes. Asking for 6061 in Europe often means a special order and a delay.
Does 6082 anodize the same colour as 6061?
Close but not identical. Both take a clear or coloured Type II anodize well. Because the chemistry differs slightly, parts from the two alloys will not colour match exactly in the same batch, so do not mix them in an assembly where the finish is visible.
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