5052-H32 vs 6061-T6
5052-H32 and 6061-T6 are the two default aluminum alloys for sheet and structural work, but they solve different problems: one is a formable, corrosion-tough sheet alloy; the other is a heat-treatable structural workhorse you machine and bolt.
The verdict
Choose 5052-H32 when you need to bend, form, or stamp sheet metal — enclosures, brackets, marine and chemical parts — and want the best corrosion resistance, especially in saltwater. Choose 6061-T6 when you need a stronger, stiffer structural part you'll machine, extrude, or load — frames, fixtures, shafts, plates. In short: 5052 for forming and corrosion, 6061 for strength and machining.
Side-by-side data
| Property | 5052-H32 | 6061-T6 |
|---|---|---|
| Category | Aluminum | Aluminum |
| Density (g/cm³) | 2.68 | 2.7 |
| Tensile strength (MPa) | 228 | 310 |
| Yield strength (MPa) | 193 | 276 |
| Elongation (%) | 12 | 12 |
| Hardness | 60 HB | 95 HB |
| Max service temp (°C) | 150 | 170 |
| Machinability | ●●●●● | ●●●●● |
| Corrosion resistance | ●●●●● | ●●●●● |
| Relative cost | ●●●●● | ●●●●● |
| Thermal cond. (W/m·K) | 138 | 167 |
| Typically used for | Marine & formed/bent sheet parts | All-round structural & machined parts — the default aluminum |
Which should you choose?
Choose 5052-H32 if…
- Your part is bent, rolled, stamped, or deep-drawn — 5052 forms tightly without cracking where 6061-T6 splits
- It sees saltwater, marine, or chemical exposure — 5052 is the go-to marine-grade sheet alloy
- You're working primarily in sheet/plate gauges rather than extrusions or thick machined blocks
- You'll weld it and want to keep good strength and corrosion resistance in the weld zone
- Cosmetic flatness and good as-formed surface matter more than maximum strength
Choose 6061-T6 if…
- You need higher strength and stiffness for a load-bearing or structural part
- The part is machined from plate, bar, or extruded profiles — 6061 cuts cleaner and chips better
- You want hard anodizing or a precision threaded/tapped feature that holds up
- You need extrusions (T-slot, tube, custom profiles) — 5052 isn't an extrusion alloy
- Dimensional stability under sustained load and good fatigue strength are priorities
Key differences that matter
- 6061-T6 is substantially stronger and stiffer in practice; 5052-H32 trades strength for formability and is the better choice anywhere it must bend without cracking.
- 5052 has the edge in corrosion resistance, particularly in marine/saltwater and many chemical environments — it's the standard marine sheet alloy; 6061 is good but a step behind.
- 6061 machines far better (cleaner chips, better finish, easier tapping); 5052 is gummier and tends to load tooling, so it's used as sheet, not machined stock.
- Both weld well, but welding removes 6061's T6 temper — the heat-affected zone drops toward annealed strength and needs re-heat-treatment to recover, whereas 5052 keeps strength better across a weld.
- 6061 anodizes (including hard-coat) with a cleaner, more uniform result; 5052 anodizes acceptably but is less ideal for decorative hardcoat. Cost is broadly similar, with 6061 often slightly cheaper and more widely stocked as bar/extrusion.
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Open the Material SelectorGet a Quote →Frequently asked questions
Is 5052-H32 stronger than 6061-T6?
No. 6061-T6 has notably higher yield and tensile strength and is stiffer under load. 5052-H32 is the weaker of the two but wins on formability and corrosion resistance, which is why it's chosen for bent sheet parts rather than structural members.
Which is cheaper, 5052 or 6061?
They're close. As sheet, pricing is comparable; 6061 is often slightly cheaper per pound and is more widely stocked in bar, plate, and extruded shapes. For pure sheet forming work 5052 is usually the more economical functional choice because it avoids cracking scrap.
Can I bend 5052 and 6061 the same way?
No. 5052-H32 bends to much tighter radii without cracking. 6061-T6 is prone to cracking on sharp bends and generally needs a larger bend radius, or forming in the softer T4/annealed temper followed by aging. For tight or repeated bends, pick 5052.
Which anodizes and machines better?
6061-T6 for both. It machines cleanly with good chip control and tapped threads, and it hard-anodizes uniformly. 5052 is gummier to machine and is usually left as formed sheet; it anodizes acceptably but isn't the first pick for decorative or hard-coat finishes.
Can both be welded, and does it weaken them?
Yes, both weld well (typically with 5356 filler). Welding 6061-T6 destroys the T6 temper locally — the heat-affected zone drops toward annealed strength unless you re-heat-treat and age. 5052 isn't heat-treatable, so it retains more of its strength and corrosion resistance across the weld.
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.