Material · Aluminum Alloys
Aluminum 5083-H111
The shipbuilding aluminum: highest-strength weldable 5xxx for marine and cryogenic structure.
Price index: $$
Material properties
| Parameter | Value |
|---|---|
| Tensile strength | 290–320 MPa |
| Yield strength | ~145 MPa (H111) |
| Hardness | ~75 HB |
| Density | 2.66 g/cm³ |
Choose it when
The step up from 5052 when marine structure needs more strength: best seawater corrosion resistance of the common alloys, fully weldable, and it keeps toughness at cryogenic temperatures.
Look elsewhere when
Not for sustained service above ~65 °C (risk of sensitization and stress corrosion) and not a substitute for 6061-T6 where machinability and crisp detail matter more than salt exposure.
Compatible finishes
As-Machined
The baseline finish: straight off the machine, fastest and cheapest.
Anodizing Type II (Clear)
The standard aluminum finish: hard, clear oxide that keeps the metallic look.
Anodizing Type II (Dyed)
Color that cannot peel: dye locked inside the part’s own oxide layer.
Hardcoat Anodizing Type III
Wear armor for aluminum: an oxide layer as hard as tool steel.
Chromate Conversion (Alodine / Chem Film)
Corrosion protection that stays conductive — the EMI-grounding finish for aluminum.
Bead Blasting
The uniform matte look: erases tool marks, hides fingerprints, preps perfect anodizing.
Brushed Finish
The appliance-grade look: directional satin grain on panels, bezels and show faces.
Powder Coating
Baked-on polymer armor: any RAL color, outdoor-proof, the toughest cosmetic coating.
Wet Painting
Any color, any gloss, any substrate: the flexible coat for plastics and appearance prototypes.
Vibratory Tumbling
Batch deburring by the bowl-full: every edge broken, every burr gone, at volume prices.
Laser Marking
Permanent identification with zero dimensional change: serials, logos and codes burned in, not stuck on.
Typical applications
- Ship and workboat structural components
- ROV and subsea equipment frames
- Cryogenic and LNG vessel parts
- Offshore platform hardware
Industries
Compared with similar grades
| Property | Aluminum 5083-H111 | Aluminum 6061-T6 | Aluminum 6063-T5 | Aluminum 7075-T6 |
|---|---|---|---|---|
| Tensile strength | 290–320 MPa | 310 MPa | 186 MPa | 572 MPa |
| Yield strength | ~145 MPa (H111) | 276 MPa | 145 MPa | 503 MPa |
| Hardness | ~75 HB | 95 HB | 60 HB | 150 HB |
| Density | 2.66 g/cm³ | 2.70 g/cm³ | 2.69 g/cm³ | 2.81 g/cm³ |
| Price index | $$ | $ | $ | $$ |
| Machinability | 3/5 | 5/5 | 4/5 | 3/5 |
Have a part in mind?
Upload your CAD file and get a price range in about 60 seconds. NDA-protected from the first byte.
Get instant estimate