Aluminium alloy density table
Nominal density for every grade we stock and quote, with magnesium content and marine availability. Every weight calculator on this site reads from this table.
| Alloy | Series | Typical Mg content | Density (kg/m³) | Density (g/cm³) | Density (lb/in³) | Marine availability |
|---|---|---|---|---|---|---|
| 5083 | 5xxx | 4.0–4.9% | 2,660 | 2.66 | 0.096 | Standard marine plate (workhorse) |
| 5086 | 5xxx | 3.5–4.5% | 2,660 | 2.66 | 0.096 | Standard marine plate |
| 5754 | 5xxx | 2.6–3.6% | 2,670 | 2.67 | 0.096 | Marine superstructure, deck |
| 5052 | 5xxx | 2.2–2.8% | 2,680 | 2.68 | 0.097 | Light sheet, marine outfit |
| 5059 | 5xxx | 5.0–5.5% | 2,700 | 2.70 | 0.098 | High-strength marine, on request |
| 5454 | 5xxx | 2.4–3.0% | 2,690 | 2.69 | 0.097 | Pressure vessels, hull |
| 5383 | 5xxx | 4.0–5.0% | 2,690 | 2.69 | 0.097 | Not in standard supply (reference only) |
| 1100 | 1xxx | — (99% Al) | 2,710 | 2.71 | 0.098 | Light sheet, outfit, foil |
| 3003 | 3xxx | — (1.2% Mn) | 2,730 | 2.73 | 0.099 | General sheet, non-marine |
| 6061 | 6xxx | 0.8–1.2% | 2,700 | 2.70 | 0.098 | Extruded structural (not primary hull) |
| 6063 | 6xxx | 0.45–0.9% | 2,700 | 2.70 | 0.098 | Architectural extrusion |
| 2011 | 2xxx | — (5% Cu) | 2,820 | 2.82 | 0.102 | Free-machining (not marine) |
| 2024 | 2xxx | — (4.4% Cu) | 2,780 | 2.78 | 0.100 | Aerospace (not marine) |
| 7075 | 7xxx | 2.1–2.9% | 2,810 | 2.81 | 0.101 | Aerospace structural (not marine) |
| If the spec says… | Use density… | Why |
|---|---|---|
| “5083 H116 / H321 plate” | 2,660 kg/m³ | Standard DNV-approved marine plate alloy. |
| “5086 H116 plate” | 2,660 kg/m³ | Marine plate, similar Mg content to 5083. |
| “5754 H111 / H32” | 2,670 kg/m³ | Superstructure / deck plate, easier forming. |
| “5052 H32 / H34 sheet” | 2,680 kg/m³ | Light sheet, outfit, non-primary. |
| “5059 H116 plate” | 2,700 kg/m³ | High-strength, on-request marine plate. |
| “5454 H32 plate” | 2,690 kg/m³ | Pressure vessel / hull, similar to 5083. |
| “1100 O / H14 sheet” | 2,710 kg/m³ | Light sheet / foil / outfit. |
| “3003 H14 sheet” | 2,730 kg/m³ | General sheet, not marine-primary. |
| “6061 T6 extrusions” | 2,700 kg/m³ | Structural extrusions, brackets, masts. |
| “7075 T6 plate” | 2,810 kg/m³ | Aerospace structural, not marine-primary. |
People also ask
Why doesn’t this list 2024 or 7075 for marine use?
The 2xxx (Al-Cu) and 7xxx (Al-Zn) series are heat-treated alloys. They are stronger per weight than 5xxx but have substantially worse corrosion resistance in seawater — they require aluminum-clad (“Alclad”) protection, anodic isolation, or paint to survive marine service. Most classification societies restrict their use on primary hull plating.
Does the temper change the density?
No. Temper (H116, H321, T6, O) is a heat-treatment / work-hardening designation that affects strength, ductility, and residual stress — not the fundamental density of the alloy. A 5083-O plate weighs the same per cubic metre as a 5083-H116 plate.
What about 5383?
5383 is a real 5xxx alloy but not in our standard marine plate supply chain. It is registered with the European designation system and produced by some specialty mills. For most marine applications 5083 or 5059 covers the requirement; 5383 is on request only.
Where do these numbers come from?
EN 485-2 (chemical composition limits and density ranges) and ASTM B928 (marine aluminum plate spec). The values are nominal — actual lot-to-lot variation is typically within ±0.3%.
How do I use this with the weight calculators?
Pick the alloy from the calculator’s drop-down and the calculator pulls the corresponding density from this table. If you need a weight with a custom density, send the figure to info@aymetals.com and we will run the calculation against your MTC’s specific density reading.
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