Non-heat-treatable Al-Mg — marine, hulls, tanks. Best-in-class corrosion + weldability.
| Property | Typical value |
|---|---|
| Density | 2660 kg/m³ |
| Yield | ~145 MPa (O) |
| Tensile | 270–350 MPa |
| Elongation | ~16 % |
| Young's E | 70 GPa |
| Hardness | ~75 HB |
| CTE | ~24 µm/m·K |
| Thermal cond. | ~117 W/m·K |
| Max service | ~65 °C marine/wet (SCC risk above); ~150 °C dry |
| Poisson ν | ~0.33 |
| Shear modulus G | ~26 GPa (derived) |
| Shear strength | ~175 MPa (O temper typ) |
| Specific heat | ~900 J/kg·K |
| Elec. resistivity | ~0.059 µΩ·m (~29 %IACS) |
| Melting range | ~570–640 °C |
~50%. Gummy; sharp tools, good coolant.
Retains most strength after welding (non-HT); marine standard, 5183/5356 filler.
| System | Designation |
|---|---|
| EN | EN AW-5083 [Al Mg4.5Mn0.7] |
| DIN | AlMg4,5Mn / 3.3547 |
| AISI | AA 5083 |
| ASTM | B209 / B221 5083 |
| JIS | A5083 |
| BS | BS 1470 N8 |
| UNS | A95083 |
Equivalents & alternatives: 5083 (UNS A95083). Alt: 5754 (formable), 6082 (higher strength, HT).
The UK structural aluminium — frames, machined parts, marine. Best strength of the 6xxx weldables.
Aluminium (wrought)General-purpose heat-treatable aluminium (US-origin) — very similar to 6082, widely stocked.
Aluminium (wrought)Highest-strength common aluminium (Al-Zn) — aerospace, tooling, jigs. Not for welding/marine.
Aluminium (wrought)Free-machining aluminium (Pb/Bi) — high-volume turned parts, connectors, fittings.
