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Overview
This sheet summarises three aluminium grades available through Shapeways CNC machining services. Data is compiled by Shapeways on the basis of EN 485-2 and EN 573-3 standard values for the specified alloy and temper. For full grade data, refer to the individual Material Properties Sheets.
Grade Comparison
| Property | 5083 | 6082 | 7075 |
|---|---|---|---|
| EN Designation | EN AW-5083 | EN AW-6082 | EN AW-7075 |
| Chemical Composition | AIMg4,5Mn | AIMgSi1 | AIZnMgCu1,5 |
| Werkstoffnummer | 3.3547 | 3.2315 | 3.4365 |
| Tensile Strength(Rm) | 270-350MPa | 310MPa min | 503MPa min |
| Yield Strength(Rp0.2) | 125MPa min | 260MPa min | 435MPa min |
| Elongation(A50) | 12%min | 8%min | 7%min |
| Hardness(Brinell) | ~75HB | ~95HB | ~150HB |
| Density | 2.66g/cm³ | 2.71g/cm³ | 2.81g/cm³ |
| Elastic Modulus | ~70GPa | ~70GPa | ~72GPa |
| Thermal Conductivity | ~117W/m·K | ~170W/m·K | ~130W/m·K |
| Coeff.Thermal Expansion | 23.7×10^{-6}/K | 23.4×10^{-6}/K | 23.6×10^{-6}/K |
| Corrosion Resistance | Excellent | Good | Low—anodise recommended |
| Machinability | Good | Very good | Very good |
| Weldability | Excellent | Good | Not recommended |
| Primary Use | Marine, offshore, cryogenics | Structural, transport, aerospace | Aerospace, defence, high-performance |
$$ 23.7\times10^{-6}/k $$
$$ 23.4\times10^{-6}/k $$
$$ 23.6\times10^{-6}/k $$
CTE values measured over 20–100 °C range. Corrosion resistance ratings are relative within this grade set. All mechanical values are EN 485-2 minimums for the relevant alloy.
$$ 20{-}100\ ^{\circ}\mathrm{C} $$
Grade Selection Guide
| Application | Recommended Grade | Rationale |
|---|---|---|
| Marine/offshore/seawater | 5083 | Best corrosion resistance; weldable |
| General structural/mechanical | 6082 | Best all-round balance; most versatile |
| Aerospace/high-load/defence | 7075 | Highest strength; anodise for corrosion protection |
| Cryogenic service | 5083 | Retains toughness at -196℃ |
$$ -196\ {}^{\circ}\mathrm{C} $$
CNC Aluminium SW-MPS-AL-CNC-000
Rev 1.0 | 13 March 2026 Material Properties Sheet — Grade Overview
Welded assemblies 5083 or 6082 7075 not suitable for fusion welding
Hard anodising required 6082 or 7075 Both anodise well; 7075 may show colour variation
Values indicative, based on EN 485-2 and EN 573-3. Lot-specific data per EN 10204 3.1 material certificate. Page 2