Materials / Compare
Aluminum 7075-T6 vs. SLS PA12 Nylon
Compare Aluminum 7075-T6 vs. SLS PA12 Nylon strength, stiffness, weight and thermal properties.
| Try it on a partA bracket to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | 503MPasourcetypical, 0.2% offset, .500 in dia specimen | not given (tensile used) |
| Ultimate tensile strength | 572MPasourcetypical11.9x stronger | 48MPasourcetypical |
| Elongation at break | 11%sourcetypical, in 4D | 18%sourcetypical |
| Young's modulus (stiffness) | 71GPasourcetypical43x stiffer | 1.65GPasourcetypical |
| Density | 2,800kg/m³sourcenominal | 930kg/m³sourcetypical |
| Strength to weight | 180kN·m/kg3.48x higher | 51.6kN·m/kg |
| Stiffness to weight | 25.4MN·m/kg14.3x higher | 1.77MN·m/kg |
| Poisson's ratio | 0.33sourcetypical (handbook physical constant) | not sourced |
| Shear modulus | 26.7GPa | not sourced |
| Bulk modulus | 69.6GPa | not sourced |
| Speed of sound | 5,036m/s | 1,332m/s |
| Thermal | ||
| Thermal conductivity | 130W/m·Ksourcetypical, 20 °C, T651 | not sourced |
| Thermal expansion | 23.4µm/m·Ksourcetypical, mean 20-100 °C | not sourced |
| 100 mm part over a 50 °C swing | 117µm growth | not sourced |
| Specific heat | 960J/kg·Ksourcetypical, at 100 °C | not sourced |
| Heats up and cools (diffusivity) | 48.4mm²/s | not sourced |
| Thermal shock resistance | 26,370W/m | not sourced |
| Melting point | 532–635°Csourcemelting range | 176°Csourcetypical |
| Max service temperature | not sourced | 64°CsourceHDT 1.8 MPa, X orientation |
| Values for | 7075-T6/T651, Kaiser Aluminum rod & bar (mechanical) and sheet/coil/plate (physical) typical datasheets; Poisson from MIL-HDBK-5J | EOS PA 2200 (PA12) Material Data Sheet, process parameter 'Balance' at 120 µm layer thickness, X orientation, dry (conditioned values not given). Live MDS status 04.10.2026, last changed 10.09.2026; PDF via ?topdf=... link on the same page. |
Every value links to the document that states it. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
SLS PA12 Nylon is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is Aluminum 7075-T6 stronger than SLS PA12 Nylon?
Aluminum 7075-T6 is stronger: its yield strength is 503 MPa against tensile strength 48 MPa for SLS PA12 Nylon (10.5x).
Which is lighter, Aluminum 7075-T6 or SLS PA12 Nylon?
SLS PA12 Nylon is lighter: 930 kg/m³ against 2,800 kg/m³ for Aluminum 7075-T6.
Which is stiffer, Aluminum 7075-T6 or SLS PA12 Nylon?
Aluminum 7075-T6 is stiffer: Young's modulus 71 GPa against 1.65 GPa for SLS PA12 Nylon, so the same part in Aluminum 7075-T6 deflects less under the same load.
Which is lighter for the same job, Aluminum 7075-T6 or SLS PA12 Nylon?
For the same stiffness or strength: Aluminum 7075-T6 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Aluminum 7075-T6 | SLS PA12 Nylon |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 14.3x heavier |
| Stiff beam (bending) | lighter | 2.18x heavier |
| Stiff panel or plate | lighter | 16% heavier |
| Strong rod or tie | lighter | 3.48x heavier |
| Strong beam | lighter | 1.59x heavier |
| Strong panel or plate | lighter | 8% heavier |
For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).