Materials / Compare
Aluminum 6061-T6 vs. Plastic Nylon
Compare Aluminum 6061-T6 vs. Plastic 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 | 276MPasourcetypical, 0.2% offset, .500 in dia specimen | 63.1MPasourcetypical |
| Ultimate tensile strength | 310MPasourcetypical | 63.1MPasourcetypical, peak stress (= stress at yield) |
| Flexural strength | not sourced | 82.9MPasourcetypical |
| Elongation at break | 17%sourcetypical, in 4D, 0.500 in dia specimen | not sourced |
| Young's modulus (stiffness) | 68.3GPasourcetypical29.3x stiffer | 2.33GPasourcetypical |
| Density | 2,700kg/m³sourcenominal | 1,140kg/m³sourcetypical |
| Strength to weight | 102kN·m/kg1.85x higher | 55.4kN·m/kg |
| Stiffness to weight | 25.3MN·m/kg12.4x higher | 2.04MN·m/kg |
| Poisson's ratio | 0.33sourcetypical (handbook physical constant) | 0.4sourcebase material: unfilled polyamide (PA), conditioned, maker design-guide family value (Covestro Table 3-1) |
| Shear modulus | 25.7GPa30.8x stiffer in shear | 0.833GPa |
| Bulk modulus | 67GPa | 3.89GPa |
| Speed of sound | 5,030m/s | 1,430m/s |
| Thermal | ||
| Thermal conductivity | 167W/m·Ksourcetypical, 20 °C | 0.33W/m·Ksourcebase material: unreinforced BASF Ultramid PA66 (A3K) and PA6 (B3S), 23 C (same value for both) |
| Thermal expansion | 23.6µm/m·Ksourcetypical, mean 20-100 °C | 98–102µm/m·Ksourcebase material: unreinforced BASF Ultramid PA66 (A3K, 98) and PA6 (B3S, 102), 23-55 C |
| 100 mm part over a 50 °C swing | 118µm growth4.24x less | 500µm growth |
| Specific heat | 896J/kg·Ksourcetypical, at 100 °C | 1,700J/kg·Ksourcebase material: unreinforced BASF Ultramid PA66 (A3K) and PA6 (B3S), 23 C (same value for both) |
| Heats up and cools (diffusivity) | 69mm²/s405x faster | 0.17mm²/s |
| Thermal shock resistance | 19,159W/m357x more resistant | 53.6W/m |
| Melting point | 582–652°Csourcesolidus-liquidus | 188°Csourcetypical |
| Glass transition | not sourced | 55.1°Csourcetypical |
| Max service temperature | not sourced | 89.2°CsourceHDT 0.455 MPa (printed specimens) |
| Values for | 6061-T6/T651, Kaiser Aluminum typical properties; Poisson from MIL-HDBK-5J | Ultimaker Nylon, 3D-printed specimens, XY (flat), conditioned >=24 h at room temperature; Ultimaker S5 Pro, engineering intent profile, 0.15 mm layer height, AA 0.4 print core, 100% infill, Cura 4.9, printed one-at-a-time, conditioned >=24 h at room temperature. TDS v2.00, April 20, 2022. |
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.
Plastic Nylon is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is Aluminum 6061-T6 stronger than Plastic Nylon?
Aluminum 6061-T6 is stronger: its yield strength is 276 MPa against 63.1 MPa for Plastic Nylon (4.37x).
Which is lighter, Aluminum 6061-T6 or Plastic Nylon?
Plastic Nylon is lighter: 1,140 kg/m³ against 2,700 kg/m³ for Aluminum 6061-T6.
Which is stiffer, Aluminum 6061-T6 or Plastic Nylon?
Aluminum 6061-T6 is stiffer: Young's modulus 68.3 GPa against 2.33 GPa for Plastic Nylon, so the same part in Aluminum 6061-T6 deflects less under the same load.
Which is lighter for the same job, Aluminum 6061-T6 or Plastic Nylon?
For the same stiffness or strength: Aluminum 6061-T6 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam; Plastic Nylon is lighter for a strong panel or plate.
| Part that must be | Aluminum 6061-T6 | Plastic Nylon |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 12.4x heavier |
| Stiff beam (bending) | lighter | 2.29x heavier |
| Stiff panel or plate | lighter | 30% heavier |
| Strong rod or tie | lighter | 1.85x heavier |
| Strong beam | lighter | 13% heavier |
| Strong panel or plate | 13% heavier | lighter |
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).
Which conducts heat better, Aluminum 6061-T6 or Plastic Nylon?
Aluminum 6061-T6 conducts heat better: 167 W/m·K against 0.33 W/m·K for Plastic Nylon.
Which expands less with temperature?
Aluminum 6061-T6 expands less: 23.6 µm/m·K against 100 µm/m·K for Plastic Nylon.