Materials / Compare
Aluminum 1100-O vs. DMLS 316L Stainless Steel
Compare Aluminum 1100-O vs. DMLS 316L Stainless Steel strength, stiffness, weight and thermal properties.
| Try it on a partA sample part to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | 35MPasourcetypical, O, 0.0625 in specimen | 530MPasourcetypical, as manufactured, horizontal |
| Ultimate tensile strength | 90MPasourcetypical, O | 640MPasourcetypical, as manufactured, horizontal |
| Elongation at break | 35%sourcetypical, O, in 4D | 40%sourcetypical at break, as manufactured, horizontal |
| Young's modulus (stiffness) | 69GPasourcetypical | 185GPasourcetypical, as built, horizontal (XY); EOSINT M280-400W / M290-400W, 316L_Surface 1.0, 20 µm (2014 sheet) |
| Density | 2,710kg/m³sourcenominal, 20 °C | 7,900kg/m³sourcepart density (ISO 3369, not labelled min or typical), EOS M 290, 40 µm FlexLine |
| Strength to weight | 12.9kN·m/kg | 67.1kN·m/kg5.19x higher |
| Stiffness to weight | 25.5MN·m/kg9% higher | 23.4MN·m/kg |
| Poisson's ratio | not sourced | 0.3sourcebase material: austenitic stainless steels incl. 1.4404 (316L), design value |
| Shear modulus | not sourced | 71.2GPa |
| Bulk modulus | not sourced | 154GPa |
| Speed of sound | 5,046m/s | 4,839m/s |
| Thermal | ||
| Thermal conductivity | 222W/m·Ksourcetypical, O, 20 °C | 16.2W/m·Ksourcebase material: wrought 316/316L (Cleveland-Cliffs), at 100 °C |
| Thermal expansion | 23.6µm/m·Ksourcetypical, mean 20-100 °C | 15.7µm/m·Ksourcemean 25-100 °C, ASTM E228 |
| 100 mm part over a 50 °C swing | 118µm growth | 78.6µm growth1.5x less |
| Specific heat | 901J/kg·Ksourcebase material: commercially pure aluminium EN AW-1050A (Hydro), 20 °C | 500J/kg·Ksourcebase material: wrought 316/316L (Cleveland-Cliffs), 0-100 °C |
| Heats up and cools (diffusivity) | 90.9mm²/s22.2x faster | 4.1mm²/s |
| Thermal shock resistance | not sourced | 2,067W/m |
| Melting point | 640–655°Csourcemelting range | not sourced |
| Values for | 1100-O (annealed) commercially pure aluminium, Kaiser Aluminum Tube & Pipe Alloy 1100 Technical Data (Rev. 05/06), typical properties; specific heat from Hydro EN AW-1050A (99.5% Al) extruded-products datasheet (10/2018). | EOS StainlessSteel 316L (powder 9011-0032), EOS M 290, ParameterSet 316L 20µm Surface M290/400W, as manufactured, horizontal; ISO 6892-1 |
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.
DMLS 316L Stainless Steel is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is Aluminum 1100-O stronger than DMLS 316L Stainless Steel?
DMLS 316L Stainless Steel is stronger: its yield strength is 530 MPa against 35 MPa for Aluminum 1100-O (15.1x).
Which is lighter, Aluminum 1100-O or DMLS 316L Stainless Steel?
Aluminum 1100-O is lighter: 2,710 kg/m³ against 7,900 kg/m³ for DMLS 316L Stainless Steel.
Which is stiffer, Aluminum 1100-O or DMLS 316L Stainless Steel?
DMLS 316L Stainless Steel is stiffer: Young's modulus 185 GPa against 69 GPa for Aluminum 1100-O, so the same part in DMLS 316L Stainless Steel deflects less under the same load.
Which is lighter for the same job, Aluminum 1100-O or DMLS 316L Stainless Steel?
For the same stiffness or strength: Aluminum 1100-O is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate; DMLS 316L Stainless Steel is lighter for a strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Aluminum 1100-O | DMLS 316L Stainless Steel |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 9% heavier |
| Stiff beam (bending) | lighter | 1.78x heavier |
| Stiff panel or plate | lighter | 2.1x heavier |
| Strong rod or tie | 5.19x heavier | lighter |
| Strong beam | 2.1x heavier | lighter |
| Strong panel or plate | 33% 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 1100-O or DMLS 316L Stainless Steel?
Aluminum 1100-O conducts heat better: 222 W/m·K against 16.2 W/m·K for DMLS 316L Stainless Steel.
Which expands less with temperature?
DMLS 316L Stainless Steel expands less: 15.7 µm/m·K against 23.6 µm/m·K for Aluminum 1100-O.