Materials / Compare
DMLS 316L Stainless Steel vs. FDM ASA
Compare DMLS 316L Stainless Steel vs. FDM ASA 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 | 530MPasourcetypical, as manufactured, horizontal | not given (tensile used) |
| Ultimate tensile strength | 640MPasourcetypical, as manufactured, horizontal | 37MPasourcetypical |
| Flexural strength | not sourced | 65MPasourcetypical |
| Elongation at break | 40%sourcetypical at break, as manufactured, horizontal | 9.2%sourcetypical |
| Young's modulus (stiffness) | 185GPasourcetypical, as built, horizontal (XY); EOSINT M280-400W / M290-400W, 316L_Surface 1.0, 20 µm (2014 sheet) | 2.45GPasourcetypical |
| Density | 7,900kg/m³sourcepart density (ISO 3369, not labelled min or typical), EOS M 290, 40 µm FlexLine | 1,050kg/m³sourcetypical |
| Strength to weight | 67.1kN·m/kg1.9x higher | 35.2kN·m/kg |
| Stiffness to weight | 23.4MN·m/kg10x higher | 2.33MN·m/kg |
| Poisson's ratio | 0.3sourcebase material: austenitic stainless steels incl. 1.4404 (316L), design value | not sourced |
| Shear modulus | 71.2GPa | not sourced |
| Bulk modulus | 154GPa | not sourced |
| Speed of sound | 4,839m/s | 1,528m/s |
| Thermal | ||
| Thermal conductivity | 16.2W/m·Ksourcebase material: wrought 316/316L (Cleveland-Cliffs), at 100 °C | 0.17W/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, typical |
| Thermal expansion | 15.7µm/m·Ksourcemean 25-100 °C, ASTM E228 | 80–110µm/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, range |
| 100 mm part over a 50 °C swing | 78.6µm growth6.04x less | 475µm growth |
| Specific heat | 500J/kg·Ksourcebase material: wrought 316/316L (Cleveland-Cliffs), 0-100 °C | not sourced |
| Heats up and cools (diffusivity) | 4.1mm²/s | not sourced |
| Thermal shock resistance | 2,067W/m | not sourced |
| Max service temperature | not sourced | 92°CsourceHDT 1.8 MPa |
| Values for | EOS StainlessSteel 316L (powder 9011-0032), EOS M 290, ParameterSet 316L 20µm Surface M290/400W, as manufactured, horizontal; ISO 6892-1 | Bambu Lab ASA, TDS V3.0, printed specimens X-Y; nozzle 260 °C, bed 80 °C, 200 mm/s, 100% infill; annealed and dried 80 °C for 12 h before testing. |
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 and FDM ASA are 3D printed: their properties depend on build direction and print settings; these are typical values.
Questions
Is DMLS 316L Stainless Steel stronger than FDM ASA?
DMLS 316L Stainless Steel is stronger: its yield strength is 530 MPa against tensile strength 37 MPa for FDM ASA (14.3x).
Which is lighter, DMLS 316L Stainless Steel or FDM ASA?
FDM ASA is lighter: 1,050 kg/m³ against 7,900 kg/m³ for DMLS 316L Stainless Steel.
Which is stiffer, DMLS 316L Stainless Steel or FDM ASA?
DMLS 316L Stainless Steel is stiffer: Young's modulus 185 GPa against 2.45 GPa for FDM ASA, so the same part in DMLS 316L Stainless Steel deflects less under the same load.
Which is lighter for the same job, DMLS 316L Stainless Steel or FDM ASA?
For the same stiffness or strength: DMLS 316L Stainless Steel is lighter for a stiff rod or tie (tension), stiff beam (bending), strong rod or tie; FDM ASA is lighter for a stiff panel or plate, strong beam, strong panel or plate.
| Part that must be | DMLS 316L Stainless Steel | FDM ASA |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 10x heavier |
| Stiff beam (bending) | lighter | 15% heavier |
| Stiff panel or plate | 1.78x heavier | lighter |
| Strong rod or tie | lighter | 1.9x heavier |
| Strong beam | 28% heavier | lighter |
| Strong panel or plate | 1.99x 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, DMLS 316L Stainless Steel or FDM ASA?
DMLS 316L Stainless Steel conducts heat better: 16.2 W/m·K against 0.17 W/m·K for FDM ASA.
Which expands less with temperature?
DMLS 316L Stainless Steel expands less: 15.7 µm/m·K against 95 µm/m·K for FDM ASA.