Materials / Compare
DMLS 316L Stainless Steel vs. FDM PAHT-CF
Compare DMLS 316L Stainless Steel vs. FDM PAHT-CF 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 | 92MPasourcetypical |
| Flexural strength | not sourced | 125MPasourcetypical |
| Elongation at break | 40%sourcetypical at break, as manufactured, horizontal | 8.4%sourcetypical |
| Young's modulus (stiffness) | 185GPasourcetypical, as built, horizontal (XY); EOSINT M280-400W / M290-400W, 316L_Surface 1.0, 20 µm (2014 sheet) | 3.86GPasourcetypical |
| Density | 7,900kg/m³sourcepart density (ISO 3369, not labelled min or typical), EOS M 290, 40 µm FlexLine | 1,060kg/m³sourcetypical |
| Strength to weight | 67.1kN·m/kg | 86.8kN·m/kg29% higher |
| Stiffness to weight | 23.4MN·m/kg6.43x higher | 3.64MN·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 | 1,908m/s |
| Thermal | ||
| Thermal conductivity | 16.2W/m·Ksourcebase material: wrought 316/316L (Cleveland-Cliffs), at 100 °C | not sourced |
| Thermal expansion | 15.7µm/m·Ksourcemean 25-100 °C, ASTM E228 | not sourced |
| 100 mm part over a 50 °C swing | 78.6µm growth | not sourced |
| 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 |
| Melting point | not sourced | 225°Csourcetypical |
| Glass transition | not sourced | 70°Csourcetypical |
| Max service temperature | not sourced | 170°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 PAHT-CF, TDS V3.0, printed specimens X-Y, dry state; nozzle 290 °C, bed 100 °C, 100 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 PAHT-CF 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 PAHT-CF?
DMLS 316L Stainless Steel is stronger: its yield strength is 530 MPa against tensile strength 92 MPa for FDM PAHT-CF (5.76x).
Which is lighter, DMLS 316L Stainless Steel or FDM PAHT-CF?
FDM PAHT-CF is lighter: 1,060 kg/m³ against 7,900 kg/m³ for DMLS 316L Stainless Steel.
Which is stiffer, DMLS 316L Stainless Steel or FDM PAHT-CF?
DMLS 316L Stainless Steel is stiffer: Young's modulus 185 GPa against 3.86 GPa for FDM PAHT-CF, 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 PAHT-CF?
For the same stiffness or strength: DMLS 316L Stainless Steel is lighter for a stiff rod or tie (tension); FDM PAHT-CF is lighter for a stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
| Part that must be | DMLS 316L Stainless Steel | FDM PAHT-CF |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 6.43x heavier |
| Stiff beam (bending) | 8% heavier | lighter |
| Stiff panel or plate | 2.05x heavier | lighter |
| Strong rod or tie | 29% heavier | lighter |
| Strong beam | 2.32x heavier | lighter |
| Strong panel or plate | 3.11x 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).