Materials / Compare
FDM PAHT-CF vs. DMLS 316L Stainless Steel
Compare FDM PAHT-CF vs. DMLS 316L Stainless Steel 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 | not given (tensile used) | 530MPasourcetypical, as manufactured, horizontal |
| Ultimate tensile strength | 92MPasourcetypical | 640MPasourcetypical, as manufactured, horizontal |
| Flexural strength | 125MPasourcetypical | not sourced |
| Elongation at break | 8.4%sourcetypical | 40%sourcetypical at break, as manufactured, horizontal |
| Young's modulus (stiffness) | 3.86GPasourcetypical | 185GPasourcetypical, as built, horizontal (XY); EOSINT M280-400W / M290-400W, 316L_Surface 1.0, 20 µm (2014 sheet) |
| Density | 1,060kg/m³sourcetypical | 7,900kg/m³sourcepart density (ISO 3369, not labelled min or typical), EOS M 290, 40 µm FlexLine |
| Strength to weight | 86.8kN·m/kg29% higher | 67.1kN·m/kg |
| Stiffness to weight | 3.64MN·m/kg | 23.4MN·m/kg6.43x higher |
| 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 | 1,908m/s | 4,839m/s |
| Thermal | ||
| Thermal conductivity | not sourced | 16.2W/m·Ksourcebase material: wrought 316/316L (Cleveland-Cliffs), at 100 °C |
| Thermal expansion | not sourced | 15.7µm/m·Ksourcemean 25-100 °C, ASTM E228 |
| 100 mm part over a 50 °C swing | not sourced | 78.6µm growth |
| Specific heat | not sourced | 500J/kg·Ksourcebase material: wrought 316/316L (Cleveland-Cliffs), 0-100 °C |
| Heats up and cools (diffusivity) | not sourced | 4.1mm²/s |
| Thermal shock resistance | not sourced | 2,067W/m |
| Melting point | 225°Csourcetypical | not sourced |
| Glass transition | 70°Csourcetypical | not sourced |
| Max service temperature | 170°CsourceHDT 1.8 MPa | not sourced |
| Values for | 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. | 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.
FDM PAHT-CF and DMLS 316L Stainless Steel are 3D printed: their properties depend on build direction and print settings; these are typical values.
Questions
Is FDM PAHT-CF stronger than DMLS 316L Stainless Steel?
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, FDM PAHT-CF or DMLS 316L Stainless Steel?
FDM PAHT-CF is lighter: 1,060 kg/m³ against 7,900 kg/m³ for DMLS 316L Stainless Steel.
Which is stiffer, FDM PAHT-CF or DMLS 316L Stainless Steel?
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, FDM PAHT-CF or DMLS 316L Stainless Steel?
For the same stiffness or strength: FDM PAHT-CF is lighter for a stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate; DMLS 316L Stainless Steel is lighter for a stiff rod or tie (tension).
| Part that must be | FDM PAHT-CF | DMLS 316L Stainless Steel |
|---|---|---|
| Stiff rod or tie (tension) | 6.43x heavier | lighter |
| Stiff beam (bending) | lighter | 8% heavier |
| Stiff panel or plate | lighter | 2.05x heavier |
| Strong rod or tie | lighter | 29% heavier |
| Strong beam | lighter | 2.32x heavier |
| Strong panel or plate | lighter | 3.11x 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).