Materials / Compare
FDM ASA vs. Plastic ABS
Compare FDM ASA vs. Plastic ABS 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) | 38.1MPasourcetypical |
| Ultimate tensile strength | 37MPasourcetypical | 38.1MPasourcetypical, peak stress (= stress at yield) |
| Flexural strength | 65MPasourcetypical | 61.1MPasourcetypical |
| Elongation at break | 9.2%sourcetypical2x more ductile | 4.6%sourcetypical |
| Young's modulus (stiffness) | 2.45GPasourcetypical25% stiffer | 1.96GPasourcetypical |
| Density | 1,050kg/m³sourcetypical | 1,100kg/m³sourcetypical |
| Strength to weight | 35.2kN·m/kg2% higher | 34.6kN·m/kg |
| Stiffness to weight | 2.33MN·m/kg31% higher | 1.78MN·m/kg |
| Poisson's ratio | not sourced | 0.39sourcebase material: ABS family typical (Covestro Part and Mold Design guide, Table 3-1) |
| Shear modulus | not sourced | 0.706GPa |
| Bulk modulus | not sourced | 2.97GPa |
| Speed of sound | 1,528m/s | 1,336m/s |
| Thermal | ||
| Thermal conductivity | 0.17W/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, typical | 0.17W/m·Ksourcebase material: INEOS Styrolution Terluran GP-22 injection-molding ABS, typical |
| Thermal expansion | 80–110µm/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, range | 80–110µm/m·Ksourcebase material: INEOS Styrolution Terluran GP-22 injection-molding ABS, range |
| 100 mm part over a 50 °C swing | 475µm growth | 475µm growth |
| Specific heat | not sourced | not sourced |
| Heats up and cools (diffusivity) | not sourced | not sourced |
| Thermal shock resistance | not sourced | 21.2W/m |
| Glass transition | not sourced | 101°Csourcetypical |
| Max service temperature | 92°CsourceHDT 1.8 MPa | 86.6°CsourceHDT 0.455 MPa (printed specimens) |
| Values for | 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. | Ultimaker ABS, 3D-printed specimens, XY (flat); 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 v5.00, 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.
FDM ASA and Plastic ABS are 3D printed: their properties depend on build direction and print settings; these are typical values.
Questions
Is FDM ASA stronger than Plastic ABS?
Plastic ABS is stronger: its yield strength is 38.1 MPa against tensile strength 37 MPa for FDM ASA (3%).
Which is lighter, FDM ASA or Plastic ABS?
FDM ASA is lighter: 1,050 kg/m³ against 1,100 kg/m³ for Plastic ABS.
Which is stiffer, FDM ASA or Plastic ABS?
FDM ASA is stiffer: Young's modulus 2.45 GPa against 1.96 GPa for Plastic ABS, so the same part in FDM ASA deflects less under the same load.
Which is lighter for the same job, FDM ASA or Plastic ABS?
For the same stiffness or strength: FDM ASA is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
| Part that must be | FDM ASA | Plastic ABS |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 31% heavier |
| Stiff beam (bending) | lighter | 17% heavier |
| Stiff panel or plate | lighter | 13% heavier |
| Strong rod or tie | lighter | 2% heavier |
| Strong beam | lighter | 3% heavier |
| Strong panel or plate | lighter | 3% 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).
Which is more ductile, FDM ASA or Plastic ABS?
FDM ASA stretches further before it breaks: 9.2% elongation at break against 4.6% for Plastic ABS.
Which conducts heat better, FDM ASA or Plastic ABS?
FDM ASA conducts heat better: 0.17 W/m·K against 0.17 W/m·K for Plastic ABS.
Which expands less with temperature?
FDM ASA expands less: 95 µm/m·K against 95 µm/m·K for Plastic ABS.