Materials / Compare
FDM ASA vs. Brass C260
Compare FDM ASA vs. Brass C260 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) | 345MPasourcenominal, strip/flat, 0.5% extension (not 0.2% offset) |
| Ultimate tensile strength | 37MPasourcetypical | 427MPasourcenominal, strip/flat |
| Flexural strength | 65MPasourcetypical | not sourced |
| Elongation at break | 9.2%sourcetypical | 23%sourcenominal, in 2.0 in., strip/flat |
| Young's modulus (stiffness) | 2.45GPasourcetypical | 110GPasourcetypical, temper-independent |
| Density | 1,050kg/m³sourcetypical | 8,525kg/m³sourcenominal |
| Strength to weight | 35.2kN·m/kg | 40.5kN·m/kg15% higher |
| Stiffness to weight | 2.33MN·m/kg | 12.9MN·m/kg5.55x higher |
| Poisson's ratio | not sourced | 0.34sourcereference value at room temperature (Wieland-M30 = CuZn30 = C26000, rolled products) |
| Shear modulus | not sourced | 41.2GPa |
| Bulk modulus | not sourced | 115GPa |
| Speed of sound | 1,528m/s | 3,597m/s |
| Thermal | ||
| Thermal conductivity | 0.17W/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, typical | 121W/m·Ksourcetypical, 20 °C |
| Thermal expansion | 80–110µm/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, range | 20µm/m·Ksourcetypical, mean 20-300 °C |
| 100 mm part over a 50 °C swing | 475µm growth | 100µm growth4.75x less |
| Specific heat | not sourced | 377J/kg·Ksourcetypical, 20 °C |
| Heats up and cools (diffusivity) | not sourced | 37.7mm²/s |
| Thermal shock resistance | not sourced | 12,510W/m |
| Melting point | not sourced | 916–954°Csourcesolidus-liquidus |
| Max service temperature | 92°CsourceHDT 1.8 MPa | not sourced |
| 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. | C26000 cartridge brass, H02 half hard flat/strip: CDA Electronic Connector Design Guide (mechanical) + CDA alloy page (physical) |
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 is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is FDM ASA stronger than Brass C260?
Brass C260 is stronger: its yield strength is 345 MPa against tensile strength 37 MPa for FDM ASA (9.32x).
Which is lighter, FDM ASA or Brass C260?
FDM ASA is lighter: 1,050 kg/m³ against 8,525 kg/m³ for Brass C260.
Which is stiffer, FDM ASA or Brass C260?
Brass C260 is stiffer: Young's modulus 110 GPa against 2.45 GPa for FDM ASA, so the same part in Brass C260 deflects less under the same load.
Which is lighter for the same job, FDM ASA or Brass C260?
For the same stiffness or strength: FDM ASA is lighter for a stiff beam (bending), stiff panel or plate, strong beam, strong panel or plate; Brass C260 is lighter for a stiff rod or tie (tension), strong rod or tie.
| Part that must be | FDM ASA | Brass C260 |
|---|---|---|
| Stiff rod or tie (tension) | 5.55x heavier | lighter |
| Stiff beam (bending) | lighter | 21% heavier |
| Stiff panel or plate | lighter | 2.28x heavier |
| Strong rod or tie | 15% heavier | lighter |
| Strong beam | lighter | 1.83x heavier |
| Strong panel or plate | lighter | 2.66x 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 conducts heat better, FDM ASA or Brass C260?
Brass C260 conducts heat better: 121 W/m·K against 0.17 W/m·K for FDM ASA.
Which expands less with temperature?
Brass C260 expands less: 20 µm/m·K against 95 µm/m·K for FDM ASA.