Materials / Compare
Brass C260 vs. Plastic ABS (bulk/injection)
Compare Brass C260 vs. Plastic ABS (bulk/injection) 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 | 345MPasourcenominal, strip/flat, 0.5% extension (not 0.2% offset) | 45MPasourcetypical, tensile stress at yield 23 °C |
| Ultimate tensile strength | 427MPasourcenominal, strip/flat | not sourced |
| Flexural strength | not sourced | 65MPasourcetypical, 23 °C |
| Elongation at break | 23%sourcenominal, in 2.0 in., strip/flat | 10%sourcenominal strain at break, 23 °C |
| Young's modulus (stiffness) | 110GPasourcetypical, temper-independent | 2.3GPasourcetypical |
| Density | 8,525kg/m³sourcenominal | 1,040kg/m³sourcetypical |
| Strength to weight | 40.5kN·m/kg | 43.3kN·m/kg7% higher |
| Stiffness to weight | 12.9MN·m/kg5.85x higher | 2.21MN·m/kg |
| Poisson's ratio | 0.34sourcereference value at room temperature (Wieland-M30 = CuZn30 = C26000, rolled products) | 0.39sourcetypical, ABS family (Covestro Part and Mold Design guide, Table 3-1) |
| Shear modulus | 41.2GPa49.7x stiffer in shear | 0.827GPa |
| Bulk modulus | 115GPa | 3.48GPa |
| Speed of sound | 3,597m/s | 1,487m/s |
| Thermal | ||
| Thermal conductivity | 121W/m·Ksourcetypical, 20 °C | 0.17W/m·Ksourcetypical |
| Thermal expansion | 20µm/m·Ksourcetypical, mean 20-300 °C | 80–110µm/m·Ksourcerange |
| 100 mm part over a 50 °C swing | 100µm growth4.75x less | 475µm growth |
| Specific heat | 377J/kg·Ksourcetypical, 20 °C | not sourced |
| Heats up and cools (diffusivity) | 37.7mm²/s | not sourced |
| Thermal shock resistance | 12,510W/m586x more resistant | 21.4W/m |
| Melting point | 916–954°Csourcesolidus-liquidus | not sourced |
| Max service temperature | not sourced | 94°CsourceHDT 1.8 MPa (annealed 4 h/80 °C) |
| Values for | C26000 cartridge brass, H02 half hard flat/strip: CDA Electronic Connector Design Guide (mechanical) + CDA alloy page (physical) | INEOS Styrolution Terluran GP-22 general-purpose injection-molding ABS, ISO typical values (TDS revision 08/01/2022) |
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.
Questions
Is Brass C260 stronger than Plastic ABS (bulk/injection)?
Brass C260 is stronger: its yield strength is 345 MPa against 45 MPa for Plastic ABS (bulk/injection) (7.67x).
Which is lighter, Brass C260 or Plastic ABS (bulk/injection)?
Plastic ABS (bulk/injection) is lighter: 1,040 kg/m³ against 8,525 kg/m³ for Brass C260.
Which is stiffer, Brass C260 or Plastic ABS (bulk/injection)?
Brass C260 is stiffer: Young's modulus 110 GPa against 2.3 GPa for Plastic ABS (bulk/injection), so the same part in Brass C260 deflects less under the same load.
Which is lighter for the same job, Brass C260 or Plastic ABS (bulk/injection)?
For the same stiffness or strength: Brass C260 is lighter for a stiff rod or tie (tension); Plastic ABS (bulk/injection) 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 | Brass C260 | Plastic ABS (bulk/injection) |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 5.85x heavier |
| Stiff beam (bending) | 18% heavier | lighter |
| Stiff panel or plate | 2.26x heavier | lighter |
| Strong rod or tie | 7% heavier | lighter |
| Strong beam | 2.11x heavier | lighter |
| Strong panel or plate | 2.96x 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, Brass C260 or Plastic ABS (bulk/injection)?
Brass C260 conducts heat better: 121 W/m·K against 0.17 W/m·K for Plastic ABS (bulk/injection).
Which expands less with temperature?
Brass C260 expands less: 20 µm/m·K against 95 µm/m·K for Plastic ABS (bulk/injection).