Materials / Compare
Brass C260 vs. Plastic PTFE
Compare Brass C260 vs. Plastic PTFE 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) | 9MPasourcetypical yield strength at 23 °C (Teflon PTFE, Table 8) |
| Ultimate tensile strength | 427MPasourcenominal, strip/flat | 39.3MPasourcetypical, skived tape 0.13 mm |
| Elongation at break | 23%sourcenominal, in 2.0 in., strip/flat | 350%sourcetypical, skived tape 0.13 mm |
| Young's modulus (stiffness) | 110GPasourcetypical, temper-independent | not sourced |
| Density | 8,525kg/m³sourcenominal | 2,160kg/m³sourcetypical (standard specific gravity, ASTM D4894) |
| Strength to weight | 40.5kN·m/kg9.71x higher | 4.17kN·m/kg |
| Stiffness to weight | 12.9MN·m/kg | not sourced |
| Poisson's ratio | 0.34sourcereference value at room temperature (Wieland-M30 = CuZn30 = C26000, rolled products) | 0.46sourcetypical, 23 °C (Teflon PTFE resins, Chemours handbook) |
| Shear modulus | 41.2GPa | not sourced |
| Bulk modulus | 115GPa | not sourced |
| Speed of sound | 3,597m/s | not sourced |
| Thermal | ||
| Thermal conductivity | 121W/m·Ksourcetypical, 20 °C | 0.25W/m·Ksourcetypical, granular resin, 4.6 mm specimen |
| Thermal expansion | 20µm/m·Ksourcetypical, mean 20-300 °C | 100µm/m·Ksourcetypical, granular resin, 23-60 °C (ASTM E228) |
| 100 mm part over a 50 °C swing | 100µm growth5x less | 500µm growth |
| Specific heat | 377J/kg·Ksourcetypical, 20 °C | 1,400J/kg·Ksourcetypical, granular resin, 20 °C (ASTM D4591) |
| Heats up and cools (diffusivity) | 37.7mm²/s456x faster | 0.0827mm²/s |
| Thermal shock resistance | 12,510W/m | not sourced |
| Melting point | 916–954°Csourcesolidus-liquidus | 327°Csourcesecond melting peak (sintered polymer), +/-10 |
| Max service temperature | not sourced | 260°Csourceservice temperature (Chemours general Teflon PTFE statement) |
| Values for | C26000 cartridge brass, H02 half hard flat/strip: CDA Electronic Connector Design Guide (mechanical) + CDA alloy page (physical) | Chemours Teflon PTFE 7C X granular molding resin, typical values (tensile/elongation measured on 0.13 mm skived tape) |
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 PTFE?
Brass C260 is stronger: its yield strength is 345 MPa against 9 MPa for Plastic PTFE (38.3x).
Which is lighter, Brass C260 or Plastic PTFE?
Plastic PTFE is lighter: 2,160 kg/m³ against 8,525 kg/m³ for Brass C260.
Which is lighter for the same job, Brass C260 or Plastic PTFE?
For the same stiffness or strength: Brass C260 is lighter for a strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Brass C260 | Plastic PTFE |
|---|---|---|
| Strong rod or tie | lighter | 9.71x heavier |
| Strong beam | lighter | 2.88x heavier |
| Strong panel or plate | lighter | 1.57x 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, Brass C260 or Plastic PTFE?
Brass C260 conducts heat better: 121 W/m·K against 0.25 W/m·K for Plastic PTFE.
Which expands less with temperature?
Brass C260 expands less: 20 µm/m·K against 100 µm/m·K for Plastic PTFE.