Materials / Compare
Brass C360 vs. Plastic PTFE
Compare Brass C360 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 | 310MPasourcetypical, 0.5% extension under load | 9MPasourcetypical yield strength at 23 °C (Teflon PTFE, Table 8) |
| Ultimate tensile strength | 400MPasourcetypical | 39.3MPasourcetypical, skived tape 0.13 mm |
| Elongation at break | 25%sourcetypical, 1 in. rod | 350%sourcetypical, skived tape 0.13 mm |
| Young's modulus (stiffness) | 96.5GPasourcetypical, temper-independent | not sourced |
| Density | 8,498kg/m³sourcenominal | 2,160kg/m³sourcetypical (standard specific gravity, ASTM D4894) |
| Strength to weight | 36.5kN·m/kg8.76x higher | 4.17kN·m/kg |
| Stiffness to weight | 11.4MN·m/kg | not sourced |
| Poisson's ratio | 0.34sourcebase material: leaded free-machining brass CuZn39Pb2 (C37700), Wieland-Z30 rolled products, reference value at room temperature | 0.46sourcetypical, 23 °C (Teflon PTFE resins, Chemours handbook) |
| Shear modulus | 36GPa | not sourced |
| Bulk modulus | 101GPa | not sourced |
| Speed of sound | 3,370m/s | not sourced |
| Thermal | ||
| Thermal conductivity | 116W/m·Ksourcetypical, 20 °C | 0.25W/m·Ksourcetypical, granular resin, 4.6 mm specimen |
| Thermal expansion | 20.5µm/m·Ksourcetypical, mean 20-300 °C | 100µm/m·Ksourcetypical, granular resin, 23-60 °C (ASTM E228) |
| 100 mm part over a 50 °C swing | 103µm growth4.88x 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) | 36.2mm²/s438x faster | 0.0827mm²/s |
| Thermal shock resistance | 11,997W/m | not sourced |
| Melting point | 888–899°Csourcesolidus-liquidus | 327°Csourcesecond melting peak (sintered polymer), +/-10 |
| Max service temperature | not sourced | 260°Csourceservice temperature (Chemours general Teflon PTFE statement) |
| Values for | C36000 free-cutting brass, H02 half-hard rod 1 in. section (20% cold work), copper.org typical values | 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 C360 stronger than Plastic PTFE?
Brass C360 is stronger: its yield strength is 310 MPa against 9 MPa for Plastic PTFE (34.4x).
Which is lighter, Brass C360 or Plastic PTFE?
Plastic PTFE is lighter: 2,160 kg/m³ against 8,498 kg/m³ for Brass C360.
Which is lighter for the same job, Brass C360 or Plastic PTFE?
For the same stiffness or strength: Brass C360 is lighter for a strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Brass C360 | Plastic PTFE |
|---|---|---|
| Strong rod or tie | lighter | 8.76x heavier |
| Strong beam | lighter | 2.69x heavier |
| Strong panel or plate | lighter | 49% 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 C360 or Plastic PTFE?
Brass C360 conducts heat better: 116 W/m·K against 0.25 W/m·K for Plastic PTFE.
Which expands less with temperature?
Brass C360 expands less: 20.5 µm/m·K against 100 µm/m·K for Plastic PTFE.