Materials / Compare
Brass C260 vs. Plastic PPS GF40
Compare Brass C260 vs. Plastic PPS GF40 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) | not given (tensile used) |
| Ultimate tensile strength | 427MPasourcenominal, strip/flat | 195MPasourcetensile strength, 5 mm/min |
| Flexural strength | not sourced | 285MPasourceflexural strength at break |
| Elongation at break | 23%sourcenominal, in 2.0 in., strip/flat | 1.9%sourcestrain at break, 5 mm/min |
| Young's modulus (stiffness) | 110GPasourcetypical, temper-independent | 14.7GPasourcetypical, 1 mm/min |
| Density | 8,525kg/m³sourcenominal | 1,650kg/m³sourcetypical |
| Strength to weight | 40.5kN·m/kg | 118kN·m/kg2.92x higher |
| Stiffness to weight | 12.9MN·m/kg45% higher | 8.91MN·m/kg |
| Poisson's ratio | 0.34sourcereference value at room temperature (Wieland-M30 = CuZn30 = C26000, rolled products) | 0.35sourceglass-reinforced Fortron PPS (class value, not grade-specific) |
| Shear modulus | 41.2GPa7.56x stiffer in shear | 5.44GPa |
| Bulk modulus | 115GPa | 16.3GPa |
| Speed of sound | 3,597m/s | 2,985m/s |
| Thermal | ||
| Thermal conductivity | 121W/m·Ksourcetypical, 20 °C | 0.2W/m·Ksource40% glass-reinforced Fortron, 25 °C (not grade-specific) |
| Thermal expansion | 20µm/m·Ksourcetypical, mean 20-300 °C | 12µm/m·Ksourceparallel (flow), mean -50 to 90 °C |
| 100 mm part over a 50 °C swing | 100µm growth | 60µm growth1.67x less |
| Specific heat | 377J/kg·Ksourcetypical, 20 °C | not sourced |
| Heats up and cools (diffusivity) | 37.7mm²/s | not sourced |
| Thermal shock resistance | 12,510W/m87.1x more resistant | 144W/m |
| Melting point | 916–954°Csourcesolidus-liquidus | 280°CsourceDSC, 10 °C/min |
| Glass transition | not sourced | 90°CsourceDSC, 10 °C/min |
| Max service temperature | not sourced | 270°CsourceHDT 1.8 MPa |
| Values for | C26000 cartridge brass, H02 half hard flat/strip: CDA Electronic Connector Design Guide (mechanical) + CDA alloy page (physical) | Celanese Fortron 1140L4 (PPS, 40% glass fibre), injection moulding; FORTRON PPS Short-Term Properties Guide (PPS-012, 2016); thermal conductivity and Poisson for 40% glass-reinforced Fortron from the Fortron PPS Design Manual (PPS-050, 2013). |
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 PPS GF40?
Brass C260 is stronger: its yield strength is 345 MPa against tensile strength 195 MPa for Plastic PPS GF40 (1.77x).
Which is lighter, Brass C260 or Plastic PPS GF40?
Plastic PPS GF40 is lighter: 1,650 kg/m³ against 8,525 kg/m³ for Brass C260.
Which is stiffer, Brass C260 or Plastic PPS GF40?
Brass C260 is stiffer: Young's modulus 110 GPa against 14.7 GPa for Plastic PPS GF40, so the same part in Brass C260 deflects less under the same load.
Which is lighter for the same job, Brass C260 or Plastic PPS GF40?
For the same stiffness or strength: Brass C260 is lighter for a stiff rod or tie (tension); Plastic PPS GF40 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 PPS GF40 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 45% heavier |
| Stiff beam (bending) | 1.89x heavier | lighter |
| Stiff panel or plate | 2.64x heavier | lighter |
| Strong rod or tie | 2.92x heavier | lighter |
| Strong beam | 3.53x heavier | lighter |
| Strong panel or plate | 3.88x 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 PPS GF40?
Brass C260 conducts heat better: 121 W/m·K against 0.2 W/m·K for Plastic PPS GF40.
Which expands less with temperature?
Plastic PPS GF40 expands less: 12 µm/m·K against 20 µm/m·K for Brass C260.