Materials / Compare
Brass C260 vs. Plastic Nylon PA66
Compare Brass C260 vs. Plastic Nylon PA66 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) | 85MPasourcetypical, dry |
| Ultimate tensile strength | 427MPasourcenominal, strip/flat | not sourced |
| Elongation at break | 23%sourcenominal, in 2.0 in., strip/flat | 30%sourcenominal strain at break, dry |
| Young's modulus (stiffness) | 110GPasourcetypical, temper-independent | 3GPasourcetypical, dry |
| Density | 8,525kg/m³sourcenominal | 1,130kg/m³sourcetypical |
| Strength to weight | 40.5kN·m/kg | 75.2kN·m/kg1.86x higher |
| Stiffness to weight | 12.9MN·m/kg4.87x higher | 2.65MN·m/kg |
| Poisson's ratio | 0.34sourcereference value at room temperature (Wieland-M30 = CuZn30 = C26000, rolled products) | 0.4sourcebase material: unfilled polyamide (PA), conditioned, maker design-guide family value (Covestro Table 3-1) |
| Shear modulus | 41.2GPa38.4x stiffer in shear | 1.07GPa |
| Bulk modulus | 115GPa | 5GPa |
| Speed of sound | 3,597m/s | 1,629m/s |
| Thermal | ||
| Thermal conductivity | 121W/m·Ksourcetypical, 20 °C | 0.33W/m·Ksourcetypical |
| Thermal expansion | 20µm/m·Ksourcetypical, mean 20-300 °C | 98µm/m·Ksourcelongitudinal, 23-55 °C |
| 100 mm part over a 50 °C swing | 100µm growth4.9x less | 490µm growth |
| Specific heat | 377J/kg·Ksourcetypical, 20 °C | 1,700J/kg·Ksourcetypical |
| Heats up and cools (diffusivity) | 37.7mm²/s220x faster | 0.172mm²/s |
| Thermal shock resistance | 12,510W/m219x more resistant | 57.2W/m |
| Melting point | 916–954°Csourcesolidus-liquidus | 260°CsourceDSC |
| Max service temperature | not sourced | 101°CsourceIEC 60216 temperature index, 20000 h |
| Values for | C26000 cartridge brass, H02 half hard flat/strip: CDA Electronic Connector Design Guide (mechanical) + CDA alloy page (physical) | BASF Ultramid A3K (PA66, unreinforced injection-moulding grade), Product Information 02/2026, dry values (ISO methods) |
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 Nylon PA66?
Brass C260 is stronger: its yield strength is 345 MPa against 85 MPa for Plastic Nylon PA66 (4.06x).
Which is lighter, Brass C260 or Plastic Nylon PA66?
Plastic Nylon PA66 is lighter: 1,130 kg/m³ against 8,525 kg/m³ for Brass C260.
Which is stiffer, Brass C260 or Plastic Nylon PA66?
Brass C260 is stiffer: Young's modulus 110 GPa against 3 GPa for Plastic Nylon PA66, so the same part in Brass C260 deflects less under the same load.
Which is lighter for the same job, Brass C260 or Plastic Nylon PA66?
For the same stiffness or strength: Brass C260 is lighter for a stiff rod or tie (tension); Plastic Nylon PA66 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 Nylon PA66 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 4.87x heavier |
| Stiff beam (bending) | 24% heavier | lighter |
| Stiff panel or plate | 2.27x heavier | lighter |
| Strong rod or tie | 1.86x heavier | lighter |
| Strong beam | 2.96x heavier | lighter |
| Strong panel or plate | 3.74x 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 Nylon PA66?
Brass C260 conducts heat better: 121 W/m·K against 0.33 W/m·K for Plastic Nylon PA66.
Which expands less with temperature?
Brass C260 expands less: 20 µm/m·K against 98 µm/m·K for Plastic Nylon PA66.