Materials / Compare
Brass C260 vs. Nickel Inconel 718
Compare Brass C260 vs. Nickel Inconel 718 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) | 1,207MPasourcetypical, 1.0 in. hot-rolled bar, 0.2% offset |
| Ultimate tensile strength | 427MPasourcenominal, strip/flat | 1,389MPasourcetypical, 1.0 in. bar |
| Elongation at break | 23%sourcenominal, in 2.0 in., strip/flat | 20%sourcetypical, 1.0 in. bar |
| Young's modulus (stiffness) | 110GPasourcetypical, temper-independent | 200GPasourcetypical, 21 °C, annealed + aged |
| Density | 8,525kg/m³sourcenominal | 8,221kg/m³sourcenominal, annealed and aged |
| Strength to weight | 40.5kN·m/kg | 147kN·m/kg3.63x higher |
| Stiffness to weight | 12.9MN·m/kg | 24.3MN·m/kg1.88x higher |
| Poisson's ratio | 0.34sourcereference value at room temperature (Wieland-M30 = CuZn30 = C26000, rolled products) | 0.294sourcetypical, 21 °C, annealed + aged |
| Shear modulus | 41.2GPa | 77.3GPa1.88x stiffer in shear |
| Bulk modulus | 115GPa | 162GPa |
| Speed of sound | 3,597m/s | 4,932m/s |
| Thermal | ||
| Thermal conductivity | 121W/m·Ksourcetypical, 20 °C | 11.4W/m·Ksourcetypical, 21 °C, annealed + aged (calculated from resistivity per footnote a) |
| Thermal expansion | 20µm/m·Ksourcetypical, mean 20-300 °C | 13.2µm/m·Ksourcetypical, mean 21-93 °C, annealed + aged |
| 100 mm part over a 50 °C swing | 100µm growth | 66µm growth1.52x less |
| Specific heat | 377J/kg·Ksourcetypical, 20 °C | 435J/kg·Ksourcetypical, 21 °C |
| Heats up and cools (diffusivity) | 37.7mm²/s11.8x faster | 3.19mm²/s |
| Thermal shock resistance | 12,510W/m3.4x more resistant | 3,680W/m |
| Melting point | 916–954°Csourcesolidus-liquidus | 1,260–1,336°Csourcemelting range |
| Max service temperature | not sourced | 704°Csourceupper use temperature stated by producer |
| Values for | C26000 cartridge brass, H02 half hard flat/strip: CDA Electronic Connector Design Guide (mechanical) + CDA alloy page (physical) | INCONEL alloy 718, standard grade, 1750 °F/1 hr anneal + 1325 °F/8 hr F.C. to 1150 °F aged; Special Metals bulletin SMC-045 typical values |
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 Nickel Inconel 718?
Nickel Inconel 718 is stronger: its yield strength is 1,207 MPa against 345 MPa for Brass C260 (3.5x).
Which is lighter, Brass C260 or Nickel Inconel 718?
Nickel Inconel 718 is lighter: 8,221 kg/m³ against 8,525 kg/m³ for Brass C260.
Which is stiffer, Brass C260 or Nickel Inconel 718?
Nickel Inconel 718 is stiffer: Young's modulus 200 GPa against 110 GPa for Brass C260, so the same part in Nickel Inconel 718 deflects less under the same load.
Which is lighter for the same job, Brass C260 or Nickel Inconel 718?
For the same stiffness or strength: Nickel Inconel 718 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Brass C260 | Nickel Inconel 718 |
|---|---|---|
| Stiff rod or tie (tension) | 1.88x heavier | lighter |
| Stiff beam (bending) | 40% heavier | lighter |
| Stiff panel or plate | 26% heavier | lighter |
| Strong rod or tie | 3.63x heavier | lighter |
| Strong beam | 2.39x heavier | lighter |
| Strong panel or plate | 1.94x 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 Nickel Inconel 718?
Brass C260 conducts heat better: 121 W/m·K against 11.4 W/m·K for Nickel Inconel 718.
Which expands less with temperature?
Nickel Inconel 718 expands less: 13.2 µm/m·K against 20 µm/m·K for Brass C260.