Materials / Compare
Aluminum 7050-T7451 vs. Brass C360
Compare Aluminum 7050-T7451 vs. Brass C360 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 | 469MPasourcetypical, longitudinal, 0.2% offset | 310MPasourcetypical, 0.5% extension under load |
| Ultimate tensile strength | 524MPasourcetypical, longitudinal | 400MPasourcetypical |
| Elongation at break | 11%sourcetypical, longitudinal | 25%sourcetypical, 1 in. rod |
| Young's modulus (stiffness) | 70.3GPasourcetypical | 96.5GPasourcetypical, temper-independent |
| Density | 2,830kg/m³sourcenominal3x lighter | 8,498kg/m³sourcenominal |
| Strength to weight | 166kN·m/kg4.54x higher | 36.5kN·m/kg |
| Stiffness to weight | 24.8MN·m/kg2.19x higher | 11.4MN·m/kg |
| Poisson's ratio | 0.33sourcetypical (handbook physical constant) | 0.34sourcebase material: leaded free-machining brass CuZn39Pb2 (C37700), Wieland-Z30 rolled products, reference value at room temperature |
| Shear modulus | 26.4GPa | 36GPa36% stiffer in shear |
| Bulk modulus | 68.9GPa | 101GPa |
| Speed of sound | 4,984m/s | 3,370m/s |
| Thermal | ||
| Thermal conductivity | 157W/m·Ksourcetypical, 20 °C35% more heat through a fin | 116W/m·Ksourcetypical, 20 °C |
| Thermal expansion | 23.5µm/m·Ksourcetypical, mean 20-100 °C | 20.5µm/m·Ksourcetypical, mean 20-300 °C |
| 100 mm part over a 50 °C swing | 118µm growth | 103µm growth15% less |
| Specific heat | 860J/kg·Ksourcetypical, at 100 °C | 377J/kg·Ksourcetypical, 20 °C |
| Heats up and cools (diffusivity) | 64.5mm²/s1.78x faster | 36.2mm²/s |
| Thermal shock resistance | 29,862W/m2.49x more resistant | 11,997W/m |
| Melting point | 524–635°Csourcemelting range | 888–899°Csourcesolidus-liquidus |
| Values for | 7050-T7451 plate, Kaiser Aluminum sheet, coil & plate typical datasheet (longitudinal); Poisson from MIL-HDBK-5J | C36000 free-cutting brass, H02 half-hard rod 1 in. section (20% cold work), copper.org 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 Aluminum 7050-T7451 stronger than Brass C360?
Aluminum 7050-T7451 is stronger: its yield strength is 469 MPa against 310 MPa for Brass C360 (1.51x).
Which is lighter, Aluminum 7050-T7451 or Brass C360?
Aluminum 7050-T7451 is lighter: 2,830 kg/m³ against 8,498 kg/m³ for Brass C360.
Which is stiffer, Aluminum 7050-T7451 or Brass C360?
Brass C360 is stiffer: Young's modulus 96.5 GPa against 70.3 GPa for Aluminum 7050-T7451, so the same part in Brass C360 deflects less under the same load.
Which is lighter for the same job, Aluminum 7050-T7451 or Brass C360?
For the same stiffness or strength: Aluminum 7050-T7451 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 | Aluminum 7050-T7451 | Brass C360 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 2.19x heavier |
| Stiff beam (bending) | lighter | 2.56x heavier |
| Stiff panel or plate | lighter | 2.7x heavier |
| Strong rod or tie | lighter | 4.54x heavier |
| Strong beam | lighter | 3.96x heavier |
| Strong panel or plate | lighter | 3.69x 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, Aluminum 7050-T7451 or Brass C360?
Aluminum 7050-T7451 conducts heat better: 157 W/m·K against 116 W/m·K for Brass C360.
Which expands less with temperature?
Brass C360 expands less: 20.5 µm/m·K against 23.5 µm/m·K for Aluminum 7050-T7451.