Materials / Compare
Brass C360 vs. Magnesium AZ31B-H24
Compare Brass C360 vs. Magnesium AZ31B-H24 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 | 220MPasourcetypical, H24, 0.5-6 mm, 0.2 % proof stress |
| Ultimate tensile strength | 400MPasourcetypical | 290MPasourcetypical, H24, 0.5-6 mm |
| Elongation at break | 25%sourcetypical, 1 in. rod | 13%sourcetypical, H24, 0.5-6 mm, gauge 5.65√A |
| Young's modulus (stiffness) | 96.5GPasourcetypical, temper-independent | 44.8GPasourcetypical (handbook physical constant) |
| Density | 8,498kg/m³sourcenominal | 1,769kg/m³sourcenominal4.8x lighter |
| Strength to weight | 36.5kN·m/kg | 124kN·m/kg3.41x higher |
| Stiffness to weight | 11.4MN·m/kg | 25.3MN·m/kg2.23x higher |
| Poisson's ratio | 0.34sourcebase material: leaded free-machining brass CuZn39Pb2 (C37700), Wieland-Z30 rolled products, reference value at room temperature | 0.35sourcetypical (handbook physical constant) |
| Shear modulus | 36GPa2.17x stiffer in shear | 16.6GPa |
| Bulk modulus | 101GPa | 49.8GPa |
| Speed of sound | 3,370m/s | 5,032m/s |
| Thermal | ||
| Thermal conductivity | 116W/m·Ksourcetypical, 20 °C | 76.9W/m·Ksourcetypical (temper/temperature not stated) |
| Thermal expansion | 20.5µm/m·Ksourcetypical, mean 20-300 °C | 26.8µm/m·Ksourcetypical (temperature range not stated) |
| 100 mm part over a 50 °C swing | 103µm growth31% less | 134µm growth |
| Specific heat | 377J/kg·Ksourcetypical, 20 °C | 1,040J/kg·Ksourcetypical |
| Heats up and cools (diffusivity) | 36.2mm²/s | 41.8mm²/s15% faster |
| Thermal shock resistance | 11,997W/m31% more resistant | 9,159W/m |
| Melting point | 888–899°Csourcesolidus-liquidus | not sourced |
| Max service temperature | not sourced | 149°Csourcestated application limit |
| Values for | C36000 free-cutting brass, H02 half-hard rod 1 in. section (20% cold work), copper.org typical values | AZ31B-H24 sheet 0.016-0.062 in., MIL-HDBK-5J Table 4.2.1.0(b) (AMS 4377); strengths are S-basis MINIMUMS |
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 Magnesium AZ31B-H24?
Brass C360 is stronger: its yield strength is 310 MPa against 220 MPa for Magnesium AZ31B-H24 (41%).
Which is lighter, Brass C360 or Magnesium AZ31B-H24?
Magnesium AZ31B-H24 is lighter: 1,769 kg/m³ against 8,498 kg/m³ for Brass C360.
Which is stiffer, Brass C360 or Magnesium AZ31B-H24?
Brass C360 is stiffer: Young's modulus 96.5 GPa against 44.8 GPa for Magnesium AZ31B-H24, so the same part in Brass C360 deflects less under the same load.
Which is lighter for the same job, Brass C360 or Magnesium AZ31B-H24?
For the same stiffness or strength: Magnesium AZ31B-H24 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 C360 | Magnesium AZ31B-H24 |
|---|---|---|
| Stiff rod or tie (tension) | 2.23x heavier | lighter |
| Stiff beam (bending) | 3.27x heavier | lighter |
| Stiff panel or plate | 3.72x heavier | lighter |
| Strong rod or tie | 3.41x heavier | lighter |
| Strong beam | 3.82x heavier | lighter |
| Strong panel or plate | 4.05x 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 C360 or Magnesium AZ31B-H24?
Brass C360 conducts heat better: 116 W/m·K against 76.9 W/m·K for Magnesium AZ31B-H24.
Which expands less with temperature?
Brass C360 expands less: 20.5 µm/m·K against 26.8 µm/m·K for Magnesium AZ31B-H24.