Materials / Compare
Aluminum 5052-H32 vs. Stainless 303
Compare Aluminum 5052-H32 vs. Stainless 303 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 | 195MPasourcetypical, 0.2% offset | 275MPasourceOutokumpu typical (product P = hot rolled plate, transverse) |
| Ultimate tensile strength | 230MPasourcetypical | 585MPasourceOutokumpu typical |
| Elongation at break | 12%sourcetypical | 35%sourceOutokumpu typical, A5 |
| Young's modulus (stiffness) | 70GPasourcetypical | 200GPasourceat RT (Table 12) |
| Density | 2,685kg/m³sourcenominal | 7,900kg/m³sourceat RT |
| Strength to weight | 72.6kN·m/kg2.09x higher | 34.8kN·m/kg |
| Stiffness to weight | 26.1MN·m/kg3% higher | 25.3MN·m/kg |
| Poisson's ratio | 0.33sourcetypical (handbook physical constant) | 0.3sourcedesign value (structural stainless steels) |
| Shear modulus | 26.3GPa | 76.9GPa2.92x stiffer in shear |
| Bulk modulus | 68.6GPa | 167GPa |
| Speed of sound | 5,106m/s | 5,032m/s |
| Thermal | ||
| Thermal conductivity | 138W/m·Ksourcebase material: 5052 in O temper (same alloy, annealed); Kaiser typical | 15W/m·Ksourceat RT |
| Thermal expansion | 23.8µm/m·Ksourcetypical, mean 20-100 °C | 16µm/m·Ksourcemean, 20–100 °C |
| 100 mm part over a 50 °C swing | 119µm growth | 80µm growth49% less |
| Specific heat | 963J/kg·Ksourceat 100 °C (212 °F); table covers O, H32, H34, H36, H38 | 500J/kg·Ksourceat RT |
| Heats up and cools (diffusivity) | 53.4mm²/s14.1x faster | 3.8mm²/s |
| Thermal shock resistance | 10,822W/m12x more resistant | 902W/m |
| Melting point | 605–650°Csourcemelting range | not sourced |
| Max service temperature | not sourced | 871°Csourcecontinuous, scaling limit |
| Values for | 5052-H32, Kaiser Aluminum tube & pipe typical datasheet (mechanical, CTE, melting); MIL-HDBK-5J (Poisson, density, specific heat) | 1.4305 / UNS S30300, Outokumpu typical values (hot rolled, solution annealed) from 'Steel Grades, Properties and Global Standards'; max service from Carpenter CarTech 303 datasheet |
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 5052-H32 stronger than Stainless 303?
Stainless 303 is stronger: its yield strength is 275 MPa against 195 MPa for Aluminum 5052-H32 (41%).
Which is lighter, Aluminum 5052-H32 or Stainless 303?
Aluminum 5052-H32 is lighter: 2,685 kg/m³ against 7,900 kg/m³ for Stainless 303.
Which is stiffer, Aluminum 5052-H32 or Stainless 303?
Stainless 303 is stiffer: Young's modulus 200 GPa against 70 GPa for Aluminum 5052-H32, so the same part in Stainless 303 deflects less under the same load.
Which is lighter for the same job, Aluminum 5052-H32 or Stainless 303?
For the same stiffness or strength: Aluminum 5052-H32 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 5052-H32 | Stainless 303 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 3% heavier |
| Stiff beam (bending) | lighter | 1.74x heavier |
| Stiff panel or plate | lighter | 2.07x heavier |
| Strong rod or tie | lighter | 2.09x heavier |
| Strong beam | lighter | 2.34x heavier |
| Strong panel or plate | lighter | 2.48x 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 5052-H32 or Stainless 303?
Aluminum 5052-H32 conducts heat better: 138 W/m·K against 15 W/m·K for Stainless 303.
Which expands less with temperature?
Stainless 303 expands less: 16 µm/m·K against 23.8 µm/m·K for Aluminum 5052-H32.