Materials / Compare
Brass C360 vs. Steel AISI 1018
Compare Brass C360 vs. Steel AISI 1018 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 | 372MPasourceproducer-stated, cold drawn |
| Ultimate tensile strength | 400MPasourcetypical | 441MPasourceproducer-stated, cold drawn |
| Elongation at break | 25%sourcetypical, 1 in. rod | 15%sourcein 2 in (50.8 mm) |
| Young's modulus (stiffness) | 96.5GPasourcetypical, temper-independent | 200GPasourcebase material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018) |
| Density | 8,498kg/m³sourcenominal | 7,861kg/m³sourcebase material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018) |
| Strength to weight | 36.5kN·m/kg | 47.3kN·m/kg30% higher |
| Stiffness to weight | 11.4MN·m/kg | 25.4MN·m/kg2.24x higher |
| Poisson's ratio | 0.34sourcebase material: leaded free-machining brass CuZn39Pb2 (C37700), Wieland-Z30 rolled products, reference value at room temperature | 0.32sourcebase material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018) |
| Shear modulus | 36GPa | 75.7GPa2.1x stiffer in shear |
| Bulk modulus | 101GPa | 185GPa |
| Speed of sound | 3,370m/s | 5,043m/s |
| Thermal | ||
| Thermal conductivity | 116W/m·Ksourcetypical, 20 °C | 51.9W/m·Ksourcebase material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018) |
| Thermal expansion | 20.5µm/m·Ksourcetypical, mean 20-300 °C | 12µm/m·Ksourcebase material: unalloyed carbon steel, Ovako family table (S275JR, 'none alloyed structural steels', C <= 0.21%); mean 20-300 °C |
| 100 mm part over a 50 °C swing | 103µm growth | 60µm growth1.71x less |
| Specific heat | 377J/kg·Ksourcetypical, 20 °C | 486J/kg·Ksourcebase material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018) |
| Heats up and cools (diffusivity) | 36.2mm²/s2.67x faster | 13.6mm²/s |
| Thermal shock resistance | 11,997W/m2.19x more resistant | 5,473W/m |
| Melting point | 888–899°Csourcesolidus-liquidus | not sourced |
| Values for | C36000 free-cutting brass, H02 half-hard rod 1 in. section (20% cold work), copper.org typical values | AISI 1018 cold drawn bar (Niagara LaSalle, cold-finished bar producer) |
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 Steel AISI 1018?
Steel AISI 1018 is stronger: its yield strength is 372 MPa against 310 MPa for Brass C360 (20%).
Which is lighter, Brass C360 or Steel AISI 1018?
Steel AISI 1018 is lighter: 7,861 kg/m³ against 8,498 kg/m³ for Brass C360.
Which is stiffer, Brass C360 or Steel AISI 1018?
Steel AISI 1018 is stiffer: Young's modulus 200 GPa against 96.5 GPa for Brass C360, so the same part in Steel AISI 1018 deflects less under the same load.
Which is lighter for the same job, Brass C360 or Steel AISI 1018?
For the same stiffness or strength: Steel AISI 1018 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 | Steel AISI 1018 |
|---|---|---|
| Stiff rod or tie (tension) | 2.24x heavier | lighter |
| Stiff beam (bending) | 1.56x heavier | lighter |
| Stiff panel or plate | 38% heavier | lighter |
| Strong rod or tie | 30% heavier | lighter |
| Strong beam | 22% heavier | lighter |
| Strong panel or plate | 18% 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 Steel AISI 1018?
Brass C360 conducts heat better: 116 W/m·K against 51.9 W/m·K for Steel AISI 1018.
Which expands less with temperature?
Steel AISI 1018 expands less: 12 µm/m·K against 20.5 µm/m·K for Brass C360.