Materials / Compare
Brass C260 vs. Steel AISI 1018
Compare Brass C260 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 | 345MPasourcenominal, strip/flat, 0.5% extension (not 0.2% offset) | 372MPasourceproducer-stated, cold drawn |
| Ultimate tensile strength | 427MPasourcenominal, strip/flat | 441MPasourceproducer-stated, cold drawn |
| Elongation at break | 23%sourcenominal, in 2.0 in., strip/flat | 15%sourcein 2 in (50.8 mm) |
| Young's modulus (stiffness) | 110GPasourcetypical, 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 | 8,525kg/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 | 40.5kN·m/kg | 47.3kN·m/kg17% higher |
| Stiffness to weight | 12.9MN·m/kg | 25.4MN·m/kg1.97x higher |
| Poisson's ratio | 0.34sourcereference value at room temperature (Wieland-M30 = CuZn30 = C26000, rolled products) | 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 | 41.2GPa | 75.7GPa1.84x stiffer in shear |
| Bulk modulus | 115GPa | 185GPa |
| Speed of sound | 3,597m/s | 5,043m/s |
| Thermal | ||
| Thermal conductivity | 121W/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 | 20µm/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 | 100µm growth | 60µm growth1.67x 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) | 37.7mm²/s2.78x faster | 13.6mm²/s |
| Thermal shock resistance | 12,510W/m2.29x more resistant | 5,473W/m |
| Melting point | 916–954°Csourcesolidus-liquidus | not sourced |
| Values for | C26000 cartridge brass, H02 half hard flat/strip: CDA Electronic Connector Design Guide (mechanical) + CDA alloy page (physical) | 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 C260 stronger than Steel AISI 1018?
Steel AISI 1018 is stronger: its yield strength is 372 MPa against 345 MPa for Brass C260 (8%).
Which is lighter, Brass C260 or Steel AISI 1018?
Steel AISI 1018 is lighter: 7,861 kg/m³ against 8,525 kg/m³ for Brass C260.
Which is stiffer, Brass C260 or Steel AISI 1018?
Steel AISI 1018 is stiffer: Young's modulus 200 GPa against 110 GPa for Brass C260, so the same part in Steel AISI 1018 deflects less under the same load.
Which is lighter for the same job, Brass C260 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 C260 | Steel AISI 1018 |
|---|---|---|
| Stiff rod or tie (tension) | 1.97x heavier | lighter |
| Stiff beam (bending) | 46% heavier | lighter |
| Stiff panel or plate | 32% heavier | lighter |
| Strong rod or tie | 17% heavier | lighter |
| Strong beam | 14% heavier | lighter |
| Strong panel or plate | 13% 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 Steel AISI 1018?
Brass C260 conducts heat better: 121 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 µm/m·K for Brass C260.