ASTM A231 Spring Steel vs. C55180 Copper
ASTM A231 spring steel belongs to the iron alloys classification, while C55180 copper belongs to the copper alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is ASTM A231 spring steel and the bottom bar is C55180 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 110 |
| Elongation at Break, % | 14 | |
| 20 |
| Poisson's Ratio | 0.29 | |
| 0.34 |
| Shear Modulus, GPa | 73 | |
| 41 |
| Tensile Strength: Ultimate (UTS), MPa | 1790 | |
| 200 |
| Tensile Strength: Yield (Proof), MPa | 1570 | |
| 100 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 200 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 200 |
| Melting Completion (Liquidus), °C | 1460 | |
| 920 |
| Melting Onset (Solidus), °C | 1410 | |
| 710 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 400 |
| Thermal Conductivity, W/m-K | 52 | |
| 200 |
| Thermal Expansion, µm/m-K | 13 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 | |
| 29 |
| Density, g/cm3 | 7.8 | |
| 8.6 |
| Embodied Carbon, kg CO2/kg material | 2.0 | |
| 2.5 |
| Embodied Energy, MJ/kg | 28 | |
| 39 |
| Embodied Water, L/kg | 51 | |
| 290 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 230 | |
| 34 |
| Stiffness to Weight: Axial, points | 13 | |
| 7.1 |
| Stiffness to Weight: Bending, points | 24 | |
| 18 |
| Strength to Weight: Axial, points | 64 | |
| 6.4 |
| Strength to Weight: Bending, points | 42 | |
| 8.8 |
| Thermal Diffusivity, mm2/s | 14 | |
| 56 |
| Thermal Shock Resistance, points | 53 | |
| 7.9 |
Alloy Composition
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| Carbon (C), % | 0.48 to 0.53 | |
| 0 |
| Chromium (Cr), % | 0.8 to 1.1 | |
| 0 |
| Copper (Cu), % | 0 | |
| 94.7 to 95.2 |
| Iron (Fe), % | 96.7 to 97.7 | |
| 0 |
| Manganese (Mn), % | 0.7 to 0.9 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 4.8 to 5.2 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 |
| Vanadium (V), % | 0.15 to 0.3 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.15 |