ACI-ASTM CK20 Steel vs. C18600 Copper
ACI-ASTM CK20 steel belongs to the iron alloys classification, while C18600 copper belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is ACI-ASTM CK20 steel and the bottom bar is C18600 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 120 |
| Elongation at Break, % | 37 | |
| 8.0 to 11 |
| Poisson's Ratio | 0.28 | |
| 0.34 |
| Shear Modulus, GPa | 78 | |
| 44 |
| Tensile Strength: Ultimate (UTS), MPa | 530 | |
| 520 to 580 |
| Tensile Strength: Yield (Proof), MPa | 260 | |
| 500 to 520 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 210 |
| Maximum Temperature: Mechanical, °C | 1100 | |
| 200 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1090 |
| Melting Onset (Solidus), °C | 1430 | |
| 1070 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 390 |
| Thermal Conductivity, W/m-K | 14 | |
| 280 |
| Thermal Expansion, µm/m-K | 15 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 70 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.3 | |
| 71 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 25 | |
| 31 |
| Density, g/cm3 | 7.8 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 4.4 | |
| 2.9 |
| Embodied Energy, MJ/kg | 62 | |
| 46 |
| Embodied Water, L/kg | 190 | |
| 310 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 160 | |
| 44 to 58 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 170 | |
| 1060 to 1180 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.3 |
| Stiffness to Weight: Bending, points | 25 | |
| 18 |
| Strength to Weight: Axial, points | 19 | |
| 16 to 18 |
| Strength to Weight: Bending, points | 19 | |
| 16 to 17 |
| Thermal Diffusivity, mm2/s | 3.7 | |
| 81 |
| Thermal Shock Resistance, points | 13 | |
| 19 to 20 |
Alloy Composition
| Carbon (C), % | 0 to 0.2 | |
| 0 |
| Chromium (Cr), % | 23 to 27 | |
| 0.1 to 1.0 |
| Cobalt (Co), % | 0 | |
| 0 to 0.1 |
| Copper (Cu), % | 0 | |
| 96.5 to 99.55 |
| Iron (Fe), % | 46.7 to 58 | |
| 0.25 to 0.8 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 |
| Nickel (Ni), % | 19 to 22 | |
| 0 to 0.25 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 2.0 | |
| 0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0.050 to 0.5 |
| Zirconium (Zr), % | 0 | |
| 0.050 to 0.4 |
| Residuals, % | 0 | |
| 0 to 0.5 |