ACI-ASTM CB7Cu-1 Steel vs. EN 1.6771 Steel
Both ACI-ASTM CB7Cu-1 steel and EN 1.6771 steel are iron alloys. They have 81% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is ACI-ASTM CB7Cu-1 steel and the bottom bar is EN 1.6771 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 300 to 420 | |
| 280 to 350 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 5.7 to 11 | |
| 8.0 to 8.7 |
| Fatigue Strength, MPa | 420 to 590 | |
| 440 to 680 |
| Impact Strength: V-Notched Charpy, J | 34 | |
| 20 to 32 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 76 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 960 to 1350 | |
| 930 to 1180 |
| Tensile Strength: Yield (Proof), MPa | 760 to 1180 | |
| 740 to 1140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 250 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1460 |
| Melting Onset (Solidus), °C | 1500 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 17 | |
| 46 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 8.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.3 | |
| 9.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 5.0 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 1.9 |
| Embodied Energy, MJ/kg | 38 | |
| 25 |
| Embodied Water, L/kg | 130 | |
| 58 |
Common Calculations
| PREN (Pitting Resistance) | 17 | |
| 2.5 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 120 | |
| 75 to 93 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1500 to 3590 | |
| 1460 to 3450 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 34 to 48 | |
| 33 to 41 |
| Strength to Weight: Bending, points | 28 to 35 | |
| 27 to 31 |
| Thermal Diffusivity, mm2/s | 4.6 | |
| 13 |
| Thermal Shock Resistance, points | 32 to 45 | |
| 27 to 35 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0.27 to 0.33 |
| Chromium (Cr), % | 15.5 to 17.7 | |
| 0.8 to 1.2 |
| Copper (Cu), % | 2.5 to 3.2 | |
| 0 |
| Iron (Fe), % | 72.3 to 78.4 | |
| 92.2 to 95 |
| Manganese (Mn), % | 0 to 0.7 | |
| 0.6 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0.3 to 0.6 |
| Nickel (Ni), % | 3.6 to 4.6 | |
| 3.0 to 4.0 |
| Niobium (Nb), % | 0 to 0.35 | |
| 0 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.020 |