ACI-ASTM CB7Cu-1 Steel vs. EN 1.4640 Stainless Steel
Both ACI-ASTM CB7Cu-1 steel and EN 1.4640 stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 1.4640 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 300 to 420 | |
| 190 to 200 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 5.7 to 11 | |
| 51 |
| Fatigue Strength, MPa | 420 to 590 | |
| 230 to 250 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 960 to 1350 | |
| 620 to 650 |
| Tensile Strength: Yield (Proof), MPa | 760 to 1180 | |
| 240 to 260 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 280 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1420 |
| Melting Onset (Solidus), °C | 1500 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 17 | |
| 15 |
| Thermal Expansion, µm/m-K | 11 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.3 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 14 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 2.8 |
| Embodied Energy, MJ/kg | 38 | |
| 40 |
| Embodied Water, L/kg | 130 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 17 | |
| 20 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 120 | |
| 250 to 260 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1500 to 3590 | |
| 150 to 170 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 34 to 48 | |
| 22 to 23 |
| Strength to Weight: Bending, points | 28 to 35 | |
| 21 |
| Thermal Diffusivity, mm2/s | 4.6 | |
| 4.0 |
| Thermal Shock Resistance, points | 32 to 45 | |
| 14 to 15 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0.030 to 0.080 |
| Chromium (Cr), % | 15.5 to 17.7 | |
| 18 to 19 |
| Copper (Cu), % | 2.5 to 3.2 | |
| 1.3 to 2.0 |
| Iron (Fe), % | 72.3 to 78.4 | |
| 67.4 to 73.6 |
| Manganese (Mn), % | 0 to 0.7 | |
| 1.5 to 4.0 |
| Nickel (Ni), % | 3.6 to 4.6 | |
| 5.5 to 6.9 |
| Niobium (Nb), % | 0 to 0.35 | |
| 0 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0.030 to 0.11 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |