ACI-ASTM CB7Cu-2 Steel vs. Nickel 690
ACI-ASTM CB7Cu-2 steel belongs to the iron alloys classification, while nickel 690 belongs to the nickel alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is ACI-ASTM CB7Cu-2 steel and the bottom bar is nickel 690.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 300 to 420 | |
| 90 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 5.7 to 11 | |
| 3.4 to 34 |
| Fatigue Strength, MPa | 420 to 590 | |
| 180 to 300 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 75 | |
| 79 |
| Tensile Strength: Ultimate (UTS), MPa | 960 to 1350 | |
| 640 to 990 |
| Tensile Strength: Yield (Proof), MPa | 760 to 1180 | |
| 250 to 760 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 320 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1380 |
| Melting Onset (Solidus), °C | 1380 | |
| 1340 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 17 | |
| 14 |
| Thermal Expansion, µm/m-K | 11 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.1 | |
| 1.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.4 | |
| 1.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 50 |
| Density, g/cm3 | 7.8 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 8.2 |
| Embodied Energy, MJ/kg | 38 | |
| 120 |
| Embodied Water, L/kg | 130 | |
| 290 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 120 | |
| 31 to 170 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1510 to 3600 | |
| 160 to 1440 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 34 to 48 | |
| 21 to 33 |
| Strength to Weight: Bending, points | 28 to 35 | |
| 20 to 27 |
| Thermal Diffusivity, mm2/s | 4.6 | |
| 3.5 |
| Thermal Shock Resistance, points | 32 to 45 | |
| 16 to 25 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0 to 0.050 |
| Chromium (Cr), % | 14 to 15.5 | |
| 27 to 31 |
| Copper (Cu), % | 2.5 to 3.2 | |
| 0 to 0.5 |
| Iron (Fe), % | 73.6 to 79 | |
| 7.0 to 11 |
| Manganese (Mn), % | 0 to 0.7 | |
| 0 to 0.5 |
| Nickel (Ni), % | 4.5 to 5.5 | |
| 58 to 66 |
| Niobium (Nb), % | 0 to 0.35 | |
| 0 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |