ACI-ASTM CB7Cu-2 Steel vs. ASTM A372 Grade J Steel
Both ACI-ASTM CB7Cu-2 steel and ASTM A372 grade J steel are iron alloys. They have 78% of their average alloy composition in common. 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 ASTM A372 grade J steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 300 to 420 | |
| 200 to 310 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 5.7 to 11 | |
| 17 to 22 |
| Fatigue Strength, MPa | 420 to 590 | |
| 310 to 570 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 75 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 960 to 1350 | |
| 650 to 1020 |
| Tensile Strength: Yield (Proof), MPa | 760 to 1180 | |
| 430 to 850 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 250 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1460 |
| Melting Onset (Solidus), °C | 1380 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 17 | |
| 44 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.1 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.4 | |
| 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 2.4 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 1.5 |
| Embodied Energy, MJ/kg | 38 | |
| 20 |
| Embodied Water, L/kg | 130 | |
| 51 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 120 | |
| 130 to 170 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1510 to 3600 | |
| 500 to 1930 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 34 to 48 | |
| 23 to 36 |
| Strength to Weight: Bending, points | 28 to 35 | |
| 21 to 29 |
| Thermal Diffusivity, mm2/s | 4.6 | |
| 12 |
| Thermal Shock Resistance, points | 32 to 45 | |
| 19 to 30 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0.35 to 0.5 |
| Chromium (Cr), % | 14 to 15.5 | |
| 0.8 to 1.2 |
| Copper (Cu), % | 2.5 to 3.2 | |
| 0 |
| Iron (Fe), % | 73.6 to 79 | |
| 96.7 to 97.8 |
| Manganese (Mn), % | 0 to 0.7 | |
| 0.75 to 1.1 |
| Molybdenum (Mo), % | 0 | |
| 0.15 to 0.25 |
| Nickel (Ni), % | 4.5 to 5.5 | |
| 0 |
| Niobium (Nb), % | 0 to 0.35 | |
| 0 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 to 1.0 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.010 |