ACI-ASTM CB7Cu-2 Steel vs. Grade 20 Titanium
ACI-ASTM CB7Cu-2 steel belongs to the iron alloys classification, while grade 20 titanium belongs to the titanium alloys. There are 23 material properties with values for both materials. Properties with values for just one material (10, 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 grade 20 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 120 |
| Elongation at Break, % | 5.7 to 11 | |
| 5.7 to 17 |
| Fatigue Strength, MPa | 420 to 590 | |
| 550 to 630 |
| Poisson's Ratio | 0.28 | |
| 0.32 |
| Shear Modulus, GPa | 75 | |
| 47 |
| Tensile Strength: Ultimate (UTS), MPa | 960 to 1350 | |
| 900 to 1270 |
| Tensile Strength: Yield (Proof), MPa | 760 to 1180 | |
| 850 to 1190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 400 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1660 |
| Melting Onset (Solidus), °C | 1380 | |
| 1600 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 520 |
| Thermal Expansion, µm/m-K | 11 | |
| 9.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 | |
| 5.0 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 52 |
| Embodied Energy, MJ/kg | 38 | |
| 860 |
| Embodied Water, L/kg | 130 | |
| 350 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 120 | |
| 71 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1510 to 3600 | |
| 2940 to 5760 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 33 |
| Strength to Weight: Axial, points | 34 to 48 | |
| 50 to 70 |
| Strength to Weight: Bending, points | 28 to 35 | |
| 41 to 52 |
| Thermal Shock Resistance, points | 32 to 45 | |
| 55 to 77 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 3.0 to 4.0 |
| Carbon (C), % | 0 to 0.070 | |
| 0 to 0.050 |
| Chromium (Cr), % | 14 to 15.5 | |
| 5.5 to 6.5 |
| Copper (Cu), % | 2.5 to 3.2 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.020 |
| Iron (Fe), % | 73.6 to 79 | |
| 0 to 0.3 |
| Manganese (Mn), % | 0 to 0.7 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 3.5 to 4.5 |
| Nickel (Ni), % | 4.5 to 5.5 | |
| 0 |
| Niobium (Nb), % | 0 to 0.35 | |
| 0 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.12 |
| Palladium (Pd), % | 0 | |
| 0.040 to 0.080 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 71 to 77 |
| Vanadium (V), % | 0 | |
| 7.5 to 8.5 |
| Zirconium (Zr), % | 0 | |
| 3.5 to 4.5 |
| Residuals, % | 0 | |
| 0 to 0.4 |