ASTM A27 Cast Steel vs. Grade 23 Titanium
ASTM A27 cast steel belongs to the iron alloys classification, while grade 23 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is ASTM A27 cast steel and the bottom bar is grade 23 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 110 |
| Elongation at Break, % | 25 to 27 | |
| 6.7 to 11 |
| Fatigue Strength, MPa | 170 to 230 | |
| 470 to 500 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Reduction in Area, % | 34 to 40 | |
| 30 |
| Shear Modulus, GPa | 73 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 550 | |
| 930 to 940 |
| Tensile Strength: Yield (Proof), MPa | 230 to 310 | |
| 850 to 870 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 340 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1610 |
| Melting Onset (Solidus), °C | 1420 | |
| 1560 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 560 |
| Thermal Conductivity, W/m-K | 52 | |
| 7.1 |
| Thermal Expansion, µm/m-K | 12 | |
| 9.4 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.0 to 7.1 | |
| 1.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 | |
| 2.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 36 |
| Density, g/cm3 | 7.8 | |
| 4.4 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 38 |
| Embodied Energy, MJ/kg | 18 | |
| 610 |
| Embodied Water, L/kg | 45 to 46 | |
| 200 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 96 to 120 | |
| 61 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 260 | |
| 3430 to 3560 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 35 |
| Strength to Weight: Axial, points | 16 to 20 | |
| 58 to 59 |
| Strength to Weight: Bending, points | 17 to 19 | |
| 48 |
| Thermal Diffusivity, mm2/s | 14 | |
| 2.9 |
| Thermal Shock Resistance, points | 15 to 18 | |
| 67 to 68 |