ASTM B817 Type II vs. ASTM A148 Cast Steel
ASTM B817 type II belongs to the titanium alloys classification, while ASTM A148 cast steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is ASTM B817 type II and the bottom bar is ASTM A148 cast steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 190 |
| Elongation at Break, % | 3.0 to 13 | |
| 5.7 to 25 |
| Fatigue Strength, MPa | 390 to 530 | |
| 280 to 670 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Reduction in Area, % | 4.0 to 13 | |
| 13 to 45 |
| Shear Modulus, GPa | 40 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 900 to 960 | |
| 630 to 1300 |
| Tensile Strength: Yield (Proof), MPa | 780 to 900 | |
| 390 to 1160 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 350 | |
| 400 to 430 |
| Melting Completion (Liquidus), °C | 1580 | |
| 1460 |
| Melting Onset (Solidus), °C | 1530 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 550 | |
| 470 |
| Thermal Expansion, µm/m-K | 9.9 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 37 | |
| 2.3 to 3.3 |
| Density, g/cm3 | 4.6 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 40 | |
| 1.5 to 1.7 |
| Embodied Energy, MJ/kg | 650 | |
| 20 to 22 |
| Embodied Water, L/kg | 220 | |
| 48 to 53 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 26 to 120 | |
| 71 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2890 to 3890 | |
| 400 to 3570 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 34 | |
| 24 |
| Strength to Weight: Axial, points | 55 to 58 | |
| 22 to 46 |
| Strength to Weight: Bending, points | 45 to 47 | |
| 21 to 34 |
| Thermal Shock Resistance, points | 62 to 66 | |
| 18 to 38 |