ASTM B817 Type I vs. ASTM A216 Cast Steel
ASTM B817 type I belongs to the titanium alloys classification, while ASTM A216 cast steel belongs to the iron alloys.
For each property being compared, the top bar is ASTM B817 type I and the bottom bar is ASTM A216 cast steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 190 |
| Elongation at Break, % | 4.0 to 13 | |
| 25 to 27 |
| Fatigue Strength, MPa | 360 to 520 | |
| 170 to 230 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Reduction in Area, % | 5.0 to 29 | |
| 39 |
| Shear Modulus, GPa | 40 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 770 to 960 | |
| 500 to 570 |
| Tensile Strength: Yield (Proof), MPa | 700 to 860 | |
| 230 to 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 340 | |
| 400 |
| Melting Completion (Liquidus), °C | 1600 | |
| 1450 to 1460 |
| Melting Onset (Solidus), °C | 1550 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 560 | |
| 470 |
| Thermal Conductivity, W/m-K | 7.1 | |
| 49 to 52 |
| Thermal Expansion, µm/m-K | 9.6 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.0 | |
| 7.1 to 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.0 | |
| 8.2 to 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 1.8 |
| Density, g/cm3 | 4.4 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 38 | |
| 1.4 |
| Embodied Energy, MJ/kg | 610 | |
| 18 |
| Embodied Water, L/kg | 200 | |
| 45 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 30 to 120 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2310 to 3540 | |
| 140 to 250 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 24 |
| Strength to Weight: Axial, points | 48 to 60 | |
| 18 to 20 |
| Strength to Weight: Bending, points | 42 to 49 | |
| 18 to 20 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 13 to 14 |
| Thermal Shock Resistance, points | 54 to 68 | |
| 16 to 18 |