ASTM B817 Type I vs. ASTM A209 Steel
ASTM B817 type I belongs to the titanium alloys classification, while ASTM A209 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is ASTM B817 type I and the bottom bar is ASTM A209 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 190 |
| Elongation at Break, % | 4.0 to 13 | |
| 34 |
| Fatigue Strength, MPa | 360 to 520 | |
| 180 to 200 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Shear Modulus, GPa | 40 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 770 to 960 | |
| 420 to 460 |
| Tensile Strength: Yield (Proof), MPa | 700 to 860 | |
| 220 to 250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 340 | |
| 410 |
| Melting Completion (Liquidus), °C | 1600 | |
| 1470 |
| Melting Onset (Solidus), °C | 1550 | |
| 1420 to 1430 |
| Specific Heat Capacity, J/kg-K | 560 | |
| 470 |
| Thermal Conductivity, W/m-K | 7.1 | |
| 50 |
| Thermal Expansion, µm/m-K | 9.6 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.0 | |
| 7.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.0 | |
| 8.1 to 8.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 2.4 |
| Density, g/cm3 | 4.4 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 38 | |
| 1.5 |
| Embodied Energy, MJ/kg | 610 | |
| 20 |
| Embodied Water, L/kg | 200 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 30 to 120 | |
| 120 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2310 to 3540 | |
| 130 to 170 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 24 |
| Strength to Weight: Axial, points | 48 to 60 | |
| 15 to 16 |
| Strength to Weight: Bending, points | 42 to 49 | |
| 16 to 17 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 13 |
| Thermal Shock Resistance, points | 54 to 68 | |
| 12 to 14 |