AWS ERTi-7 vs. Ductile Cast Iron
AWS ERTi-7 belongs to the titanium alloys classification, while ductile cast iron belongs to the iron alloys. There are 27 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 AWS ERTi-7 and the bottom bar is ductile cast iron.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 170 to 180 |
| Elongation at Break, % | 20 | |
| 2.1 to 20 |
| Poisson's Ratio | 0.32 | |
| 0.28 to 0.31 |
| Shear Modulus, GPa | 40 | |
| 64 to 70 |
| Tensile Strength: Ultimate (UTS), MPa | 340 | |
| 460 to 920 |
| Tensile Strength: Yield (Proof), MPa | 280 | |
| 310 to 670 |
Thermal Properties
| Latent Heat of Fusion, J/g | 420 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 320 | |
| 290 |
| Melting Completion (Liquidus), °C | 1670 | |
| 1160 |
| Melting Onset (Solidus), °C | 1620 | |
| 1120 |
| Specific Heat Capacity, J/kg-K | 540 | |
| 490 |
| Thermal Conductivity, W/m-K | 21 | |
| 31 to 36 |
| Thermal Expansion, µm/m-K | 8.7 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.6 | |
| 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 7.3 | |
| 8.8 to 9.4 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.5 | |
| 7.1 to 7.5 |
| Embodied Carbon, kg CO2/kg material | 47 | |
| 1.5 |
| Embodied Energy, MJ/kg | 800 | |
| 21 |
| Embodied Water, L/kg | 470 | |
| 43 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 64 | |
| 17 to 80 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 360 | |
| 280 to 1330 |
| Stiffness to Weight: Axial, points | 13 | |
| 12 to 14 |
| Stiffness to Weight: Bending, points | 35 | |
| 24 to 26 |
| Strength to Weight: Axial, points | 21 | |
| 17 to 35 |
| Strength to Weight: Bending, points | 24 | |
| 18 to 29 |
| Thermal Diffusivity, mm2/s | 8.8 | |
| 8.9 to 10 |
| Thermal Shock Resistance, points | 26 | |
| 17 to 35 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 3.0 to 3.5 |
| Hydrogen (H), % | 0 to 0.0080 | |
| 0 |
| Iron (Fe), % | 0 to 0.12 | |
| 93.7 to 95.5 |
| Nitrogen (N), % | 0 to 0.015 | |
| 0 |
| Oxygen (O), % | 0.080 to 0.16 | |
| 0 |
| Palladium (Pd), % | 0.12 to 0.25 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.080 |
| Silicon (Si), % | 0 | |
| 1.5 to 2.8 |
| Titanium (Ti), % | 99.417 to 99.8 | |
| 0 |