AWS E320LR vs. Austempered Cast Iron
Both AWS E320LR and austempered cast iron are iron alloys. They have a modest 40% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is AWS E320LR and the bottom bar is austempered cast iron.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 180 |
| Elongation at Break, % | 34 | |
| 1.1 to 13 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 62 to 69 |
| Tensile Strength: Ultimate (UTS), MPa | 580 | |
| 860 to 1800 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 280 |
| Melting Completion (Liquidus), °C | 1410 | |
| 1380 |
| Melting Onset (Solidus), °C | 1360 | |
| 1340 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 490 |
| Thermal Expansion, µm/m-K | 14 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 2.9 |
| Density, g/cm3 | 8.2 | |
| 7.5 |
| Embodied Carbon, kg CO2/kg material | 6.2 | |
| 1.8 |
| Embodied Energy, MJ/kg | 87 | |
| 25 |
| Embodied Water, L/kg | 220 | |
| 48 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 20 | |
| 32 to 66 |
| Strength to Weight: Bending, points | 19 | |
| 27 to 44 |
| Thermal Shock Resistance, points | 15 | |
| 25 to 53 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.050 |
| Arsenic (As), % | 0 | |
| 0 to 0.020 |
| Carbon (C), % | 0 to 0.030 | |
| 3.4 to 3.8 |
| Chromium (Cr), % | 19 to 21 | |
| 0 to 0.1 |
| Copper (Cu), % | 3.0 to 4.0 | |
| 0 to 0.8 |
| Iron (Fe), % | 32.7 to 42.5 | |
| 89.6 to 94 |
| Magnesium (Mg), % | 0 | |
| 0 to 0.040 |
| Manganese (Mn), % | 1.5 to 2.5 | |
| 0.3 to 0.4 |
| Molybdenum (Mo), % | 2.0 to 3.0 | |
| 0 to 0.3 |
| Nickel (Ni), % | 32 to 36 | |
| 0 to 2.0 |
| Niobium (Nb), % | 0 to 0.4 | |
| 0 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 to 0.040 |
| Selenium (Se), % | 0 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.3 | |
| 2.3 to 2.7 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.020 |
| Tin (Sn), % | 0 | |
| 0 to 0.020 |
| Vanadium (V), % | 0 | |
| 0 to 0.1 |