R30556 Alloy vs. Austempered Cast Iron
Both R30556 alloy and austempered cast iron are iron alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is R30556 alloy and the bottom bar is austempered cast iron.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 180 |
| Elongation at Break, % | 45 | |
| 1.1 to 13 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 81 | |
| 62 to 69 |
| Tensile Strength: Ultimate (UTS), MPa | 780 | |
| 860 to 1800 |
| Tensile Strength: Yield (Proof), MPa | 350 | |
| 560 to 1460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 280 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1380 |
| Melting Onset (Solidus), °C | 1330 | |
| 1340 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 490 |
| Thermal Conductivity, W/m-K | 11 | |
| 42 |
| Thermal Expansion, µm/m-K | 15 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 70 | |
| 2.9 |
| Density, g/cm3 | 8.4 | |
| 7.5 |
| Embodied Carbon, kg CO2/kg material | 8.7 | |
| 1.8 |
| Embodied Energy, MJ/kg | 130 | |
| 25 |
| Embodied Water, L/kg | 300 | |
| 48 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 290 | |
| 19 to 95 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 290 | |
| 880 to 3970 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 26 | |
| 32 to 66 |
| Strength to Weight: Bending, points | 22 | |
| 27 to 44 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 11 |
| Thermal Shock Resistance, points | 18 | |
| 25 to 53 |
Alloy Composition
| Aluminum (Al), % | 0.1 to 0.5 | |
| 0 to 0.050 |
| Arsenic (As), % | 0 | |
| 0 to 0.020 |
| Boron (B), % | 0 to 0.020 | |
| 0 |
| Carbon (C), % | 0.050 to 0.15 | |
| 3.4 to 3.8 |
| Chromium (Cr), % | 21 to 23 | |
| 0 to 0.1 |
| Cobalt (Co), % | 16 to 21 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.8 |
| Iron (Fe), % | 20.4 to 38.2 | |
| 89.6 to 94 |
| Lanthanum (La), % | 0.0050 to 0.1 | |
| 0 |
| Magnesium (Mg), % | 0 | |
| 0 to 0.040 |
| Manganese (Mn), % | 0.5 to 2.0 | |
| 0.3 to 0.4 |
| Molybdenum (Mo), % | 2.5 to 4.0 | |
| 0 to 0.3 |
| Nickel (Ni), % | 19 to 22.5 | |
| 0 to 2.0 |
| Niobium (Nb), % | 0 to 0.3 | |
| 0 |
| Nitrogen (N), % | 0.1 to 0.3 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Selenium (Se), % | 0 | |
| 0 to 0.030 |
| Silicon (Si), % | 0.2 to 0.8 | |
| 2.3 to 2.7 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.020 |
| Tantalum (Ta), % | 0.3 to 1.3 | |
| 0 |
| Tin (Sn), % | 0 | |
| 0 to 0.020 |
| Tungsten (W), % | 2.0 to 3.5 | |
| 0 |
| Vanadium (V), % | 0 | |
| 0 to 0.1 |
| Zinc (Zn), % | 0.0010 to 0.1 | |
| 0 |