R05240 Alloy vs. EN 1.7221 Steel
R05240 alloy belongs to the otherwise unclassified metals classification, while EN 1.7221 steel belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is R05240 alloy and the bottom bar is EN 1.7221 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 150 | |
| 190 |
| Elongation at Break, % | 25 | |
| 11 to 17 |
| Poisson's Ratio | 0.36 | |
| 0.29 |
| Shear Modulus, GPa | 57 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 270 | |
| 650 to 780 |
| Tensile Strength: Yield (Proof), MPa | 170 | |
| 430 to 630 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 250 |
| Specific Heat Capacity, J/kg-K | 190 | |
| 470 |
| Thermal Expansion, µm/m-K | 6.8 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 14 | |
| 7.8 |
| Embodied Water, L/kg | 460 | |
| 51 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 59 | |
| 83 to 98 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 90 | |
| 490 to 1050 |
| Stiffness to Weight: Axial, points | 6.3 | |
| 13 |
| Stiffness to Weight: Bending, points | 13 | |
| 24 |
| Strength to Weight: Axial, points | 5.4 | |
| 23 to 27 |
| Strength to Weight: Bending, points | 6.8 | |
| 21 to 24 |
| Thermal Shock Resistance, points | 18 | |
| 19 to 23 |
Alloy Composition
| Carbon (C), % | 0 to 0.010 | |
| 0.22 to 0.29 |
| Chromium (Cr), % | 0 | |
| 0.8 to 1.2 |
| Hydrogen (H), % | 0 to 0.0015 | |
| 0 |
| Iron (Fe), % | 0 to 0.010 | |
| 96.8 to 98.3 |
| Manganese (Mn), % | 0 | |
| 0.5 to 0.8 |
| Molybdenum (Mo), % | 0 to 0.020 | |
| 0.15 to 0.3 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0 |
| Niobium (Nb), % | 35 to 42 | |
| 0 |
| Nitrogen (N), % | 0 to 0.010 | |
| 0 |
| Oxygen (O), % | 0 to 0.020 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.0050 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Tantalum (Ta), % | 57.9 to 65 | |
| 0 |
| Titanium (Ti), % | 0 to 0.010 | |
| 0 |
| Tungsten (W), % | 0 to 0.050 | |
| 0 |