EN 1.4421 Stainless Steel vs. R05255 Alloy
EN 1.4421 stainless steel belongs to the iron alloys classification, while R05255 alloy belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is EN 1.4421 stainless steel and the bottom bar is R05255 alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 11 to 17 | |
| 20 |
| Poisson's Ratio | 0.28 | |
| 0.34 |
| Shear Modulus, GPa | 77 | |
| 70 |
| Tensile Strength: Ultimate (UTS), MPa | 880 to 1100 | |
| 540 |
| Tensile Strength: Yield (Proof), MPa | 620 to 950 | |
| 450 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 140 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 140 |
| Thermal Conductivity, W/m-K | 16 | |
| 59 |
| Thermal Expansion, µm/m-K | 10 | |
| 6.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 | |
| 17 |
| Embodied Water, L/kg | 130 | |
| 630 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 140 | |
| 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 960 to 2270 | |
| 530 |
| Stiffness to Weight: Axial, points | 14 | |
| 6.3 |
| Stiffness to Weight: Bending, points | 25 | |
| 11 |
| Strength to Weight: Axial, points | 31 to 39 | |
| 9.1 |
| Strength to Weight: Bending, points | 26 to 30 | |
| 8.9 |
| Thermal Diffusivity, mm2/s | 4.4 | |
| 25 |
| Thermal Shock Resistance, points | 31 to 39 | |
| 31 |
Alloy Composition
| Carbon (C), % | 0 to 0.060 | |
| 0 to 0.010 |
| Chromium (Cr), % | 15.5 to 17.5 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 74.4 to 80.5 | |
| 0 to 0.010 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 |
| Molybdenum (Mo), % | 0 to 0.7 | |
| 0 to 0.020 |
| Nickel (Ni), % | 4.0 to 5.5 | |
| 0 to 0.010 |
| Niobium (Nb), % | 0 | |
| 0 to 0.5 |
| Nitrogen (N), % | 0 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 | |
| 0 to 0.015 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 |
| Silicon (Si), % | 0 to 0.8 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 |
| Tantalum (Ta), % | 0 | |
| 95.9 to 98 |
| Titanium (Ti), % | 0 | |
| 0 to 0.010 |
| Tungsten (W), % | 0 | |
| 2.0 to 3.5 |