EN 1.7218 Steel vs. EN 1.4903 Stainless Steel
Both EN 1.7218 steel and EN 1.4903 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is EN 1.7218 steel and the bottom bar is EN 1.4903 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 75 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 1550 | |
| 670 to 680 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 650 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 44 | |
| 26 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 3.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.5 | |
| 4.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.6 | |
| 7.0 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 2.6 |
| Embodied Energy, MJ/kg | 20 | |
| 36 |
| Embodied Water, L/kg | 52 | |
| 88 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 18 to 55 | |
| 24 |
| Strength to Weight: Bending, points | 18 to 38 | |
| 22 |
| Thermal Diffusivity, mm2/s | 12 | |
| 7.0 |
| Thermal Shock Resistance, points | 15 to 46 | |
| 23 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.040 | |
| 0 to 0.040 |
| Carbon (C), % | 0.22 to 0.29 | |
| 0.080 to 0.12 |
| Chromium (Cr), % | 0.9 to 1.2 | |
| 8.0 to 9.5 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 to 0.3 |
| Iron (Fe), % | 96.2 to 98.1 | |
| 87.1 to 90.5 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 0.3 to 0.6 |
| Molybdenum (Mo), % | 0.15 to 0.3 | |
| 0.85 to 1.1 |
| Nickel (Ni), % | 0 to 0.3 | |
| 0 to 0.4 |
| Niobium (Nb), % | 0 | |
| 0.060 to 0.1 |
| Nitrogen (N), % | 0 | |
| 0.030 to 0.070 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 to 0.015 |
| Vanadium (V), % | 0 | |
| 0.18 to 0.25 |