EN 1.4903 Stainless Steel vs. EN 1.6958 Steel
Both EN 1.4903 stainless steel and EN 1.6958 steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is EN 1.4903 stainless steel and the bottom bar is EN 1.6958 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 to 21 | |
| 16 |
| Fatigue Strength, MPa | 320 to 330 | |
| 700 |
| Impact Strength: V-Notched Charpy, J | 42 to 46 | |
| 63 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 75 | |
| 73 |
| Shear Strength, MPa | 420 | |
| 700 |
| Tensile Strength: Ultimate (UTS), MPa | 670 to 680 | |
| 1140 |
| Tensile Strength: Yield (Proof), MPa | 500 | |
| 1070 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 650 | |
| 450 |
| 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 | 26 | |
| 47 |
| Thermal Expansion, µm/m-K | 11 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.4 | |
| 7.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 4.0 | |
| 9.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 5.0 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 2.0 |
| Embodied Energy, MJ/kg | 36 | |
| 27 |
| Embodied Water, L/kg | 88 | |
| 60 |
Common Calculations
| PREN (Pitting Resistance) | 13 | |
| 2.9 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 130 | |
| 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 650 | |
| 3050 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 24 | |
| 40 |
| Strength to Weight: Bending, points | 22 | |
| 31 |
| Thermal Diffusivity, mm2/s | 7.0 | |
| 13 |
| Thermal Shock Resistance, points | 23 | |
| 39 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.040 | |
| 0.0050 to 0.050 |
| Carbon (C), % | 0.080 to 0.12 | |
| 0.25 to 0.3 |
| Chromium (Cr), % | 8.0 to 9.5 | |
| 1.2 to 1.7 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 |
| Iron (Fe), % | 87.1 to 90.5 | |
| 92.6 to 94.5 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0.2 to 0.5 |
| Molybdenum (Mo), % | 0.85 to 1.1 | |
| 0.35 to 0.55 |
| Nickel (Ni), % | 0 to 0.4 | |
| 3.3 to 3.8 |
| Niobium (Nb), % | 0.060 to 0.1 | |
| 0 |
| Nitrogen (N), % | 0.030 to 0.070 | |
| 0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 to 0.5 | |
| 0.15 to 0.3 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |
| Vanadium (V), % | 0.18 to 0.25 | |
| 0 to 0.12 |