EN 1.4903 Stainless Steel vs. EN 1.7386 Steel
Both EN 1.4903 stainless steel and EN 1.7386 steel are iron alloys. Their average alloy composition is basically identical. There are 32 material properties with values for both materials. Properties with values for just one material (2, 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 1.7386 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 to 21 | |
| 18 to 21 |
| Fatigue Strength, MPa | 320 to 330 | |
| 170 to 290 |
| Impact Strength: V-Notched Charpy, J | 42 to 46 | |
| 38 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 75 | |
| 75 |
| Shear Strength, MPa | 420 | |
| 340 to 410 |
| Tensile Strength: Ultimate (UTS), MPa | 670 to 680 | |
| 550 to 670 |
| Tensile Strength: Yield (Proof), MPa | 500 | |
| 240 to 440 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 650 | |
| 600 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1450 |
| Melting Onset (Solidus), °C | 1420 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 26 | |
| 26 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.4 | |
| 9.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 4.0 | |
| 10 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 6.5 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 2.0 |
| Embodied Energy, MJ/kg | 36 | |
| 28 |
| Embodied Water, L/kg | 88 | |
| 88 |
Common Calculations
| PREN (Pitting Resistance) | 13 | |
| 12 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 130 | |
| 92 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 650 | |
| 150 to 490 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 24 | |
| 20 to 24 |
| Strength to Weight: Bending, points | 22 | |
| 19 to 22 |
| Thermal Diffusivity, mm2/s | 7.0 | |
| 6.9 |
| Thermal Shock Resistance, points | 23 | |
| 15 to 18 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.040 | |
| 0 to 0.040 |
| Carbon (C), % | 0.080 to 0.12 | |
| 0.080 to 0.15 |
| Chromium (Cr), % | 8.0 to 9.5 | |
| 8.0 to 10 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 to 0.3 |
| Iron (Fe), % | 87.1 to 90.5 | |
| 86.8 to 90.5 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0.3 to 0.6 |
| Molybdenum (Mo), % | 0.85 to 1.1 | |
| 0.9 to 1.1 |
| Nickel (Ni), % | 0 to 0.4 | |
| 0 |
| Niobium (Nb), % | 0.060 to 0.1 | |
| 0 |
| Nitrogen (N), % | 0.030 to 0.070 | |
| 0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.5 | |
| 0.25 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.010 |
| Vanadium (V), % | 0.18 to 0.25 | |
| 0 |