EN 1.4313 Stainless Steel vs. EN 1.4903 Stainless Steel
Both EN 1.4313 stainless steel and EN 1.4903 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.4313 stainless steel and the bottom bar is EN 1.4903 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 12 to 17 | |
| 20 to 21 |
| Fatigue Strength, MPa | 340 to 510 | |
| 320 to 330 |
| Impact Strength: V-Notched Charpy, J | 55 to 70 | |
| 42 to 46 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 75 |
| Shear Strength, MPa | 460 to 600 | |
| 420 |
| Tensile Strength: Ultimate (UTS), MPa | 750 to 1000 | |
| 670 to 680 |
| Tensile Strength: Yield (Proof), MPa | 580 to 910 | |
| 500 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 270 |
| Maximum Temperature: Corrosion, °C | 390 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 780 | |
| 650 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1460 |
| Melting Onset (Solidus), °C | 1400 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 25 | |
| 26 |
| Thermal Expansion, µm/m-K | 10 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 3.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 4.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 7.0 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.4 | |
| 2.6 |
| Embodied Energy, MJ/kg | 34 | |
| 36 |
| Embodied Water, L/kg | 110 | |
| 88 |
Common Calculations
| PREN (Pitting Resistance) | 15 | |
| 13 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 150 | |
| 120 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 870 to 2100 | |
| 650 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 27 to 36 | |
| 24 |
| Strength to Weight: Bending, points | 23 to 28 | |
| 22 |
| Thermal Diffusivity, mm2/s | 6.7 | |
| 7.0 |
| Thermal Shock Resistance, points | 27 to 36 | |
| 23 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.040 |
| Carbon (C), % | 0 to 0.050 | |
| 0.080 to 0.12 |
| Chromium (Cr), % | 12 to 14 | |
| 8.0 to 9.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 78.5 to 84.2 | |
| 87.1 to 90.5 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0.3 to 0.6 |
| Molybdenum (Mo), % | 0.3 to 0.7 | |
| 0.85 to 1.1 |
| Nickel (Ni), % | 3.5 to 4.5 | |
| 0 to 0.4 |
| Niobium (Nb), % | 0 | |
| 0.060 to 0.1 |
| Nitrogen (N), % | 0 to 0.020 | |
| 0.030 to 0.070 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.7 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |
| Vanadium (V), % | 0 | |
| 0.18 to 0.25 |