EN 1.4401 Stainless Steel vs. EN 1.7703 Steel
Both EN 1.4401 stainless steel and EN 1.7703 steel are iron alloys. They have 71% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is EN 1.4401 stainless steel and the bottom bar is EN 1.7703 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 270 | |
| 200 to 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 14 to 40 | |
| 20 |
| Fatigue Strength, MPa | 200 to 320 | |
| 320 to 340 |
| Impact Strength: V-Notched Charpy, J | 91 to 94 | |
| 46 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 78 | |
| 74 |
| Shear Strength, MPa | 410 to 550 | |
| 420 to 430 |
| Tensile Strength: Ultimate (UTS), MPa | 600 to 900 | |
| 670 to 690 |
| Tensile Strength: Yield (Proof), MPa | 230 to 570 | |
| 460 to 500 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 950 | |
| 460 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1470 |
| Melting Onset (Solidus), °C | 1400 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 39 |
| Thermal Expansion, µm/m-K | 16 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.3 | |
| 7.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.6 | |
| 8.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 19 | |
| 4.2 |
| Density, g/cm3 | 7.9 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 3.8 | |
| 2.5 |
| Embodied Energy, MJ/kg | 52 | |
| 35 |
| Embodied Water, L/kg | 150 | |
| 61 |
Common Calculations
| PREN (Pitting Resistance) | 26 | |
| 5.6 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 190 | |
| 120 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 to 800 | |
| 570 to 650 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 21 to 32 | |
| 24 |
| Strength to Weight: Bending, points | 20 to 26 | |
| 22 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 11 |
| Thermal Shock Resistance, points | 13 to 20 | |
| 19 to 20 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0.11 to 0.15 |
| Chromium (Cr), % | 16.5 to 18.5 | |
| 2.0 to 2.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.2 |
| Iron (Fe), % | 62.8 to 71.5 | |
| 94.6 to 96.4 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0.3 to 0.6 |
| Molybdenum (Mo), % | 2.0 to 2.5 | |
| 0.9 to 1.1 |
| Nickel (Ni), % | 10 to 13 | |
| 0 to 0.25 |
| Niobium (Nb), % | 0 | |
| 0 to 0.070 |
| Nitrogen (N), % | 0 to 0.1 | |
| 0 to 0.012 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.0050 |
| Titanium (Ti), % | 0 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 | |
| 0.25 to 0.35 |