EN 1.4938 Stainless Steel vs. SAE-AISI 4028 Steel
Both EN 1.4938 stainless steel and SAE-AISI 4028 steel are iron alloys. They have 84% of their average alloy composition in common. There are 30 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 1.4938 stainless steel and the bottom bar is SAE-AISI 4028 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 16 to 17 | |
| 14 to 23 |
| Fatigue Strength, MPa | 390 to 520 | |
| 180 to 330 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 76 | |
| 73 |
| Shear Strength, MPa | 540 to 630 | |
| 310 to 380 |
| Tensile Strength: Ultimate (UTS), MPa | 870 to 1030 | |
| 490 to 630 |
| Tensile Strength: Yield (Proof), MPa | 640 to 870 | |
| 260 to 520 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 750 | |
| 400 |
| 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 | 30 | |
| 49 |
| Thermal Expansion, µm/m-K | 11 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 7.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 2.1 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 3.3 | |
| 1.5 |
| Embodied Energy, MJ/kg | 47 | |
| 19 |
| Embodied Water, L/kg | 110 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 160 | |
| 81 to 95 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1050 to 1920 | |
| 180 to 720 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 31 to 37 | |
| 17 to 22 |
| Strength to Weight: Bending, points | 26 to 29 | |
| 18 to 21 |
| Thermal Diffusivity, mm2/s | 8.1 | |
| 13 |
| Thermal Shock Resistance, points | 30 to 35 | |
| 16 to 20 |
Alloy Composition
| Carbon (C), % | 0.080 to 0.15 | |
| 0.25 to 0.3 |
| Chromium (Cr), % | 11 to 12.5 | |
| 0 |
| Iron (Fe), % | 80.5 to 84.8 | |
| 98.1 to 98.7 |
| Manganese (Mn), % | 0.4 to 0.9 | |
| 0.7 to 0.9 |
| Molybdenum (Mo), % | 1.5 to 2.0 | |
| 0.2 to 0.3 |
| Nickel (Ni), % | 2.0 to 3.0 | |
| 0 |
| Nitrogen (N), % | 0.020 to 0.040 | |
| 0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.5 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.015 | |
| 0.035 to 0.050 |
| Vanadium (V), % | 0.25 to 0.4 | |
| 0 |