EN 1.4938 Stainless Steel vs. ASTM A302 Alloy Steel
Both EN 1.4938 stainless steel and ASTM A302 alloy steel are iron alloys. 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 ASTM A302 alloy steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 16 to 17 | |
| 20 to 23 |
| Fatigue Strength, MPa | 390 to 520 | |
| 250 to 280 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 76 | |
| 73 |
| Shear Strength, MPa | 540 to 630 | |
| 370 to 390 |
| Tensile Strength: Ultimate (UTS), MPa | 870 to 1030 | |
| 590 to 620 |
| Tensile Strength: Yield (Proof), MPa | 640 to 870 | |
| 350 to 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 750 | |
| 410 |
| 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 | |
| 39 to 51 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 7.2 to 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 8.2 to 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 2.4 to 3.0 |
| Density, g/cm3 | 7.8 | |
| 7.8 to 7.9 |
| Embodied Carbon, kg CO2/kg material | 3.3 | |
| 1.5 to 1.6 |
| Embodied Energy, MJ/kg | 47 | |
| 20 to 21 |
| Embodied Water, L/kg | 110 | |
| 48 to 50 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 160 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1050 to 1920 | |
| 330 to 410 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 31 to 37 | |
| 21 to 22 |
| Strength to Weight: Bending, points | 26 to 29 | |
| 20 to 21 |
| Thermal Diffusivity, mm2/s | 8.1 | |
| 10 to 14 |
| Thermal Shock Resistance, points | 30 to 35 | |
| 17 to 18 |