EN 1.4020 Stainless Steel vs. ASTM A302 Alloy Steel
Both EN 1.4020 stainless steel and ASTM A302 alloy steel are iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is EN 1.4020 stainless steel and the bottom bar is ASTM A302 alloy steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 340 | |
| 180 to 190 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 13 to 34 | |
| 20 to 23 |
| Fatigue Strength, MPa | 340 to 540 | |
| 250 to 280 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 73 |
| Shear Strength, MPa | 510 to 680 | |
| 370 to 390 |
| Tensile Strength: Ultimate (UTS), MPa | 770 to 1130 | |
| 590 to 620 |
| Tensile Strength: Yield (Proof), MPa | 430 to 950 | |
| 350 to 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 890 | |
| 410 |
| Melting Completion (Liquidus), °C | 1390 | |
| 1460 |
| Melting Onset (Solidus), °C | 1350 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Expansion, µm/m-K | 17 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 11 | |
| 2.4 to 3.0 |
| Density, g/cm3 | 7.6 | |
| 7.8 to 7.9 |
| Embodied Carbon, kg CO2/kg material | 2.5 | |
| 1.5 to 1.6 |
| Embodied Energy, MJ/kg | 37 | |
| 20 to 21 |
| Embodied Water, L/kg | 150 | |
| 48 to 50 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 220 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 460 to 2290 | |
| 330 to 410 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 28 to 41 | |
| 21 to 22 |
| Strength to Weight: Bending, points | 25 to 32 | |
| 20 to 21 |
| Thermal Shock Resistance, points | 16 to 23 | |
| 17 to 18 |