ASTM A588 Steel vs. AISI 431 Stainless Steel
Both ASTM A588 steel and AISI 431 stainless steel are iron alloys. There are 31 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 ASTM A588 steel and the bottom bar is AISI 431 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 170 | |
| 250 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 22 | |
| 15 to 17 |
| Fatigue Strength, MPa | 270 | |
| 430 to 610 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 77 |
| Shear Strength, MPa | 350 | |
| 550 to 840 |
| Tensile Strength: Ultimate (UTS), MPa | 550 | |
| 890 to 1380 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 710 to 1040 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 to 260 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 850 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1510 |
| Melting Onset (Solidus), °C | 1410 to 1420 | |
| 1450 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 43 to 44 | |
| 26 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 2.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.5 | |
| 3.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 to 2.5 | |
| 9.0 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.5 to 1.6 | |
| 2.2 |
| Embodied Energy, MJ/kg | 20 to 22 | |
| 31 |
| Embodied Water, L/kg | 50 to 51 | |
| 120 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 | |
| 140 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 400 | |
| 1270 to 2770 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 20 | |
| 32 to 50 |
| Strength to Weight: Bending, points | 19 | |
| 27 to 36 |
| Thermal Diffusivity, mm2/s | 12 | |
| 7.0 |
| Thermal Shock Resistance, points | 16 | |
| 28 to 43 |