ASTM A285 Carbon Steel vs. AISI 431 Stainless Steel
Both ASTM A285 carbon 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 A285 carbon steel and the bottom bar is AISI 431 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 110 to 130 | |
| 250 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 30 to 34 | |
| 15 to 17 |
| Fatigue Strength, MPa | 150 to 180 | |
| 430 to 610 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 77 |
| Shear Strength, MPa | 250 to 290 | |
| 550 to 840 |
| Tensile Strength: Ultimate (UTS), MPa | 380 to 450 | |
| 890 to 1380 |
| Tensile Strength: Yield (Proof), MPa | 190 to 230 | |
| 710 to 1040 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 850 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1510 |
| Melting Onset (Solidus), °C | 1420 to 1430 | |
| 1450 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 53 | |
| 26 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
| 2.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
| 3.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 9.0 |
| Density, g/cm3 | 7.9 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 2.2 |
| Embodied Energy, MJ/kg | 18 | |
| 31 |
| Embodied Water, L/kg | 46 | |
| 120 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 | |
| 140 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 94 to 150 | |
| 1270 to 2770 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 13 to 16 | |
| 32 to 50 |
| Strength to Weight: Bending, points | 15 to 17 | |
| 27 to 36 |
| Thermal Diffusivity, mm2/s | 14 | |
| 7.0 |
| Thermal Shock Resistance, points | 12 to 14 | |
| 28 to 43 |