AISI 431 Stainless Steel vs. AISI 301 Stainless Steel
Both AISI 431 stainless steel and AISI 301 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is AISI 431 stainless steel and the bottom bar is AISI 301 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 250 | |
| 190 to 440 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 15 to 17 | |
| 7.4 to 46 |
| Fatigue Strength, MPa | 430 to 610 | |
| 210 to 600 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 77 |
| Shear Strength, MPa | 550 to 840 | |
| 410 to 860 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1380 | |
| 590 to 1460 |
| Tensile Strength: Yield (Proof), MPa | 710 to 1040 | |
| 230 to 1080 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 400 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 850 | |
| 840 |
| Melting Completion (Liquidus), °C | 1510 | |
| 1420 |
| Melting Onset (Solidus), °C | 1450 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 26 | |
| 16 |
| Thermal Expansion, µm/m-K | 12 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.6 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.0 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.0 | |
| 13 |
| Density, g/cm3 | 7.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.2 | |
| 2.7 |
| Embodied Energy, MJ/kg | 31 | |
| 39 |
| Embodied Water, L/kg | 120 | |
| 130 |
Common Calculations
| PREN (Pitting Resistance) | 16 | |
| 18 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 180 | |
| 99 to 300 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1270 to 2770 | |
| 130 to 2970 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 32 to 50 | |
| 21 to 52 |
| Strength to Weight: Bending, points | 27 to 36 | |
| 20 to 37 |
| Thermal Diffusivity, mm2/s | 7.0 | |
| 4.2 |
| Thermal Shock Resistance, points | 28 to 43 | |
| 12 to 31 |
Alloy Composition
| Carbon (C), % | 0 to 0.2 | |
| 0 to 0.15 |
| Chromium (Cr), % | 15 to 17 | |
| 16 to 18 |
| Iron (Fe), % | 78.2 to 83.8 | |
| 70.7 to 78 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 2.0 |
| Nickel (Ni), % | 1.3 to 2.5 | |
| 6.0 to 8.0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |