S45000 Stainless Steel vs. AISI 422 Stainless Steel
Both S45000 stainless steel and AISI 422 stainless steel are iron alloys. They have 90% of their average alloy composition in common.
For each property being compared, the top bar is S45000 stainless steel and the bottom bar is AISI 422 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 280 to 410 | |
| 260 to 330 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 6.8 to 14 | |
| 15 to 17 |
| Fatigue Strength, MPa | 330 to 650 | |
| 410 to 500 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Reduction in Area, % | 22 to 50 | |
| 34 to 40 |
| Rockwell C Hardness | 28 to 44 | |
| 21 |
| Shear Modulus, GPa | 76 | |
| 76 |
| Shear Strength, MPa | 590 to 830 | |
| 560 to 660 |
| Tensile Strength: Ultimate (UTS), MPa | 980 to 1410 | |
| 910 to 1080 |
| Tensile Strength: Yield (Proof), MPa | 580 to 1310 | |
| 670 to 870 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 270 |
| Maximum Temperature: Corrosion, °C | 400 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 840 | |
| 650 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1480 |
| Melting Onset (Solidus), °C | 1390 | |
| 1470 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 17 | |
| 24 |
| Thermal Expansion, µm/m-K | 11 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 4.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 5.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 11 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 3.1 |
| Embodied Energy, MJ/kg | 39 | |
| 44 |
| Embodied Water, L/kg | 130 | |
| 100 |
Common Calculations
| PREN (Pitting Resistance) | 17 | |
| 17 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 94 to 160 | |
| 140 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 850 to 4400 | |
| 1140 to 1910 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 35 to 50 | |
| 32 to 38 |
| Strength to Weight: Bending, points | 28 to 36 | |
| 26 to 30 |
| Thermal Diffusivity, mm2/s | 4.5 | |
| 6.4 |
| Thermal Shock Resistance, points | 33 to 47 | |
| 33 to 39 |
Alloy Composition
| Carbon (C), % | 0 to 0.050 | |
| 0.2 to 0.25 |
| Chromium (Cr), % | 14 to 16 | |
| 11 to 12.5 |
| Copper (Cu), % | 1.3 to 1.8 | |
| 0 |
| Iron (Fe), % | 72.1 to 79.3 | |
| 81.9 to 85.8 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0.5 to 1.0 |
| Molybdenum (Mo), % | 0.5 to 1.0 | |
| 0.9 to 1.3 |
| Nickel (Ni), % | 5.0 to 7.0 | |
| 0.5 to 1.0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.025 |
| Tungsten (W), % | 0 | |
| 0.9 to 1.3 |
| Vanadium (V), % | 0 | |
| 0.2 to 0.3 |