S45500 Stainless Steel vs. AISI 321 Stainless Steel
Both S45500 stainless steel and AISI 321 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is S45500 stainless steel and the bottom bar is AISI 321 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 280 to 500 | |
| 170 to 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 3.4 to 11 | |
| 34 to 50 |
| Fatigue Strength, MPa | 570 to 890 | |
| 220 to 270 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 75 | |
| 77 |
| Shear Strength, MPa | 790 to 1090 | |
| 420 to 460 |
| Tensile Strength: Ultimate (UTS), MPa | 1370 to 1850 | |
| 590 to 690 |
| Tensile Strength: Yield (Proof), MPa | 1240 to 1700 | |
| 220 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 290 |
| Maximum Temperature: Corrosion, °C | 620 | |
| 480 |
| Maximum Temperature: Mechanical, °C | 760 | |
| 870 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1430 |
| Melting Onset (Solidus), °C | 1400 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Expansion, µm/m-K | 11 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 17 | |
| 16 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 3.8 | |
| 3.2 |
| Embodied Energy, MJ/kg | 57 | |
| 45 |
| Embodied Water, L/kg | 120 | |
| 140 |
Common Calculations
| PREN (Pitting Resistance) | 13 | |
| 19 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 45 to 190 | |
| 190 to 230 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 48 to 65 | |
| 21 to 25 |
| Strength to Weight: Bending, points | 35 to 42 | |
| 20 to 22 |
| Thermal Shock Resistance, points | 48 to 64 | |
| 13 to 15 |
Alloy Composition
| Carbon (C), % | 0 to 0.050 | |
| 0 to 0.080 |
| Chromium (Cr), % | 11 to 12.5 | |
| 17 to 19 |
| Copper (Cu), % | 1.5 to 2.5 | |
| 0 |
| Iron (Fe), % | 71.5 to 79.2 | |
| 65.3 to 74 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 |
| Nickel (Ni), % | 7.5 to 9.5 | |
| 9.0 to 12 |
| Niobium (Nb), % | 0 to 0.5 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Tantalum (Ta), % | 0 to 0.5 | |
| 0 |
| Titanium (Ti), % | 0.8 to 1.4 | |
| 0 to 0.7 |