S45503 Stainless Steel vs. SAE-AISI 81B45 Steel
Both S45503 stainless steel and SAE-AISI 81B45 steel are iron alloys. They have 77% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is S45503 stainless steel and the bottom bar is SAE-AISI 81B45 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 410 to 500 | |
| 160 to 200 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 4.6 to 6.8 | |
| 12 to 24 |
| Fatigue Strength, MPa | 710 to 800 | |
| 250 to 350 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 75 | |
| 73 |
| Shear Strength, MPa | 940 to 1070 | |
| 340 to 400 |
| Tensile Strength: Ultimate (UTS), MPa | 1610 to 1850 | |
| 540 to 670 |
| Tensile Strength: Yield (Proof), MPa | 1430 to 1700 | |
| 350 to 560 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 760 | |
| 410 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1460 |
| Melting Onset (Solidus), °C | 1400 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Expansion, µm/m-K | 11 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 15 | |
| 2.3 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 3.4 | |
| 1.5 |
| Embodied Energy, MJ/kg | 48 | |
| 20 |
| Embodied Water, L/kg | 120 | |
| 49 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 82 to 110 | |
| 77 to 110 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 57 to 65 | |
| 19 to 24 |
| Strength to Weight: Bending, points | 39 to 43 | |
| 19 to 22 |
| Thermal Shock Resistance, points | 56 to 64 | |
| 17 to 21 |
Alloy Composition
| Boron (B), % | 0 | |
| 0.00050 to 0.0030 |
| Carbon (C), % | 0 to 0.010 | |
| 0.43 to 0.48 |
| Chromium (Cr), % | 11 to 12.5 | |
| 0.35 to 0.55 |
| Copper (Cu), % | 1.5 to 2.5 | |
| 0 |
| Iron (Fe), % | 72.4 to 78.9 | |
| 97 to 98 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0.75 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0.080 to 0.15 |
| Nickel (Ni), % | 7.5 to 9.5 | |
| 0.2 to 0.4 |
| Niobium (Nb), % | 0.1 to 0.5 | |
| 0 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.2 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.040 |
| Titanium (Ti), % | 1.0 to 1.4 | |
| 0 |