AISI 205 Stainless Steel vs. SAE-AISI 81B45 Steel
Both AISI 205 stainless steel and SAE-AISI 81B45 steel are iron alloys. They have 67% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is AISI 205 stainless steel and the bottom bar is SAE-AISI 81B45 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 to 440 | |
| 160 to 200 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 11 to 51 | |
| 12 to 24 |
| Fatigue Strength, MPa | 410 to 640 | |
| 250 to 350 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 73 |
| Shear Strength, MPa | 560 to 850 | |
| 340 to 400 |
| Tensile Strength: Ultimate (UTS), MPa | 800 to 1430 | |
| 540 to 670 |
| Tensile Strength: Yield (Proof), MPa | 450 to 1100 | |
| 350 to 560 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 880 | |
| 410 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1460 |
| Melting Onset (Solidus), °C | 1340 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Expansion, µm/m-K | 18 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 11 | |
| 2.3 |
| Density, g/cm3 | 7.6 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 1.5 |
| Embodied Energy, MJ/kg | 37 | |
| 20 |
| Embodied Water, L/kg | 150 | |
| 49 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 150 to 430 | |
| 77 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 510 to 3060 | |
| 320 to 840 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 26 | |
| 24 |
| Strength to Weight: Axial, points | 29 to 52 | |
| 19 to 24 |
| Strength to Weight: Bending, points | 25 to 37 | |
| 19 to 22 |
| Thermal Shock Resistance, points | 16 to 29 | |
| 17 to 21 |
Alloy Composition
| Boron (B), % | 0 | |
| 0.00050 to 0.0030 |
| Carbon (C), % | 0.12 to 0.25 | |
| 0.43 to 0.48 |
| Chromium (Cr), % | 16.5 to 18.5 | |
| 0.35 to 0.55 |
| Iron (Fe), % | 62.6 to 68.1 | |
| 97 to 98 |
| Manganese (Mn), % | 14 to 15.5 | |
| 0.75 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0.080 to 0.15 |
| Nickel (Ni), % | 1.0 to 1.7 | |
| 0.2 to 0.4 |
| Nitrogen (N), % | 0.32 to 0.4 | |
| 0 |
| Phosphorus (P), % | 0 to 0.060 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 1.0 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.040 |