N08020 Stainless Steel vs. SAE-AISI 81B45 Steel
Both N08020 stainless steel and SAE-AISI 81B45 steel are iron alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is N08020 stainless steel and the bottom bar is SAE-AISI 81B45 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 15 to 34 | |
| 12 to 24 |
| Fatigue Strength, MPa | 210 to 240 | |
| 250 to 350 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 73 |
| Shear Strength, MPa | 380 to 410 | |
| 340 to 400 |
| Tensile Strength: Ultimate (UTS), MPa | 610 to 620 | |
| 540 to 670 |
| Tensile Strength: Yield (Proof), MPa | 270 to 420 | |
| 350 to 560 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 1100 | |
| 410 |
| Melting Completion (Liquidus), °C | 1410 | |
| 1460 |
| Melting Onset (Solidus), °C | 1360 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 470 |
| Thermal Conductivity, W/m-K | 12 | |
| 40 |
| Thermal Expansion, µm/m-K | 15 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.6 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.8 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 38 | |
| 2.3 |
| Density, g/cm3 | 8.2 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 6.6 | |
| 1.5 |
| Embodied Energy, MJ/kg | 92 | |
| 20 |
| Embodied Water, L/kg | 220 | |
| 49 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 83 to 170 | |
| 77 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 180 to 440 | |
| 320 to 840 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 21 | |
| 19 to 24 |
| Strength to Weight: Bending, points | 20 | |
| 19 to 22 |
| Thermal Diffusivity, mm2/s | 3.2 | |
| 11 |
| Thermal Shock Resistance, points | 15 | |
| 17 to 21 |
Alloy Composition
| Boron (B), % | 0 | |
| 0.00050 to 0.0030 |
| Carbon (C), % | 0 to 0.070 | |
| 0.43 to 0.48 |
| Chromium (Cr), % | 19 to 21 | |
| 0.35 to 0.55 |
| Copper (Cu), % | 3.0 to 4.0 | |
| 0 |
| Iron (Fe), % | 29.9 to 44 | |
| 97 to 98 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0.75 to 1.0 |
| Molybdenum (Mo), % | 2.0 to 3.0 | |
| 0.080 to 0.15 |
| Nickel (Ni), % | 32 to 38 | |
| 0.2 to 0.4 |
| Niobium (Nb), % | 0 to 1.0 | |
| 0 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 1.0 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 to 0.040 |