SAE-AISI 81B45 Steel vs. SAE-AISI 1086 Steel
Both SAE-AISI 81B45 steel and SAE-AISI 1086 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 81B45 steel and the bottom bar is SAE-AISI 1086 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 160 to 200 | |
220 to 260 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
190 |
Elongation at Break, % | 12 to 24 | |
11 |
Fatigue Strength, MPa | 250 to 350 | |
300 to 360 |
Poisson's Ratio | 0.29 | |
0.29 |
Shear Modulus, GPa | 73 | |
72 |
Shear Strength, MPa | 340 to 400 | |
450 to 520 |
Tensile Strength: Ultimate (UTS), MPa | 540 to 670 | |
760 to 870 |
Tensile Strength: Yield (Proof), MPa | 350 to 560 | |
480 to 580 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
240 |
Maximum Temperature: Mechanical, °C | 410 | |
400 |
Melting Completion (Liquidus), °C | 1460 | |
1460 |
Melting Onset (Solidus), °C | 1420 | |
1410 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 40 | |
50 |
Thermal Expansion, µm/m-K | 12 | |
11 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
7.0 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
8.1 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 2.3 | |
1.8 |
Density, g/cm3 | 7.8 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 1.5 | |
1.4 |
Embodied Energy, MJ/kg | 20 | |
19 |
Embodied Water, L/kg | 49 | |
45 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 77 to 110 | |
79 to 84 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 320 to 840 | |
610 to 890 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 19 to 24 | |
27 to 31 |
Strength to Weight: Bending, points | 19 to 22 | |
24 to 26 |
Thermal Diffusivity, mm2/s | 11 | |
14 |
Thermal Shock Resistance, points | 17 to 21 | |
26 to 30 |
Alloy Composition
Boron (B), % | 0.00050 to 0.0030 | |
0 |
Carbon (C), % | 0.43 to 0.48 | |
0.8 to 0.93 |
Chromium (Cr), % | 0.35 to 0.55 | |
0 |
Iron (Fe), % | 97 to 98 | |
98.5 to 98.9 |
Manganese (Mn), % | 0.75 to 1.0 | |
0.3 to 0.5 |
Molybdenum (Mo), % | 0.080 to 0.15 | |
0 |
Nickel (Ni), % | 0.2 to 0.4 | |
0 |
Phosphorus (P), % | 0 to 0.035 | |
0 to 0.040 |
Silicon (Si), % | 0.15 to 0.35 | |
0 |
Sulfur (S), % | 0 to 0.040 | |
0 to 0.050 |