SAE-AISI 81B45 Steel vs. EN 1.3538 Steel
Both SAE-AISI 81B45 steel and EN 1.3538 steel are iron alloys. They have a very high 99% of their average alloy composition in common. There are 25 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 SAE-AISI 81B45 steel and the bottom bar is EN 1.3538 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 160 to 200 | |
200 to 220 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
190 |
Poisson's Ratio | 0.29 | |
0.29 |
Shear Modulus, GPa | 73 | |
73 |
Tensile Strength: Ultimate (UTS), MPa | 540 to 670 | |
670 to 740 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
250 |
Maximum Temperature: Mechanical, °C | 410 | |
440 |
Melting Completion (Liquidus), °C | 1460 | |
1450 |
Melting Onset (Solidus), °C | 1420 | |
1410 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 40 | |
41 |
Thermal Expansion, µm/m-K | 12 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
7.4 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
8.5 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 2.3 | |
3.0 |
Density, g/cm3 | 7.8 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 1.5 | |
1.6 |
Embodied Energy, MJ/kg | 20 | |
21 |
Embodied Water, L/kg | 49 | |
56 |
Common Calculations
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 19 to 24 | |
24 to 26 |
Strength to Weight: Bending, points | 19 to 22 | |
22 to 23 |
Thermal Diffusivity, mm2/s | 11 | |
11 |
Thermal Shock Resistance, points | 17 to 21 | |
20 to 22 |
Alloy Composition
Aluminum (Al), % | 0 | |
0 to 0.050 |
Boron (B), % | 0.00050 to 0.0030 | |
0 |
Carbon (C), % | 0.43 to 0.48 | |
0.93 to 1.1 |
Chromium (Cr), % | 0.35 to 0.55 | |
1.7 to 2.0 |
Copper (Cu), % | 0 | |
0 to 0.3 |
Iron (Fe), % | 97 to 98 | |
96 to 97.2 |
Manganese (Mn), % | 0.75 to 1.0 | |
0.6 to 0.8 |
Molybdenum (Mo), % | 0.080 to 0.15 | |
0.4 to 0.5 |
Nickel (Ni), % | 0.2 to 0.4 | |
0 |
Oxygen (O), % | 0 | |
0 to 0.0015 |
Phosphorus (P), % | 0 to 0.035 | |
0 to 0.025 |
Silicon (Si), % | 0.15 to 0.35 | |
0.15 to 0.35 |
Sulfur (S), % | 0 to 0.040 | |
0 to 0.030 |