SAE-AISI 81B45 Steel vs. EN 1.5414 Steel
Both SAE-AISI 81B45 steel and EN 1.5414 steel are iron alloys. Their average alloy composition is basically identical. 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 EN 1.5414 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 to 200 | |
| 170 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 12 to 24 | |
| 22 |
| Fatigue Strength, MPa | 250 to 350 | |
| 250 to 270 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 340 to 400 | |
| 350 to 370 |
| Tensile Strength: Ultimate (UTS), MPa | 540 to 670 | |
| 550 to 580 |
| Tensile Strength: Yield (Proof), MPa | 350 to 560 | |
| 350 to 380 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 410 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1470 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 40 | |
| 44 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 | |
| 2.6 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.6 |
| Embodied Energy, MJ/kg | 20 | |
| 21 |
| Embodied Water, L/kg | 49 | |
| 50 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 77 to 110 | |
| 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 320 to 840 | |
| 320 to 370 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 19 to 24 | |
| 19 to 20 |
| Strength to Weight: Bending, points | 19 to 22 | |
| 19 to 20 |
| Thermal Diffusivity, mm2/s | 11 | |
| 12 |
| Thermal Shock Resistance, points | 17 to 21 | |
| 16 to 17 |
Alloy Composition
| Boron (B), % | 0.00050 to 0.0030 | |
| 0 |
| Carbon (C), % | 0.43 to 0.48 | |
| 0 to 0.2 |
| Chromium (Cr), % | 0.35 to 0.55 | |
| 0 to 0.3 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 97 to 98 | |
| 96.4 to 98.7 |
| Manganese (Mn), % | 0.75 to 1.0 | |
| 0.9 to 1.5 |
| Molybdenum (Mo), % | 0.080 to 0.15 | |
| 0.45 to 0.6 |
| Nickel (Ni), % | 0.2 to 0.4 | |
| 0 to 0.3 |
| Nitrogen (N), % | 0 | |
| 0 to 0.012 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.015 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 0.4 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.0050 |