SAE-AISI 81B45 Steel vs. C63200 Bronze
SAE-AISI 81B45 steel belongs to the iron alloys classification, while C63200 bronze belongs to the copper alloys. There are 29 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 SAE-AISI 81B45 steel and the bottom bar is C63200 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 120 |
| Elongation at Break, % | 12 to 24 | |
| 17 to 18 |
| Poisson's Ratio | 0.29 | |
| 0.34 |
| Shear Modulus, GPa | 73 | |
| 44 |
| Shear Strength, MPa | 340 to 400 | |
| 390 to 440 |
| Tensile Strength: Ultimate (UTS), MPa | 540 to 670 | |
| 640 to 710 |
| Tensile Strength: Yield (Proof), MPa | 350 to 560 | |
| 310 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 230 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 230 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1060 |
| Melting Onset (Solidus), °C | 1420 | |
| 1040 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 440 |
| Thermal Conductivity, W/m-K | 40 | |
| 35 |
| Thermal Expansion, µm/m-K | 12 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 7.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 | |
| 29 |
| Density, g/cm3 | 7.8 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 3.4 |
| Embodied Energy, MJ/kg | 20 | |
| 55 |
| Embodied Water, L/kg | 49 | |
| 380 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 77 to 110 | |
| 95 to 99 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 320 to 840 | |
| 400 to 510 |
| Stiffness to Weight: Axial, points | 13 | |
| 7.9 |
| Stiffness to Weight: Bending, points | 24 | |
| 20 |
| Strength to Weight: Axial, points | 19 to 24 | |
| 21 to 24 |
| Strength to Weight: Bending, points | 19 to 22 | |
| 20 to 21 |
| Thermal Diffusivity, mm2/s | 11 | |
| 9.6 |
| Thermal Shock Resistance, points | 17 to 21 | |
| 22 to 24 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 8.7 to 9.5 |
| Boron (B), % | 0.00050 to 0.0030 | |
| 0 |
| Carbon (C), % | 0.43 to 0.48 | |
| 0 |
| Chromium (Cr), % | 0.35 to 0.55 | |
| 0 |
| Copper (Cu), % | 0 | |
| 78.8 to 82.6 |
| Iron (Fe), % | 97 to 98 | |
| 3.5 to 4.3 |
| Lead (Pb), % | 0 | |
| 0 to 0.020 |
| Manganese (Mn), % | 0.75 to 1.0 | |
| 1.2 to 2.0 |
| Molybdenum (Mo), % | 0.080 to 0.15 | |
| 0 |
| Nickel (Ni), % | 0.2 to 0.4 | |
| 4.0 to 4.8 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.5 |