ASTM B522 Class II vs. C95820 Bronze
ASTM B522 class II belongs to the otherwise unclassified metals classification, while C95820 bronze belongs to the copper alloys. There are 21 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is ASTM B522 class II and the bottom bar is C95820 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 96 | |
| 120 |
| Elongation at Break, % | 1.1 to 28 | |
| 15 |
| Poisson's Ratio | 0.41 | |
| 0.34 |
| Shear Modulus, GPa | 34 | |
| 44 |
| Tensile Strength: Ultimate (UTS), MPa | 280 to 490 | |
| 730 |
| Tensile Strength: Yield (Proof), MPa | 120 to 210 | |
| 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 77 | |
| 230 |
| Melting Completion (Liquidus), °C | 1030 | |
| 1080 |
| Melting Onset (Solidus), °C | 1030 | |
| 1020 |
| Specific Heat Capacity, J/kg-K | 160 | |
| 440 |
| Thermal Expansion, µm/m-K | 15 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 7.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 5.7 | |
| 8.2 |
Otherwise Unclassified Properties
| Density, g/cm3 | 17 | |
| 8.3 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 4.4 to 63 | |
| 86 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 75 to 230 | |
| 400 |
| Stiffness to Weight: Axial, points | 3.1 | |
| 8.0 |
| Stiffness to Weight: Bending, points | 8.9 | |
| 20 |
| Strength to Weight: Axial, points | 4.4 to 7.8 | |
| 24 |
| Strength to Weight: Bending, points | 5.5 to 8.0 | |
| 22 |
| Thermal Shock Resistance, points | 13 to 24 | |
| 25 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 9.0 to 10 |
| Copper (Cu), % | 0 | |
| 77.5 to 82.5 |
| Gold (Au), % | 68.5 to 69.5 | |
| 0 |
| Iron (Fe), % | 0 | |
| 4.0 to 5.0 |
| Lead (Pb), % | 0 | |
| 0 to 0.020 |
| Manganese (Mn), % | 0 | |
| 0 to 1.5 |
| Nickel (Ni), % | 0 | |
| 4.5 to 5.8 |
| Platinum (Pt), % | 5.5 to 6.5 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 0.1 |
| Silver (Ag), % | 24.5 to 25.5 | |
| 0 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 |
| Tin (Sn), % | 0 | |
| 0 to 0.020 |
| Zinc (Zn), % | 0 | |
| 0 to 0.2 |
| Residuals, % | 0 to 0.26 | |
| 0 to 0.8 |