ASTM B522 Class II vs. C72900 Copper-nickel
ASTM B522 class II belongs to the otherwise unclassified metals classification, while C72900 copper-nickel belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is ASTM B522 class II and the bottom bar is C72900 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 96 | |
| 120 |
| Elongation at Break, % | 1.1 to 28 | |
| 6.0 to 20 |
| Poisson's Ratio | 0.41 | |
| 0.34 |
| Shear Modulus, GPa | 34 | |
| 45 |
| Shear Strength, MPa | 180 to 280 | |
| 540 to 630 |
| Tensile Strength: Ultimate (UTS), MPa | 280 to 490 | |
| 870 to 1080 |
| Tensile Strength: Yield (Proof), MPa | 120 to 210 | |
| 700 to 920 |
Thermal Properties
| Latent Heat of Fusion, J/g | 77 | |
| 210 |
| Melting Completion (Liquidus), °C | 1030 | |
| 1120 |
| Melting Onset (Solidus), °C | 1030 | |
| 950 |
| Specific Heat Capacity, J/kg-K | 160 | |
| 380 |
| Thermal Expansion, µm/m-K | 15 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 7.8 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 5.7 | |
| 8.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 17 | |
| 8.8 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 4.4 to 63 | |
| 49 to 210 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 75 to 230 | |
| 2030 to 3490 |
| Stiffness to Weight: Axial, points | 3.1 | |
| 7.6 |
| Stiffness to Weight: Bending, points | 8.9 | |
| 19 |
| Strength to Weight: Axial, points | 4.4 to 7.8 | |
| 27 to 34 |
| Strength to Weight: Bending, points | 5.5 to 8.0 | |
| 23 to 27 |
| Thermal Shock Resistance, points | 13 to 24 | |
| 31 to 38 |
Alloy Composition
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| Copper (Cu), % | 0 | |
| 74.1 to 78 |
| Gold (Au), % | 68.5 to 69.5 | |
| 0 |
| Iron (Fe), % | 0 | |
| 0 to 0.5 |
| Lead (Pb), % | 0 | |
| 0 to 0.020 |
| Magnesium (Mg), % | 0 | |
| 0 to 0.15 |
| Manganese (Mn), % | 0 | |
| 0 to 0.3 |
| Nickel (Ni), % | 0 | |
| 14.5 to 15.5 |
| Niobium (Nb), % | 0 | |
| 0 to 0.1 |
| Platinum (Pt), % | 5.5 to 6.5 | |
| 0 |
| Silver (Ag), % | 24.5 to 25.5 | |
| 0 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 |
| Tin (Sn), % | 0 | |
| 7.5 to 8.5 |
| Zinc (Zn), % | 0 | |
| 0 to 0.5 |
| Residuals, % | 0 to 0.26 | |
| 0 to 0.3 |