ASTM B522 Class II vs. C72700 Copper-nickel
ASTM B522 class II belongs to the otherwise unclassified metals classification, while C72700 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 C72700 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 96 | |
| 120 |
| Elongation at Break, % | 1.1 to 28 | |
| 4.0 to 36 |
| Poisson's Ratio | 0.41 | |
| 0.34 |
| Shear Modulus, GPa | 34 | |
| 44 |
| Shear Strength, MPa | 180 to 280 | |
| 310 to 620 |
| Tensile Strength: Ultimate (UTS), MPa | 280 to 490 | |
| 460 to 1070 |
| Tensile Strength: Yield (Proof), MPa | 120 to 210 | |
| 580 to 1060 |
Thermal Properties
| Latent Heat of Fusion, J/g | 77 | |
| 210 |
| Melting Completion (Liquidus), °C | 1030 | |
| 1100 |
| Melting Onset (Solidus), °C | 1030 | |
| 930 |
| Specific Heat Capacity, J/kg-K | 160 | |
| 380 |
| Thermal Expansion, µm/m-K | 15 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 11 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 5.7 | |
| 11 |
Otherwise Unclassified Properties
| Density, g/cm3 | 17 | |
| 8.8 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 4.4 to 63 | |
| 20 to 380 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 75 to 230 | |
| 1420 to 4770 |
| Stiffness to Weight: Axial, points | 3.1 | |
| 7.4 |
| Stiffness to Weight: Bending, points | 8.9 | |
| 19 |
| Strength to Weight: Axial, points | 4.4 to 7.8 | |
| 14 to 34 |
| Strength to Weight: Bending, points | 5.5 to 8.0 | |
| 15 to 26 |
| Thermal Shock Resistance, points | 13 to 24 | |
| 16 to 38 |
Alloy Composition
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| Copper (Cu), % | 0 | |
| 82.1 to 86 |
| 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 | |
| 0.050 to 0.3 |
| Nickel (Ni), % | 0 | |
| 8.5 to 9.5 |
| 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 | |
| 5.5 to 6.5 |
| Zinc (Zn), % | 0 | |
| 0 to 0.5 |
| Residuals, % | 0 to 0.26 | |
| 0 to 0.3 |