C21000 Brass vs. ASTM B477 Au-Ni-Ag
C21000 brass belongs to the copper alloys classification, while ASTM B477 Au-Ni-Ag belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is C21000 brass and the bottom bar is ASTM B477 Au-Ni-Ag.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 95 |
| Elongation at Break, % | 2.9 to 50 | |
| 5.5 to 11 |
| Poisson's Ratio | 0.34 | |
| 0.41 |
| Shear Modulus, GPa | 43 | |
| 34 |
| Shear Strength, MPa | 180 to 280 | |
| 190 to 320 |
| Tensile Strength: Ultimate (UTS), MPa | 240 to 450 | |
| 310 to 550 |
Thermal Properties
| Latent Heat of Fusion, J/g | 200 | |
| 80 |
| Melting Completion (Liquidus), °C | 1070 | |
| 1010 |
| Melting Onset (Solidus), °C | 1050 | |
| 930 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 160 |
| Thermal Expansion, µm/m-K | 18 | |
| 15 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 56 | |
| 14 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 57 | |
| 7.5 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.8 | |
| 17 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.2 | |
| 3.1 |
| Stiffness to Weight: Bending, points | 18 | |
| 8.9 |
| Strength to Weight: Axial, points | 7.4 to 14 | |
| 5.0 to 9.0 |
| Strength to Weight: Bending, points | 9.6 to 15 | |
| 6.0 to 8.8 |
| Thermal Shock Resistance, points | 8.1 to 15 | |
| 16 to 28 |
Alloy Composition
| Copper (Cu), % | 94 to 96 | |
| 0 |
| Gold (Au), % | 0 | |
| 74.2 to 75.8 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 2.6 to 3.4 |
| Silver (Ag), % | 0 | |
| 21.4 to 22.6 |
| Zinc (Zn), % | 3.7 to 6.0 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.3 |