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ASTM B477 Au-Ni-Ag vs. C61500 Bronze

ASTM B477 Au-Ni-Ag belongs to the otherwise unclassified metals classification, while C61500 bronze belongs to the copper alloys. There are 19 material properties with values for both materials. Properties with values for just one material (12, 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 B477 Au-Ni-Ag and the bottom bar is C61500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 95
110
Elongation at Break, % 5.5 to 11
3.0 to 55
Poisson's Ratio 0.41
0.34
Shear Modulus, GPa 34
42
Shear Strength, MPa 190 to 320
350 to 550
Tensile Strength: Ultimate (UTS), MPa 310 to 550
480 to 970

Thermal Properties

Latent Heat of Fusion, J/g 80
220
Melting Completion (Liquidus), °C 1010
1040
Melting Onset (Solidus), °C 930
1030
Specific Heat Capacity, J/kg-K 160
430
Thermal Expansion, µm/m-K 15
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
13
Electrical Conductivity: Equal Weight (Specific), % IACS 7.5
13

Otherwise Unclassified Properties

Density, g/cm3 17
8.4

Common Calculations

Stiffness to Weight: Axial, points 3.1
7.5
Stiffness to Weight: Bending, points 8.9
19
Strength to Weight: Axial, points 5.0 to 9.0
16 to 32
Strength to Weight: Bending, points 6.0 to 8.8
16 to 26
Thermal Shock Resistance, points 16 to 28
17 to 34

Alloy Composition

Aluminum (Al), % 0
7.7 to 8.3
Copper (Cu), % 0
89 to 90.5
Gold (Au), % 74.2 to 75.8
0
Lead (Pb), % 0
0 to 0.015
Nickel (Ni), % 2.6 to 3.4
1.8 to 2.2
Silver (Ag), % 21.4 to 22.6
0
Residuals, % 0
0 to 0.5