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ASTM B477 Au-Ni-Ag vs. C82800 Copper

ASTM B477 Au-Ni-Ag belongs to the otherwise unclassified metals classification, while C82800 copper belongs to the copper alloys. There are 18 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is ASTM B477 Au-Ni-Ag and the bottom bar is C82800 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 95
120
Elongation at Break, % 5.5 to 11
1.0 to 20
Poisson's Ratio 0.41
0.33
Shear Modulus, GPa 34
46
Tensile Strength: Ultimate (UTS), MPa 310 to 550
670 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 80
240
Melting Completion (Liquidus), °C 1010
930
Melting Onset (Solidus), °C 930
890
Specific Heat Capacity, J/kg-K 160
390
Thermal Expansion, µm/m-K 15
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
18
Electrical Conductivity: Equal Weight (Specific), % IACS 7.5
19

Otherwise Unclassified Properties

Density, g/cm3 17
8.7

Common Calculations

Stiffness to Weight: Axial, points 3.1
7.8
Stiffness to Weight: Bending, points 8.9
19
Strength to Weight: Axial, points 5.0 to 9.0
21 to 36
Strength to Weight: Bending, points 6.0 to 8.8
20 to 28
Thermal Shock Resistance, points 16 to 28
23 to 39

Alloy Composition

Aluminum (Al), % 0
0 to 0.15
Beryllium (Be), % 0
2.5 to 2.9
Chromium (Cr), % 0
0 to 0.1
Cobalt (Co), % 0
0.15 to 0.7
Copper (Cu), % 0
94.6 to 97.2
Gold (Au), % 74.2 to 75.8
0
Iron (Fe), % 0
0 to 0.25
Lead (Pb), % 0
0 to 0.020
Nickel (Ni), % 2.6 to 3.4
0 to 0.2
Silicon (Si), % 0
0.2 to 0.35
Silver (Ag), % 21.4 to 22.6
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.12
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.5