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ASTM B628 Ag-Cu vs. ASTM B541 Gold

Both ASTM B628 Ag-Cu and ASTM B541 gold are otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM B628 Ag-Cu and the bottom bar is ASTM B541 gold.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
110
Elongation at Break, % 1.1 to 17
6.0 to 14
Poisson's Ratio 0.36
0.4
Shear Modulus, GPa 31
38
Shear Strength, MPa 210 to 430
410 to 690
Tensile Strength: Ultimate (UTS), MPa 350 to 760
670 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 140
90
Melting Completion (Liquidus), °C 780
1110
Melting Onset (Solidus), °C 780
930
Specific Heat Capacity, J/kg-K 280
170
Thermal Expansion, µm/m-K 19
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 84
7.7 to 12
Electrical Conductivity: Equal Weight (Specific), % IACS 75
4.0 to 6.2

Otherwise Unclassified Properties

Density, g/cm3 10
17

Common Calculations

Stiffness to Weight: Axial, points 4.6
3.4
Stiffness to Weight: Bending, points 14
9.0
Strength to Weight: Axial, points 9.5 to 21
11 to 19
Strength to Weight: Bending, points 11 to 18
9.8 to 14
Thermal Shock Resistance, points 16 to 34
36 to 63

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Cadmium (Cd), % 0 to 0.050
0
Copper (Cu), % 26.6 to 29
13.5 to 15.5
Gold (Au), % 0
70.5 to 72.5
Iron (Fe), % 0 to 0.050
0
Lead (Pb), % 0 to 0.030
0
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.030
0
Platinum (Pt), % 0
8.0 to 9.0
Silver (Ag), % 71 to 73
4.0 to 5.0
Zinc (Zn), % 0 to 0.060
0.7 to 1.3
Residuals, % 0
0 to 0.4

Comparable Variants