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ASTM B628 Ag-Cu vs. AWS BAu-4

Both ASTM B628 Ag-Cu and AWS BAu-4 are otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM B628 Ag-Cu and the bottom bar is AWS BAu-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
110
Poisson's Ratio 0.36
0.4
Shear Modulus, GPa 31
41
Tensile Strength: Ultimate (UTS), MPa 350 to 760
200

Thermal Properties

Latent Heat of Fusion, J/g 140
100
Melting Completion (Liquidus), °C 780
950
Melting Onset (Solidus), °C 780
950
Specific Heat Capacity, J/kg-K 280
190
Thermal Expansion, µm/m-K 19
14

Otherwise Unclassified Properties

Density, g/cm3 10
17

Common Calculations

Stiffness to Weight: Axial, points 4.6
3.6
Stiffness to Weight: Bending, points 14
9.3
Strength to Weight: Axial, points 9.5 to 21
3.2
Strength to Weight: Bending, points 11 to 18
4.4
Thermal Shock Resistance, points 16 to 34
9.2

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Cadmium (Cd), % 0 to 0.050
0
Copper (Cu), % 26.6 to 29
0
Gold (Au), % 0
81.5 to 82.5
Iron (Fe), % 0 to 0.050
0
Lead (Pb), % 0 to 0.030
0
Nickel (Ni), % 0 to 0.010
17.4 to 18.5
Phosphorus (P), % 0 to 0.030
0
Silver (Ag), % 71 to 73
0
Zinc (Zn), % 0 to 0.060
0
Residuals, % 0
0 to 0.15