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ASTM B780 Alloy vs. ASTM B628 Ag-Cu

Both ASTM B780 alloy and ASTM B628 Ag-Cu are otherwise unclassified metals. They have a very high 97% of their average alloy composition in common. There are 17 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM B780 alloy and the bottom bar is ASTM B628 Ag-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
83
Elongation at Break, % 1.1 to 9.1
1.1 to 17
Poisson's Ratio 0.36
0.36
Shear Modulus, GPa 30
31
Shear Strength, MPa 200 to 340
210 to 430
Tensile Strength: Ultimate (UTS), MPa 330 to 590
350 to 760

Thermal Properties

Latent Heat of Fusion, J/g 140
140
Specific Heat Capacity, J/kg-K 270
280
Thermal Expansion, µm/m-K 18
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 70 to 76
84
Electrical Conductivity: Equal Weight (Specific), % IACS 62 to 68
75

Otherwise Unclassified Properties

Density, g/cm3 10
10

Common Calculations

Stiffness to Weight: Axial, points 4.5
4.6
Stiffness to Weight: Bending, points 14
14
Strength to Weight: Axial, points 9.1 to 16
9.5 to 21
Strength to Weight: Bending, points 11 to 15
11 to 18
Thermal Shock Resistance, points 16 to 29
16 to 34

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Cadmium (Cd), % 0 to 0.050
0 to 0.050
Copper (Cu), % 23.5 to 25.7
26.6 to 29
Iron (Fe), % 0 to 0.050
0 to 0.050
Lead (Pb), % 0 to 0.030
0 to 0.030
Nickel (Ni), % 0.35 to 0.65
0 to 0.010
Phosphorus (P), % 0
0 to 0.030
Silver (Ag), % 74 to 76
71 to 73
Zinc (Zn), % 0 to 0.060
0 to 0.060
Residuals, % 0
0 to 0.21

Comparable Variants