C77300 Nickel Silver vs. ASTM B628 Ag-Cu

C77300 nickel silver belongs to the copper alloys classification, while ASTM B628 Ag-Cu belongs to the otherwise unclassified metals. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. There are 17 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is C77300 nickel silver and the bottom bar is ASTM B628 Ag-Cu.

UNS C77300 (RBCuZn-D) Filler Metal ASTM B628 Silver-Copper Eutectic Electrical Contact Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		83

Poisson's Ratio		0.3
Poisson's Ratio		0.36

Shear Modulus, GPa		42
Shear Modulus, GPa		31

Tensile Strength: Ultimate (UTS), MPa		540
Tensile Strength: Ultimate (UTS), MPa		350 to 760

Thermal Properties

Latent Heat of Fusion, J/g		180
Latent Heat of Fusion, J/g		140

Melting Completion (Liquidus), °C		940
Melting Completion (Liquidus), °C		780

Melting Onset (Solidus), °C		920
Melting Onset (Solidus), °C		780

Specific Heat Capacity, J/kg-K		390
Specific Heat Capacity, J/kg-K		280

Thermal Expansion, µm/m-K		20
Thermal Expansion, µm/m-K		19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		5.5
Electrical Conductivity: Equal Volume, % IACS		84

Electrical Conductivity: Equal Weight (Specific), % IACS		6.3
Electrical Conductivity: Equal Weight (Specific), % IACS		75

Otherwise Unclassified Properties

Density, g/cm³		7.9
Density, g/cm³		10

Common Calculations

Stiffness to Weight: Axial, points		7.7
Stiffness to Weight: Axial, points		4.6

Stiffness to Weight: Bending, points		20
Stiffness to Weight: Bending, points		14

Strength to Weight: Axial, points		19
Strength to Weight: Axial, points		9.5 to 21

Strength to Weight: Bending, points		19
Strength to Weight: Bending, points		11 to 18

Thermal Shock Resistance, points		17
Thermal Shock Resistance, points		16 to 34

Alloy Composition

Aluminum (Al), %		0 to 0.010
Aluminum (Al), %		0 to 0.0050

Cadmium (Cd), %		0
Cadmium (Cd), %		0 to 0.050

Copper (Cu), %		46 to 50
Copper (Cu), %		26.6 to 29

Iron (Fe), %		0
Iron (Fe), %		0 to 0.050

Lead (Pb), %		0 to 0.050
Lead (Pb), %		0 to 0.030

Nickel (Ni), %		9.0 to 11
Nickel (Ni), %		0 to 0.010

Phosphorus (P), %		0 to 0.25
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0.040 to 0.25
Silicon (Si), %		0

Silver (Ag), %		0
Silver (Ag), %		71 to 73

Zinc (Zn), %		37.9 to 45
Zinc (Zn), %		0 to 0.060

Residuals, %		0
Residuals, %		0 to 0.21