ASTM B628 Ag-Cu vs. Commercially Pure Zinc

ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while commercially pure zinc belongs to the zinc alloys. There are 18 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is ASTM B628 Ag-Cu and the bottom bar is commercially pure zinc.

ASTM B628 Silver-Copper Eutectic Electrical Contact Alloy Commercially Pure Rolled Zinc (Z15006)

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		83
Elastic (Young's, Tensile) Modulus, GPa		87

Elongation at Break, %		1.1 to 17
Elongation at Break, %		38

Poisson's Ratio		0.36
Poisson's Ratio		0.25

Shear Modulus, GPa		31
Shear Modulus, GPa		35

Tensile Strength: Ultimate (UTS), MPa		350 to 760
Tensile Strength: Ultimate (UTS), MPa		97

Thermal Properties

Latent Heat of Fusion, J/g		140
Latent Heat of Fusion, J/g		110

Melting Completion (Liquidus), °C		780
Melting Completion (Liquidus), °C		410

Melting Onset (Solidus), °C		780
Melting Onset (Solidus), °C		400

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

Thermal Expansion, µm/m-K		19
Thermal Expansion, µm/m-K		26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		84
Electrical Conductivity: Equal Volume, % IACS		27

Electrical Conductivity: Equal Weight (Specific), % IACS		75
Electrical Conductivity: Equal Weight (Specific), % IACS		37

Otherwise Unclassified Properties

Density, g/cm³		10
Density, g/cm³		6.6

Common Calculations

Stiffness to Weight: Axial, points		4.6
Stiffness to Weight: Axial, points		7.4

Stiffness to Weight: Bending, points		14
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		9.5 to 21
Strength to Weight: Axial, points		4.1

Strength to Weight: Bending, points		11 to 18
Strength to Weight: Bending, points		7.1

Thermal Shock Resistance, points		16 to 34
Thermal Shock Resistance, points		3.0

Alloy Composition

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

Cadmium (Cd), %		0 to 0.050
Cadmium (Cd), %		0 to 0.010

Copper (Cu), %		26.6 to 29
Copper (Cu), %		0 to 0.080

Iron (Fe), %		0 to 0.050
Iron (Fe), %		0 to 0.020

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

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

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

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

Tin (Sn), %		0
Tin (Sn), %		0 to 0.0030

Titanium (Ti), %		0
Titanium (Ti), %		0 to 0.020

Zinc (Zn), %		0 to 0.060
Zinc (Zn), %		99.827 to 100

Residuals, %		0 to 0.21
Residuals, %		0