ASTM B628 Ag-Cu vs. CR023A Copper

ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while CR023A copper belongs to the copper alloys. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. 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 CR023A copper.

ASTM B628 Silver-Copper Eutectic Electrical Contact Alloy EN CR023A (Cu-DLP) Oxygen-Free Low-Phosphorus Copper

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		83
Elastic (Young's, Tensile) Modulus, GPa		120

Elongation at Break, %		1.1 to 17
Elongation at Break, %		15

Poisson's Ratio		0.36
Poisson's Ratio		0.34

Shear Modulus, GPa		31
Shear Modulus, GPa		43

Tensile Strength: Ultimate (UTS), MPa		350 to 760
Tensile Strength: Ultimate (UTS), MPa		220

Thermal Properties

Latent Heat of Fusion, J/g		140
Latent Heat of Fusion, J/g		210

Melting Completion (Liquidus), °C		780
Melting Completion (Liquidus), °C		1090

Melting Onset (Solidus), °C		780
Melting Onset (Solidus), °C		1040

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		17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		84
Electrical Conductivity: Equal Volume, % IACS		100

Electrical Conductivity: Equal Weight (Specific), % IACS		75
Electrical Conductivity: Equal Weight (Specific), % IACS		100

Otherwise Unclassified Properties

Density, g/cm³		10
Density, g/cm³		9.0

Common Calculations

Stiffness to Weight: Axial, points		4.6
Stiffness to Weight: Axial, points		7.2

Stiffness to Weight: Bending, points		14
Stiffness to Weight: Bending, points		18

Strength to Weight: Axial, points		9.5 to 21
Strength to Weight: Axial, points		6.8

Strength to Weight: Bending, points		11 to 18
Strength to Weight: Bending, points		9.0

Thermal Shock Resistance, points		16 to 34
Thermal Shock Resistance, points		7.8

Alloy Composition

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

Bismuth (Bi), %		0
Bismuth (Bi), %		0 to 0.00050

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

Copper (Cu), %		26.6 to 29
Copper (Cu), %		99.9 to 99.995

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

Lead (Pb), %		0 to 0.030
Lead (Pb), %		0 to 0.0050

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

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0.0050 to 0.013

Silver (Ag), %		71 to 73
Silver (Ag), %		0 to 0.015

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

Residuals, %		0 to 0.21
Residuals, %		0