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CR017A Copper vs. Solder Alloy 704

CR017A copper belongs to the copper alloys classification, while solder alloy 704 belongs to the otherwise unclassified metals. There are 22 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is CR017A copper and the bottom bar is solder alloy 704.

EN CR017A (CuAg0.04(OF)) Silver-Bearing Oxygen-Free Copper ISO Solder Alloy 704 (Sn95Ag5)

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		51

Elongation at Break, %		15
Elongation at Break, %		30

Poisson's Ratio		0.34
Poisson's Ratio		0.36

Shear Modulus, GPa		43
Shear Modulus, GPa		19

Tensile Strength: Ultimate (UTS), MPa		230
Tensile Strength: Ultimate (UTS), MPa		55

Thermal Properties

Latent Heat of Fusion, J/g		210
Latent Heat of Fusion, J/g		62

Melting Completion (Liquidus), °C		1090
Melting Completion (Liquidus), °C		240

Melting Onset (Solidus), °C		1040
Melting Onset (Solidus), °C		220

Specific Heat Capacity, J/kg-K		390
Specific Heat Capacity, J/kg-K		220

Thermal Conductivity, W/m-K		380
Thermal Conductivity, W/m-K		50

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		100
Electrical Conductivity: Equal Volume, % IACS		13

Electrical Conductivity: Equal Weight (Specific), % IACS		100
Electrical Conductivity: Equal Weight (Specific), % IACS		15

Otherwise Unclassified Properties

Density, g/cm³		9.0
Density, g/cm³		7.5

Embodied Carbon, kg CO₂/kg material		2.6
Embodied Carbon, kg CO₂/kg material		19

Embodied Energy, MJ/kg		42
Embodied Energy, MJ/kg		320

Common Calculations

Stiffness to Weight: Axial, points		7.2
Stiffness to Weight: Axial, points		3.8

Stiffness to Weight: Bending, points		18
Stiffness to Weight: Bending, points		17

Strength to Weight: Axial, points		7.1
Strength to Weight: Axial, points		2.1

Strength to Weight: Bending, points		9.3
Strength to Weight: Bending, points		4.3

Thermal Diffusivity, mm²/s		110
Thermal Diffusivity, mm²/s		30

Thermal Shock Resistance, points		8.1
Thermal Shock Resistance, points		3.5

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.0010

Antimony (Sb), %		0
Antimony (Sb), %		0 to 0.1

Arsenic (As), %		0
Arsenic (As), %		0 to 0.030

Bismuth (Bi), %		0 to 0.00050
Bismuth (Bi), %		0 to 0.1

Cadmium (Cd), %		0
Cadmium (Cd), %		0 to 0.0020

Copper (Cu), %		99.944 to 99.97
Copper (Cu), %		0 to 0.050

Gold (Au), %		0
Gold (Au), %		0 to 0.050

Indium (In), %		0
Indium (In), %		0 to 0.1

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

Lead (Pb), %		0
Lead (Pb), %		0 to 0.070

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

Silver (Ag), %		0.030 to 0.050
Silver (Ag), %		4.8 to 5.2

Tin (Sn), %		0
Tin (Sn), %		94.3 to 95.2

Zinc (Zn), %		0
Zinc (Zn), %		0 to 0.0010