CR018A Copper vs. ASTM B541 Gold

CR018A copper belongs to the copper alloys classification, while ASTM B541 gold belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is CR018A copper and the bottom bar is ASTM B541 gold.

EN CR018A (CuAg0.07(OF)) Silver-Bearing Oxygen-Free Copper ASTM B541 Gold Electrical Contact Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		110

Elongation at Break, %		15
Elongation at Break, %		6.0 to 14

Poisson's Ratio		0.34
Poisson's Ratio		0.4

Shear Modulus, GPa		43
Shear Modulus, GPa		38

Tensile Strength: Ultimate (UTS), MPa		220
Tensile Strength: Ultimate (UTS), MPa		670 to 1180

Tensile Strength: Yield (Proof), MPa		130
Tensile Strength: Yield (Proof), MPa		480 to 900

Thermal Properties

Latent Heat of Fusion, J/g		210
Latent Heat of Fusion, J/g		90

Melting Completion (Liquidus), °C		1090
Melting Completion (Liquidus), °C		1110

Melting Onset (Solidus), °C		1040
Melting Onset (Solidus), °C		930

Specific Heat Capacity, J/kg-K		390
Specific Heat Capacity, J/kg-K		170

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		100
Electrical Conductivity: Equal Volume, % IACS		7.7 to 12

Electrical Conductivity: Equal Weight (Specific), % IACS		100
Electrical Conductivity: Equal Weight (Specific), % IACS		4.0 to 6.2

Otherwise Unclassified Properties

Density, g/cm³		9.0
Density, g/cm³		17

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		29
Resilience: Ultimate (Unit Rupture Work), MJ/m³		65 to 91

Resilience: Unit (Modulus of Resilience), kJ/m³		76
Resilience: Unit (Modulus of Resilience), kJ/m³		1090 to 3830

Stiffness to Weight: Axial, points		7.2
Stiffness to Weight: Axial, points		3.4

Stiffness to Weight: Bending, points		18
Stiffness to Weight: Bending, points		9.0

Strength to Weight: Axial, points		6.8
Strength to Weight: Axial, points		11 to 19

Strength to Weight: Bending, points		9.0
Strength to Weight: Bending, points		9.8 to 14

Thermal Shock Resistance, points		7.8
Thermal Shock Resistance, points		36 to 63

Alloy Composition

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

Copper (Cu), %		99.914 to 99.94
Copper (Cu), %		13.5 to 15.5

Gold (Au), %		0
Gold (Au), %		70.5 to 72.5

Platinum (Pt), %		0
Platinum (Pt), %		8.0 to 9.0

Silver (Ag), %		0.060 to 0.080
Silver (Ag), %		4.0 to 5.0

Zinc (Zn), %		0
Zinc (Zn), %		0.7 to 1.3

Residuals, %		0
Residuals, %		0 to 0.4