C12600 Copper vs. ASTM B541 Gold

C12600 copper belongs to the copper alloys classification, while ASTM B541 gold belongs to the otherwise unclassified metals. There are 22 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 C12600 copper and the bottom bar is ASTM B541 gold.

UNS C12600 Fire-Refined Tough Pitch 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, %		56
Elongation at Break, %		6.0 to 14

Poisson's Ratio		0.34
Poisson's Ratio		0.4

Shear Modulus, GPa		56
Shear Modulus, GPa		38

Shear Strength, MPa		190
Shear Strength, MPa		410 to 690

Tensile Strength: Ultimate (UTS), MPa		270
Tensile Strength: Ultimate (UTS), MPa		670 to 1180

Tensile Strength: Yield (Proof), MPa		69
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		1080
Melting Completion (Liquidus), °C		1110

Melting Onset (Solidus), °C		1030
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		29
Electrical Conductivity: Equal Volume, % IACS		7.7 to 12

Electrical Conductivity: Equal Weight (Specific), % IACS		29
Electrical Conductivity: Equal Weight (Specific), % IACS		4.0 to 6.2

Otherwise Unclassified Properties

Density, g/cm³		8.9
Density, g/cm³		17

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		110
Resilience: Ultimate (Unit Rupture Work), MJ/m³		65 to 91

Resilience: Unit (Modulus of Resilience), kJ/m³		21
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		8.2
Strength to Weight: Axial, points		11 to 19

Strength to Weight: Bending, points		10
Strength to Weight: Bending, points		9.8 to 14

Thermal Shock Resistance, points		9.5
Thermal Shock Resistance, points		36 to 63

Alloy Composition

Copper (Cu), %		99.5 to 99.8
Copper (Cu), %		13.5 to 15.5

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

Phosphorus (P), %		0.2 to 0.4
Phosphorus (P), %		0

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

Silver (Ag), %		0
Silver (Ag), %		4.0 to 5.0

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

Residuals, %		0
Residuals, %		0 to 0.4