CR011A Copper vs. R05240 Alloy

CR011A copper belongs to the copper alloys classification, while R05240 alloy belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is CR011A copper and the bottom bar is R05240 alloy.

EN CR011A (CuAg0.04) Silver-Bearing Tough Pitch Copper UNS R05240 Tantalum-Niobium Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		150

Elongation at Break, %		15
Elongation at Break, %		25

Poisson's Ratio		0.34
Poisson's Ratio		0.36

Shear Modulus, GPa		43
Shear Modulus, GPa		57

Tensile Strength: Ultimate (UTS), MPa		220
Tensile Strength: Ultimate (UTS), MPa		270

Tensile Strength: Yield (Proof), MPa		130
Tensile Strength: Yield (Proof), MPa		170

Thermal Properties

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

Specific Heat Capacity, J/kg-K		390
Specific Heat Capacity, J/kg-K		190

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		6.8

Otherwise Unclassified Properties

Density, g/cm³		9.0
Density, g/cm³		14

Embodied Water, L/kg		340
Embodied Water, L/kg		460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		29
Resilience: Ultimate (Unit Rupture Work), MJ/m³		59

Resilience: Unit (Modulus of Resilience), kJ/m³		76
Resilience: Unit (Modulus of Resilience), kJ/m³		90

Stiffness to Weight: Axial, points		7.2
Stiffness to Weight: Axial, points		6.3

Stiffness to Weight: Bending, points		18
Stiffness to Weight: Bending, points		13

Strength to Weight: Axial, points		6.8
Strength to Weight: Axial, points		5.4

Strength to Weight: Bending, points		9.0
Strength to Weight: Bending, points		6.8

Thermal Shock Resistance, points		7.8
Thermal Shock Resistance, points		18

Alloy Composition

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

Carbon (C), %		0
Carbon (C), %		0 to 0.010

Copper (Cu), %		99.88 to 99.97
Copper (Cu), %		0

Hydrogen (H), %		0
Hydrogen (H), %		0 to 0.0015

Iron (Fe), %		0
Iron (Fe), %		0 to 0.010

Molybdenum (Mo), %		0
Molybdenum (Mo), %		0 to 0.020

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

Niobium (Nb), %		0
Niobium (Nb), %		35 to 42

Nitrogen (N), %		0
Nitrogen (N), %		0 to 0.010

Oxygen (O), %		0 to 0.040
Oxygen (O), %		0 to 0.020

Silicon (Si), %		0
Silicon (Si), %		0 to 0.0050

Silver (Ag), %		0.030 to 0.050
Silver (Ag), %		0

Tantalum (Ta), %		0
Tantalum (Ta), %		57.9 to 65

Titanium (Ti), %		0
Titanium (Ti), %		0 to 0.010

Tungsten (W), %		0
Tungsten (W), %		0 to 0.050