C70250 Copper vs. C66100 Bronze

Both C70250 copper and C66100 bronze are copper alloys. They have a very high 96% of their average alloy composition in common. 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 C70250 copper and the bottom bar is C66100 bronze.

UNS C70250 (CW112C) Nickel-Silicon Copper UNS C66100 Leaded Silicon Bronze

Metric UnitsUS Customary Units

Mechanical Properties

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

Poisson's Ratio		0.34
Poisson's Ratio		0.34

Shear Modulus, GPa		44
Shear Modulus, GPa		43

Tensile Strength: Ultimate (UTS), MPa		520 to 740
Tensile Strength: Ultimate (UTS), MPa		410 to 790

Thermal Properties

Latent Heat of Fusion, J/g		220
Latent Heat of Fusion, J/g		260

Maximum Temperature: Mechanical, °C		210
Maximum Temperature: Mechanical, °C		200

Melting Completion (Liquidus), °C		1100
Melting Completion (Liquidus), °C		1050

Melting Onset (Solidus), °C		1080
Melting Onset (Solidus), °C		1000

Specific Heat Capacity, J/kg-K		390
Specific Heat Capacity, J/kg-K		400

Thermal Conductivity, W/m-K		170
Thermal Conductivity, W/m-K		34

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

Otherwise Unclassified Properties

Base Metal Price, % relative		31
Base Metal Price, % relative		29

Density, g/cm³		8.9
Density, g/cm³		8.7

Embodied Carbon, kg CO₂/kg material		2.9
Embodied Carbon, kg CO₂/kg material		2.6

Embodied Energy, MJ/kg		45
Embodied Energy, MJ/kg		42

Embodied Water, L/kg		310
Embodied Water, L/kg		300

Common Calculations

Stiffness to Weight: Axial, points		7.4
Stiffness to Weight: Axial, points		7.4

Stiffness to Weight: Bending, points		18
Stiffness to Weight: Bending, points		19

Strength to Weight: Axial, points		16 to 23
Strength to Weight: Axial, points		13 to 25

Strength to Weight: Bending, points		16 to 21
Strength to Weight: Bending, points		14 to 22

Thermal Diffusivity, mm²/s		49
Thermal Diffusivity, mm²/s		9.7

Thermal Shock Resistance, points		18 to 26
Thermal Shock Resistance, points		15 to 29

Alloy Composition

Copper (Cu), %		92.7 to 97.5
Copper (Cu), %		92 to 97

Iron (Fe), %		0
Iron (Fe), %		0 to 0.25

Lead (Pb), %		0 to 0.050
Lead (Pb), %		0.2 to 0.8

Magnesium (Mg), %		0.050 to 0.3
Magnesium (Mg), %		0

Manganese (Mn), %		0 to 0.1
Manganese (Mn), %		0 to 1.5

Nickel (Ni), %		2.2 to 4.2
Nickel (Ni), %		0

Silicon (Si), %		0.25 to 1.2
Silicon (Si), %		2.8 to 3.5

Zinc (Zn), %		0 to 1.0
Zinc (Zn), %		0 to 1.5

Residuals, %		0
Residuals, %		0 to 0.5