C55181 Copper vs. C94400 Bronze

Both C55181 copper and C94400 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 80% of their average alloy composition in common. There are 20 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 C55181 copper and the bottom bar is C94400 bronze.

UNS C55181 (BCuP-2) Filler Metal UNS C94400 Leaded Tin Bronze

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		100

Poisson's Ratio		0.34
Poisson's Ratio		0.35

Shear Modulus, GPa		40
Shear Modulus, GPa		37

Tensile Strength: Ultimate (UTS), MPa		200
Tensile Strength: Ultimate (UTS), MPa		220

Thermal Properties

Latent Heat of Fusion, J/g		190
Latent Heat of Fusion, J/g		180

Maximum Temperature: Mechanical, °C		200
Maximum Temperature: Mechanical, °C		150

Melting Completion (Liquidus), °C		790
Melting Completion (Liquidus), °C		940

Melting Onset (Solidus), °C		710
Melting Onset (Solidus), °C		790

Specific Heat Capacity, J/kg-K		410
Specific Heat Capacity, J/kg-K		350

Thermal Expansion, µm/m-K		16
Thermal Expansion, µm/m-K		19

Otherwise Unclassified Properties

Base Metal Price, % relative		28
Base Metal Price, % relative		32

Density, g/cm³		8.5
Density, g/cm³		9.1

Embodied Carbon, kg CO₂/kg material		2.4
Embodied Carbon, kg CO₂/kg material		3.4

Embodied Energy, MJ/kg		38
Embodied Energy, MJ/kg		54

Embodied Water, L/kg		290
Embodied Water, L/kg		390

Common Calculations

Stiffness to Weight: Axial, points		7.0
Stiffness to Weight: Axial, points		6.1

Stiffness to Weight: Bending, points		19
Stiffness to Weight: Bending, points		17

Strength to Weight: Axial, points		6.5
Strength to Weight: Axial, points		6.8

Strength to Weight: Bending, points		8.9
Strength to Weight: Bending, points		9.0

Thermal Shock Resistance, points		8.2
Thermal Shock Resistance, points		8.3

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.0050

Antimony (Sb), %		0
Antimony (Sb), %		0 to 0.8

Copper (Cu), %		92.4 to 93
Copper (Cu), %		76.1 to 84

Iron (Fe), %		0
Iron (Fe), %		0 to 0.15

Lead (Pb), %		0
Lead (Pb), %		9.0 to 12

Nickel (Ni), %		0
Nickel (Ni), %		0 to 1.0

Phosphorus (P), %		7.0 to 7.5
Phosphorus (P), %		0 to 0.050

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

Sulfur (S), %		0
Sulfur (S), %		0 to 0.080

Tin (Sn), %		0
Tin (Sn), %		7.0 to 9.0

Zinc (Zn), %		0
Zinc (Zn), %		0 to 0.8

Residuals, %		0 to 0.15
Residuals, %		0