C55181 Copper vs. C90700 Bronze

Both C55181 copper and C90700 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 90% 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 C90700 bronze.

UNS C55181 (BCuP-2) Filler Metal UNS C90700 (SAE 65) Gear Bronze

Metric UnitsUS Customary Units

Mechanical Properties

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

Poisson's Ratio		0.34
Poisson's Ratio		0.34

Shear Modulus, GPa		40
Shear Modulus, GPa		40

Tensile Strength: Ultimate (UTS), MPa		200
Tensile Strength: Ultimate (UTS), MPa		330

Thermal Properties

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

Maximum Temperature: Mechanical, °C		200
Maximum Temperature: Mechanical, °C		170

Melting Completion (Liquidus), °C		790
Melting Completion (Liquidus), °C		1000

Melting Onset (Solidus), °C		710
Melting Onset (Solidus), °C		830

Specific Heat Capacity, J/kg-K		410
Specific Heat Capacity, J/kg-K		370

Thermal Expansion, µm/m-K		16
Thermal Expansion, µm/m-K		18

Otherwise Unclassified Properties

Base Metal Price, % relative		28
Base Metal Price, % relative		35

Density, g/cm³		8.5
Density, g/cm³		8.7

Embodied Carbon, kg CO₂/kg material		2.4
Embodied Carbon, kg CO₂/kg material		3.7

Embodied Energy, MJ/kg		38
Embodied Energy, MJ/kg		60

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

Common Calculations

Stiffness to Weight: Axial, points		7.0
Stiffness to Weight: Axial, points		6.9

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

Strength to Weight: Axial, points		6.5
Strength to Weight: Axial, points		10

Strength to Weight: Bending, points		8.9
Strength to Weight: Bending, points		12

Thermal Shock Resistance, points		8.2
Thermal Shock Resistance, points		12

Alloy Composition

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

Antimony (Sb), %		0
Antimony (Sb), %		0 to 0.2

Copper (Cu), %		92.4 to 93
Copper (Cu), %		88 to 90

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

Lead (Pb), %		0
Lead (Pb), %		0 to 0.5

Nickel (Ni), %		0
Nickel (Ni), %		0 to 0.5

Phosphorus (P), %		7.0 to 7.5
Phosphorus (P), %		0 to 1.5

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

Sulfur (S), %		0
Sulfur (S), %		0 to 0.050

Tin (Sn), %		0
Tin (Sn), %		10 to 12

Zinc (Zn), %		0
Zinc (Zn), %		0 to 0.5

Residuals, %		0
Residuals, %		0 to 0.6