C68700 Brass vs. C14180 Copper

Both C68700 brass and C14180 copper are copper alloys. They have 78% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C68700 brass and the bottom bar is C14180 copper.

UNS C68700 (CW702R) Aluminum Brass UNS C14180 (BCu-1) Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		120

Poisson's Ratio		0.32
Poisson's Ratio		0.34

Shear Modulus, GPa		41
Shear Modulus, GPa		43

Tensile Strength: Ultimate (UTS), MPa		390
Tensile Strength: Ultimate (UTS), MPa		210

Tensile Strength: Yield (Proof), MPa		140
Tensile Strength: Yield (Proof), MPa		130

Thermal Properties

Latent Heat of Fusion, J/g		190
Latent Heat of Fusion, J/g		210

Maximum Temperature: Mechanical, °C		160
Maximum Temperature: Mechanical, °C		200

Melting Completion (Liquidus), °C		970
Melting Completion (Liquidus), °C		1080

Melting Onset (Solidus), °C		930
Melting Onset (Solidus), °C		1080

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

Thermal Conductivity, W/m-K		100
Thermal Conductivity, W/m-K		370

Thermal Expansion, µm/m-K		19
Thermal Expansion, µm/m-K		17

Otherwise Unclassified Properties

Base Metal Price, % relative		26
Base Metal Price, % relative		31

Density, g/cm³		8.3
Density, g/cm³		9.0

Embodied Carbon, kg CO₂/kg material		2.8
Embodied Carbon, kg CO₂/kg material		2.6

Embodied Energy, MJ/kg		46
Embodied Energy, MJ/kg		41

Embodied Water, L/kg		340
Embodied Water, L/kg		310

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m³		90
Resilience: Unit (Modulus of Resilience), kJ/m³		69

Stiffness to Weight: Axial, points		7.3
Stiffness to Weight: Axial, points		7.2

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

Strength to Weight: Axial, points		13
Strength to Weight: Axial, points		6.5

Strength to Weight: Bending, points		14
Strength to Weight: Bending, points		8.8

Thermal Diffusivity, mm²/s		30
Thermal Diffusivity, mm²/s		110

Thermal Shock Resistance, points		13
Thermal Shock Resistance, points		7.4

Alloy Composition

Aluminum (Al), %		1.8 to 2.5
Aluminum (Al), %		0 to 0.010

Arsenic (As), %		0.020 to 0.1
Arsenic (As), %		0

Copper (Cu), %		76 to 79
Copper (Cu), %		99.9 to 100

Iron (Fe), %		0 to 0.060
Iron (Fe), %		0

Lead (Pb), %		0 to 0.070
Lead (Pb), %		0 to 0.020

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.075

Zinc (Zn), %		17.8 to 22.2
Zinc (Zn), %		0

Residuals, %		0 to 0.5
Residuals, %		0