C69700 Brass vs. C70400 Copper-nickel

Both C69700 brass and C70400 copper-nickel are copper alloys. They have 79% 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 C69700 brass and the bottom bar is C70400 copper-nickel.

UNS C69700 Leaded Silicon Brass UNS C70400 Copper-Nickel

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		45

Tensile Strength: Ultimate (UTS), MPa		470
Tensile Strength: Ultimate (UTS), MPa		300 to 310

Tensile Strength: Yield (Proof), MPa		230
Tensile Strength: Yield (Proof), MPa		95 to 230

Thermal Properties

Latent Heat of Fusion, J/g		240
Latent Heat of Fusion, J/g		210

Maximum Temperature: Mechanical, °C		160
Maximum Temperature: Mechanical, °C		210

Melting Completion (Liquidus), °C		930
Melting Completion (Liquidus), °C		1120

Melting Onset (Solidus), °C		880
Melting Onset (Solidus), °C		1060

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

Thermal Conductivity, W/m-K		43
Thermal Conductivity, W/m-K		64

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

Otherwise Unclassified Properties

Base Metal Price, % relative		26
Base Metal Price, % relative		32

Density, g/cm³		8.3
Density, g/cm³		8.9

Embodied Carbon, kg CO₂/kg material		2.7
Embodied Carbon, kg CO₂/kg material		3.0

Embodied Energy, MJ/kg		44
Embodied Energy, MJ/kg		47

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

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m³		250
Resilience: Unit (Modulus of Resilience), kJ/m³		38 to 220

Stiffness to Weight: Axial, points		7.3
Stiffness to Weight: Axial, points		7.5

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

Strength to Weight: Axial, points		16
Strength to Weight: Axial, points		9.3 to 9.8

Strength to Weight: Bending, points		16
Strength to Weight: Bending, points		11 to 12

Thermal Diffusivity, mm²/s		13
Thermal Diffusivity, mm²/s		18

Thermal Shock Resistance, points		16
Thermal Shock Resistance, points		10 to 11

Alloy Composition

Copper (Cu), %		75 to 80
Copper (Cu), %		89.8 to 93.6

Iron (Fe), %		0 to 0.2
Iron (Fe), %		1.3 to 1.7

Lead (Pb), %		0.5 to 1.5
Lead (Pb), %		0 to 0.050

Manganese (Mn), %		0 to 0.4
Manganese (Mn), %		0.3 to 0.8

Nickel (Ni), %		0
Nickel (Ni), %		4.8 to 6.2

Silicon (Si), %		2.5 to 3.5
Silicon (Si), %		0

Zinc (Zn), %		13.9 to 22
Zinc (Zn), %		0 to 1.0

Residuals, %		0
Residuals, %		0 to 0.5