C63800 Bronze vs. ASTM B631 Class A

C63800 bronze belongs to the copper alloys classification, while ASTM B631 class A belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is C63800 bronze and the bottom bar is ASTM B631 class A.

UNS C63800 Aluminum Bronze ASTM B631 Class A Silver-Tungsten Electrical Contact Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		220

Poisson's Ratio		0.34
Poisson's Ratio		0.3

Rockwell B Hardness		94 to 110
Rockwell B Hardness		63 to 98

Shear Modulus, GPa		43
Shear Modulus, GPa		85 to 86

Thermal Properties

Latent Heat of Fusion, J/g		240
Latent Heat of Fusion, J/g		160

Melting Completion (Liquidus), °C		1030
Melting Completion (Liquidus), °C		2680 to 2690

Specific Heat Capacity, J/kg-K		410
Specific Heat Capacity, J/kg-K		160

Thermal Conductivity, W/m-K		40
Thermal Conductivity, W/m-K		420

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		10
Electrical Conductivity: Equal Volume, % IACS		40 to 47

Electrical Conductivity: Equal Weight (Specific), % IACS		10
Electrical Conductivity: Equal Weight (Specific), % IACS		25 to 29

Otherwise Unclassified Properties

Density, g/cm³		8.6
Density, g/cm³		15

Embodied Carbon, kg CO₂/kg material		2.8
Embodied Carbon, kg CO₂/kg material		43

Embodied Energy, MJ/kg		45
Embodied Energy, MJ/kg		670

Common Calculations

Stiffness to Weight: Axial, points		7.4
Stiffness to Weight: Axial, points		8.5

Stiffness to Weight: Bending, points		19
Stiffness to Weight: Bending, points		14

Thermal Diffusivity, mm²/s		11
Thermal Diffusivity, mm²/s		180