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ASTM B631 Class A vs. C94700 Bronze

ASTM B631 class A belongs to the otherwise unclassified metals classification, while C94700 bronze belongs to the copper alloys. There are 16 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is ASTM B631 class A and the bottom bar is C94700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Poisson's Ratio 0.3
0.34
Shear Modulus, GPa 85 to 86
43

Thermal Properties

Latent Heat of Fusion, J/g 160
200
Melting Completion (Liquidus), °C 2680 to 2690
1030
Specific Heat Capacity, J/kg-K 160
380
Thermal Conductivity, W/m-K 420
54
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40 to 47
12
Electrical Conductivity: Equal Weight (Specific), % IACS 25 to 29
12

Otherwise Unclassified Properties

Density, g/cm3 15
8.8
Embodied Carbon, kg CO2/kg material 43
3.5
Embodied Energy, MJ/kg 670
56

Common Calculations

Stiffness to Weight: Axial, points 8.5
7.3
Stiffness to Weight: Bending, points 14
18
Thermal Diffusivity, mm2/s 180
16