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ASTM B631 Class A vs. C93700 Bronze

ASTM B631 class A belongs to the otherwise unclassified metals classification, while C93700 bronze belongs to the copper alloys. There are 17 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is ASTM B631 class A and the bottom bar is C93700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
99
Poisson's Ratio 0.3
0.35
Rockwell B Hardness 63 to 98
60
Shear Modulus, GPa 85 to 86
37

Thermal Properties

Latent Heat of Fusion, J/g 160
170
Melting Completion (Liquidus), °C 2680 to 2690
930
Specific Heat Capacity, J/kg-K 160
350
Thermal Conductivity, W/m-K 420
47
Thermal Expansion, µm/m-K 11
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40 to 47
10
Electrical Conductivity: Equal Weight (Specific), % IACS 25 to 29
10

Otherwise Unclassified Properties

Density, g/cm3 15
8.9
Embodied Carbon, kg CO2/kg material 43
3.5
Embodied Energy, MJ/kg 670
57

Common Calculations

Stiffness to Weight: Axial, points 8.5
6.2
Stiffness to Weight: Bending, points 14
17
Thermal Diffusivity, mm2/s 180
15