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ASTM B631 Class C vs. C66700 Brass

ASTM B631 class C belongs to the otherwise unclassified metals classification, while C66700 brass belongs to the copper alloys. There are 17 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is ASTM B631 class C and the bottom bar is C66700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180 to 190
110
Poisson's Ratio 0.32
0.31
Rockwell B Hardness 43 to 68
57 to 93
Shear Modulus, GPa 66 to 71
41

Thermal Properties

Latent Heat of Fusion, J/g 140 to 150
180
Melting Completion (Liquidus), °C 2090 to 2230
1090
Specific Heat Capacity, J/kg-K 180
390
Thermal Conductivity, W/m-K 450 to 490
97
Thermal Expansion, µm/m-K 14
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 55 to 63
17
Electrical Conductivity: Equal Weight (Specific), % IACS 36 to 43
19

Otherwise Unclassified Properties

Density, g/cm3 13 to 14
8.2
Embodied Carbon, kg CO2/kg material 55 to 59
2.7
Embodied Energy, MJ/kg 860 to 920
45

Common Calculations

Stiffness to Weight: Axial, points 7.4 to 7.6
7.3
Stiffness to Weight: Bending, points 14
19
Thermal Diffusivity, mm2/s 180 to 200
30