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ASTM B631 Class C vs. C42500 Brass

ASTM B631 class C belongs to the otherwise unclassified metals classification, while C42500 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 C42500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180 to 190
110
Poisson's Ratio 0.32
0.33
Rockwell B Hardness 43 to 68
60 to 92
Shear Modulus, GPa 66 to 71
42

Thermal Properties

Latent Heat of Fusion, J/g 140 to 150
200
Melting Completion (Liquidus), °C 2090 to 2230
1030
Specific Heat Capacity, J/kg-K 180
380
Thermal Conductivity, W/m-K 450 to 490
120
Thermal Expansion, µm/m-K 14
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 55 to 63
28
Electrical Conductivity: Equal Weight (Specific), % IACS 36 to 43
29

Otherwise Unclassified Properties

Density, g/cm3 13 to 14
8.7
Embodied Carbon, kg CO2/kg material 55 to 59
2.8
Embodied Energy, MJ/kg 860 to 920
46

Common Calculations

Stiffness to Weight: Axial, points 7.4 to 7.6
7.1
Stiffness to Weight: Bending, points 14
18
Thermal Diffusivity, mm2/s 180 to 200
36