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C68700 Brass vs. ASTM B631 Class B

C68700 brass belongs to the copper alloys classification, while ASTM B631 class B belongs to the otherwise unclassified metals. There are 16 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 C68700 brass and the bottom bar is ASTM B631 class B.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Poisson's Ratio 0.32
0.31
Shear Modulus, GPa 41
78 to 79

Thermal Properties

Latent Heat of Fusion, J/g 190
150
Melting Completion (Liquidus), °C 970
2460 to 2480
Specific Heat Capacity, J/kg-K 400
170
Thermal Conductivity, W/m-K 100
450
Thermal Expansion, µm/m-K 19
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
50 to 53
Electrical Conductivity: Equal Weight (Specific), % IACS 25
32 to 34

Otherwise Unclassified Properties

Density, g/cm3 8.3
14
Embodied Carbon, kg CO2/kg material 2.8
49
Embodied Energy, MJ/kg 46
760

Common Calculations

Stiffness to Weight: Axial, points 7.3
8.1
Stiffness to Weight: Bending, points 19
14
Thermal Diffusivity, mm2/s 30
190