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ASTM B631 Class B vs. C85800 Brass

ASTM B631 class B belongs to the otherwise unclassified metals classification, while C85800 brass belongs to the copper alloys. There are 17 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is ASTM B631 class B and the bottom bar is C85800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
100
Poisson's Ratio 0.31
0.31
Rockwell B Hardness 53 to 85
56
Shear Modulus, GPa 78 to 79
40

Thermal Properties

Latent Heat of Fusion, J/g 150
170
Melting Completion (Liquidus), °C 2460 to 2480
900
Specific Heat Capacity, J/kg-K 170
380
Thermal Conductivity, W/m-K 450
84
Thermal Expansion, µm/m-K 12
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 50 to 53
20
Electrical Conductivity: Equal Weight (Specific), % IACS 32 to 34
22

Otherwise Unclassified Properties

Density, g/cm3 14
8.0
Embodied Carbon, kg CO2/kg material 49
2.8
Embodied Energy, MJ/kg 760
47

Common Calculations

Stiffness to Weight: Axial, points 8.1
7.2
Stiffness to Weight: Bending, points 14
20
Thermal Diffusivity, mm2/s 190
27