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ASTM B631 Class A vs. C43000 Brass

ASTM B631 class A belongs to the otherwise unclassified metals classification, while C43000 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 A and the bottom bar is C43000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Poisson's Ratio 0.3
0.33
Rockwell B Hardness 63 to 98
30 to 100
Shear Modulus, GPa 85 to 86
42

Thermal Properties

Latent Heat of Fusion, J/g 160
190
Melting Completion (Liquidus), °C 2680 to 2690
1030
Specific Heat Capacity, J/kg-K 160
380
Thermal Conductivity, W/m-K 420
120
Thermal Expansion, µm/m-K 11
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40 to 47
27
Electrical Conductivity: Equal Weight (Specific), % IACS 25 to 29
28

Otherwise Unclassified Properties

Density, g/cm3 15
8.6
Embodied Carbon, kg CO2/kg material 43
2.8
Embodied Energy, MJ/kg 670
46

Common Calculations

Stiffness to Weight: Axial, points 8.5
7.1
Stiffness to Weight: Bending, points 14
19
Thermal Diffusivity, mm2/s 180
36