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C24000 Brass vs. C84400 Valve Metal

Both C24000 brass and C84400 valve metal are copper alloys. They have 89% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C24000 brass and the bottom bar is C84400 valve metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 42
39
Tensile Strength: Ultimate (UTS), MPa 310 to 640
230

Thermal Properties

Latent Heat of Fusion, J/g 190
180
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 1000
1000
Melting Onset (Solidus), °C 970
840
Specific Heat Capacity, J/kg-K 390
370
Thermal Conductivity, W/m-K 140
72
Thermal Expansion, µm/m-K 19
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
16
Electrical Conductivity: Equal Weight (Specific), % IACS 34
17

Otherwise Unclassified Properties

Base Metal Price, % relative 27
29
Density, g/cm3 8.5
8.8
Embodied Carbon, kg CO2/kg material 2.6
2.8
Embodied Energy, MJ/kg 43
46
Embodied Water, L/kg 320
340

Common Calculations

Stiffness to Weight: Axial, points 7.2
6.6
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 10 to 21
7.2
Strength to Weight: Bending, points 12 to 20
9.4
Thermal Diffusivity, mm2/s 43
22
Thermal Shock Resistance, points 10 to 22
8.3

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 78.5 to 81.5
78 to 82
Iron (Fe), % 0 to 0.050
0 to 0.4
Lead (Pb), % 0 to 0.050
6.0 to 8.0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.3 to 3.5
Zinc (Zn), % 18.2 to 21.5
7.0 to 10
Residuals, % 0
0 to 0.7