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Zamak 7 vs. C84400 Valve Metal

Zamak 7 belongs to the zinc alloys classification, while C84400 valve metal belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is C84400 valve metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
100
Elongation at Break, % 13
19
Poisson's Ratio 0.25
0.34
Shear Modulus, GPa 33
39
Tensile Strength: Ultimate (UTS), MPa 280
230
Tensile Strength: Yield (Proof), MPa 250
110

Thermal Properties

Latent Heat of Fusion, J/g 120
180
Maximum Temperature: Mechanical, °C 95
160
Melting Completion (Liquidus), °C 390
1000
Melting Onset (Solidus), °C 380
840
Specific Heat Capacity, J/kg-K 410
370
Thermal Conductivity, W/m-K 110
72
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
16
Electrical Conductivity: Equal Weight (Specific), % IACS 38
17

Otherwise Unclassified Properties

Base Metal Price, % relative 11
29
Density, g/cm3 6.4
8.8
Embodied Carbon, kg CO2/kg material 3.0
2.8
Embodied Energy, MJ/kg 57
46
Embodied Water, L/kg 380
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
36
Resilience: Unit (Modulus of Resilience), kJ/m3 370
58
Stiffness to Weight: Axial, points 7.5
6.6
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 12
7.2
Strength to Weight: Bending, points 15
9.4
Thermal Diffusivity, mm2/s 43
22
Thermal Shock Resistance, points 8.6
8.3

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.25
78 to 82
Iron (Fe), % 0 to 0.075
0 to 0.4
Lead (Pb), % 0 to 0.0030
6.0 to 8.0
Magnesium (Mg), % 0.0050 to 0.020
0
Nickel (Ni), % 0.0050 to 0.020
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 to 0.0010
2.3 to 3.5
Zinc (Zn), % 95.3 to 96.5
7.0 to 10
Residuals, % 0
0 to 0.7