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Ductile Cast Iron vs. Zamak 2

Ductile cast iron belongs to the iron alloys classification, while Zamak 2 belongs to the zinc alloys. There are 30 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 ductile cast iron and the bottom bar is Zamak 2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 310
100
Elastic (Young's, Tensile) Modulus, GPa 170 to 180
87
Elongation at Break, % 2.1 to 20
6.0
Poisson's Ratio 0.28 to 0.31
0.26
Shear Modulus, GPa 64 to 70
33
Shear Strength, MPa 420 to 800
320
Tensile Strength: Ultimate (UTS), MPa 460 to 920
360
Tensile Strength: Yield (Proof), MPa 310 to 670
270

Thermal Properties

Latent Heat of Fusion, J/g 270
130
Maximum Temperature: Mechanical, °C 290
95
Melting Completion (Liquidus), °C 1160
390
Melting Onset (Solidus), °C 1120
380
Specific Heat Capacity, J/kg-K 490
410
Thermal Conductivity, W/m-K 31 to 36
110
Thermal Expansion, µm/m-K 11
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
25
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.4
35

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
12
Density, g/cm3 7.1 to 7.5
6.5
Embodied Carbon, kg CO2/kg material 1.5
3.0
Embodied Energy, MJ/kg 21
57
Embodied Water, L/kg 43
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
20
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
420
Stiffness to Weight: Axial, points 12 to 14
7.5
Stiffness to Weight: Bending, points 24 to 26
23
Strength to Weight: Axial, points 17 to 35
15
Strength to Weight: Bending, points 18 to 29
17
Thermal Diffusivity, mm2/s 8.9 to 10
41
Thermal Shock Resistance, points 17 to 35
11

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 3.0 to 3.5
0
Copper (Cu), % 0
2.5 to 3.3
Iron (Fe), % 93.7 to 95.5
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.020 to 0.060
Nickel (Ni), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.080
0
Silicon (Si), % 1.5 to 2.8
0 to 0.030
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
92.2 to 94