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Zamak 2 vs. ACI-ASTM CF20 Steel

Zamak 2 belongs to the zinc alloys classification, while ACI-ASTM CF20 steel belongs to the iron alloys. There are 30 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 Zamak 2 and the bottom bar is ACI-ASTM CF20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100
160
Elastic (Young's, Tensile) Modulus, GPa 87
200
Elongation at Break, % 6.0
50
Fatigue Strength, MPa 59
240
Poisson's Ratio 0.26
0.28
Shear Modulus, GPa 33
77
Tensile Strength: Ultimate (UTS), MPa 360
530
Tensile Strength: Yield (Proof), MPa 270
250

Thermal Properties

Latent Heat of Fusion, J/g 130
300
Maximum Temperature: Mechanical, °C 95
970
Melting Completion (Liquidus), °C 390
1420
Melting Onset (Solidus), °C 380
1410
Specific Heat Capacity, J/kg-K 410
480
Thermal Conductivity, W/m-K 110
16
Thermal Expansion, µm/m-K 28
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 35
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
16
Density, g/cm3 6.5
7.8
Embodied Carbon, kg CO2/kg material 3.0
3.1
Embodied Energy, MJ/kg 57
44
Embodied Water, L/kg 380
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
220
Resilience: Unit (Modulus of Resilience), kJ/m3 420
160
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 15
19
Strength to Weight: Bending, points 17
19
Thermal Diffusivity, mm2/s 41
4.3
Thermal Shock Resistance, points 11
11

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0050
0
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
18 to 21
Copper (Cu), % 2.5 to 3.3
0
Iron (Fe), % 0 to 0.1
64.2 to 74
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.020 to 0.060
0
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0 to 0.020
8.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.030
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 0 to 0.0030
0
Zinc (Zn), % 92.2 to 94
0