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ACI-ASTM CH20 Steel vs. Zamak 7

ACI-ASTM CH20 steel belongs to the iron alloys classification, while Zamak 7 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 ACI-ASTM CH20 steel and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
80
Elastic (Young's, Tensile) Modulus, GPa 200
86
Elongation at Break, % 38
13
Fatigue Strength, MPa 290
47
Poisson's Ratio 0.27
0.25
Shear Modulus, GPa 78
33
Tensile Strength: Ultimate (UTS), MPa 610
280
Tensile Strength: Yield (Proof), MPa 350
250

Thermal Properties

Latent Heat of Fusion, J/g 310
120
Maximum Temperature: Mechanical, °C 1100
95
Melting Completion (Liquidus), °C 1410
390
Melting Onset (Solidus), °C 1430
380
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 14
110
Thermal Expansion, µm/m-K 15
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
27
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
38

Otherwise Unclassified Properties

Base Metal Price, % relative 20
11
Density, g/cm3 7.8
6.4
Embodied Carbon, kg CO2/kg material 3.7
3.0
Embodied Energy, MJ/kg 53
57
Embodied Water, L/kg 180
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
36
Resilience: Unit (Modulus of Resilience), kJ/m3 300
370
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 22
12
Strength to Weight: Bending, points 21
15
Thermal Diffusivity, mm2/s 3.7
43
Thermal Shock Resistance, points 15
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 22 to 26
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 54.7 to 66
0 to 0.075
Lead (Pb), % 0
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 12 to 15
0.0050 to 0.020
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.0010
Zinc (Zn), % 0
95.3 to 96.5