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ACI-ASTM CA40 Steel vs. Zamak 7

ACI-ASTM CA40 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 CA40 steel and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
80
Elastic (Young's, Tensile) Modulus, GPa 190
86
Elongation at Break, % 10
13
Fatigue Strength, MPa 460
47
Poisson's Ratio 0.28
0.25
Shear Modulus, GPa 76
33
Tensile Strength: Ultimate (UTS), MPa 910
280
Tensile Strength: Yield (Proof), MPa 860
250

Thermal Properties

Latent Heat of Fusion, J/g 280
120
Maximum Temperature: Mechanical, °C 750
95
Melting Completion (Liquidus), °C 1440
390
Melting Onset (Solidus), °C 1500
380
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 25
110
Thermal Expansion, µm/m-K 10
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
27
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
38

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
11
Density, g/cm3 7.7
6.4
Embodied Carbon, kg CO2/kg material 2.0
3.0
Embodied Energy, MJ/kg 28
57
Embodied Water, L/kg 100
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
36
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
370
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 33
12
Strength to Weight: Bending, points 27
15
Thermal Diffusivity, mm2/s 6.7
43
Thermal Shock Resistance, points 33
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 0.2 to 0.4
0
Chromium (Cr), % 11.5 to 14
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 81.5 to 88.3
0 to 0.075
Lead (Pb), % 0
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 1.0
0.0050 to 0.020
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.0010
Zinc (Zn), % 0
95.3 to 96.5