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SAE-AISI A7 Steel vs. Zamak 7

SAE-AISI A7 steel belongs to the iron alloys classification, while Zamak 7 belongs to the zinc alloys. There are 21 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A7 steel and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
86
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 72
33
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
280

Thermal Properties

Latent Heat of Fusion, J/g 260
120
Melting Completion (Liquidus), °C 1470
390
Melting Onset (Solidus), °C 1430
380
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 37
110
Thermal Expansion, µm/m-K 12
27

Otherwise Unclassified Properties

Base Metal Price, % relative 10
11
Density, g/cm3 7.7
6.4
Embodied Carbon, kg CO2/kg material 13
3.0
Embodied Energy, MJ/kg 200
57
Embodied Water, L/kg 100
380

Common Calculations

Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 29 to 77
12
Strength to Weight: Bending, points 25 to 48
15
Thermal Diffusivity, mm2/s 10
43
Thermal Shock Resistance, points 27 to 72
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 2.0 to 2.9
0
Chromium (Cr), % 5.0 to 5.8
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 81.4 to 87.7
0 to 0.075
Lead (Pb), % 0
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Manganese (Mn), % 0 to 0.8
0
Molybdenum (Mo), % 0.9 to 1.4
0
Nickel (Ni), % 0 to 0.3
0.0050 to 0.020
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.0010
Tungsten (W), % 0.5 to 1.5
0
Vanadium (V), % 3.9 to 5.2
0
Zinc (Zn), % 0
95.3 to 96.5