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Zamak 7 vs. ASTM A356 Grade 8

Zamak 7 belongs to the zinc alloys classification, while ASTM A356 grade 8 belongs to the iron 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 Zamak 7 and the bottom bar is ASTM A356 grade 8.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
190
Elastic (Young's, Tensile) Modulus, GPa 86
190
Elongation at Break, % 13
21
Fatigue Strength, MPa 47
270
Poisson's Ratio 0.25
0.29
Shear Modulus, GPa 33
73
Tensile Strength: Ultimate (UTS), MPa 280
630
Tensile Strength: Yield (Proof), MPa 250
390

Thermal Properties

Latent Heat of Fusion, J/g 120
260
Maximum Temperature: Mechanical, °C 95
440
Melting Completion (Liquidus), °C 390
1470
Melting Onset (Solidus), °C 380
1430
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 110
38
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 38
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 11
3.5
Density, g/cm3 6.4
7.8
Embodied Carbon, kg CO2/kg material 3.0
2.0
Embodied Energy, MJ/kg 57
26
Embodied Water, L/kg 380
55

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
110
Resilience: Unit (Modulus of Resilience), kJ/m3 370
390
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 12
22
Strength to Weight: Bending, points 15
21
Thermal Diffusivity, mm2/s 43
10
Thermal Shock Resistance, points 8.6
18

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
1.0 to 1.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.075
95.4 to 97.4
Lead (Pb), % 0 to 0.0030
0
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
0.5 to 0.9
Molybdenum (Mo), % 0
0.9 to 1.2
Nickel (Ni), % 0.0050 to 0.020
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.2 to 0.6
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.0010
0
Vanadium (V), % 0
0.050 to 0.15
Zinc (Zn), % 95.3 to 96.5
0