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Zamak 7 vs. SAE-AISI 8645 Steel

Zamak 7 belongs to the zinc alloys classification, while SAE-AISI 8645 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is SAE-AISI 8645 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
180 to 200
Elastic (Young's, Tensile) Modulus, GPa 86
190
Elongation at Break, % 13
12 to 23
Fatigue Strength, MPa 47
280 to 350
Poisson's Ratio 0.25
0.29
Shear Modulus, GPa 33
73
Shear Strength, MPa 210
380 to 400
Tensile Strength: Ultimate (UTS), MPa 280
600 to 670
Tensile Strength: Yield (Proof), MPa 250
390 to 560

Thermal Properties

Latent Heat of Fusion, J/g 120
250
Maximum Temperature: Mechanical, °C 95
410
Melting Completion (Liquidus), °C 390
1460
Melting Onset (Solidus), °C 380
1420
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 110
39
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 38
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.6
Density, g/cm3 6.4
7.8
Embodied Carbon, kg CO2/kg material 3.0
1.5
Embodied Energy, MJ/kg 57
20
Embodied Water, L/kg 380
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
77 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 370
420 to 840
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 12
21 to 24
Strength to Weight: Bending, points 15
20 to 22
Thermal Diffusivity, mm2/s 43
10
Thermal Shock Resistance, points 8.6
18 to 20

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0.43 to 0.48
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.075
96.5 to 97.7
Lead (Pb), % 0 to 0.0030
0
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0.0050 to 0.020
0.4 to 0.7
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 0 to 0.0010
0
Zinc (Zn), % 95.3 to 96.5
0