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Zamak 7 vs. SAE-AISI 4340 Steel

Zamak 7 belongs to the zinc alloys classification, while SAE-AISI 4340 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 4340 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
210 to 360
Elastic (Young's, Tensile) Modulus, GPa 86
190
Elongation at Break, % 13
12 to 22
Fatigue Strength, MPa 47
330 to 740
Poisson's Ratio 0.25
0.29
Shear Modulus, GPa 33
73
Shear Strength, MPa 210
430 to 770
Tensile Strength: Ultimate (UTS), MPa 280
690 to 1280
Tensile Strength: Yield (Proof), MPa 250
470 to 1150

Thermal Properties

Latent Heat of Fusion, J/g 120
250
Maximum Temperature: Mechanical, °C 95
430
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
44
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
1.7
Embodied Energy, MJ/kg 57
22
Embodied Water, L/kg 380
53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
79 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 370
590 to 3490
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 12
24 to 45
Strength to Weight: Bending, points 15
22 to 33
Thermal Diffusivity, mm2/s 43
12
Thermal Shock Resistance, points 8.6
20 to 38

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0.38 to 0.43
Chromium (Cr), % 0
0.7 to 0.9
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.075
95.1 to 96.3
Lead (Pb), % 0 to 0.0030
0
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
0.6 to 0.8
Molybdenum (Mo), % 0
0.2 to 0.3
Nickel (Ni), % 0.0050 to 0.020
1.7 to 2.0
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