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Zamak 7 vs. SAE-AISI 4340M Steel

Zamak 7 belongs to the zinc alloys classification, while SAE-AISI 4340M steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is SAE-AISI 4340M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
710
Elastic (Young's, Tensile) Modulus, GPa 86
190
Elongation at Break, % 13
6.0
Fatigue Strength, MPa 47
690
Poisson's Ratio 0.25
0.29
Shear Modulus, GPa 33
72
Shear Strength, MPa 210
1360
Tensile Strength: Ultimate (UTS), MPa 280
2340
Tensile Strength: Yield (Proof), MPa 250
1240

Thermal Properties

Latent Heat of Fusion, J/g 120
280
Maximum Temperature: Mechanical, °C 95
430
Melting Completion (Liquidus), °C 390
1440
Melting Onset (Solidus), °C 380
1400
Specific Heat Capacity, J/kg-K 410
480
Thermal Conductivity, W/m-K 110
38
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 38
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 11
3.9
Density, g/cm3 6.4
7.8
Embodied Carbon, kg CO2/kg material 3.0
1.9
Embodied Energy, MJ/kg 57
26
Embodied Water, L/kg 380
55

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
120
Resilience: Unit (Modulus of Resilience), kJ/m3 370
4120
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 12
84
Strength to Weight: Bending, points 15
51
Thermal Diffusivity, mm2/s 43
10
Thermal Shock Resistance, points 8.6
70

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 1.0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.075
93.3 to 94.8
Lead (Pb), % 0 to 0.0030
0
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
0.65 to 0.9
Molybdenum (Mo), % 0
0.35 to 0.45
Nickel (Ni), % 0.0050 to 0.020
1.7 to 2.0
Phosphorus (P), % 0
0 to 0.012
Silicon (Si), % 0
1.5 to 1.8
Sulfur (S), % 0
0 to 0.012
Tin (Sn), % 0 to 0.0010
0
Vanadium (V), % 0
0.050 to 0.1
Zinc (Zn), % 95.3 to 96.5
0