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SAE-AISI M3 Class 1 Steel vs. Zamak 7

SAE-AISI M3 class 1 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 M3 class 1 steel and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
86
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 77
33
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
280

Thermal Properties

Latent Heat of Fusion, J/g 260
120
Melting Completion (Liquidus), °C 1610
390
Melting Onset (Solidus), °C 1570
380
Specific Heat Capacity, J/kg-K 440
410
Thermal Conductivity, W/m-K 26
110
Thermal Expansion, µm/m-K 12
27

Otherwise Unclassified Properties

Base Metal Price, % relative 25
11
Density, g/cm3 8.3
6.4
Embodied Carbon, kg CO2/kg material 10
3.0
Embodied Energy, MJ/kg 150
57
Embodied Water, L/kg 100
380

Common Calculations

Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 26 to 72
12
Strength to Weight: Bending, points 22 to 44
15
Thermal Diffusivity, mm2/s 7.2
43
Thermal Shock Resistance, points 24 to 67
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 1.0 to 1.1
0
Chromium (Cr), % 3.8 to 4.5
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 76.9 to 82.9
0 to 0.075
Lead (Pb), % 0
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 4.8 to 6.5
0
Nickel (Ni), % 0 to 0.3
0.0050 to 0.020
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.45
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.0010
Tungsten (W), % 5.0 to 6.8
0
Vanadium (V), % 2.3 to 2.8
0
Zinc (Zn), % 0
95.3 to 96.5