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Zamak 7 vs. S31266 Stainless Steel

Zamak 7 belongs to the zinc alloys classification, while S31266 stainless steel belongs to the iron alloys. There are 30 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 S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
210
Elongation at Break, % 13
40
Fatigue Strength, MPa 47
400
Poisson's Ratio 0.25
0.28
Shear Modulus, GPa 33
81
Shear Strength, MPa 210
590
Tensile Strength: Ultimate (UTS), MPa 280
860
Tensile Strength: Yield (Proof), MPa 250
470

Thermal Properties

Latent Heat of Fusion, J/g 120
310
Maximum Temperature: Mechanical, °C 95
1100
Melting Completion (Liquidus), °C 390
1470
Melting Onset (Solidus), °C 380
1420
Specific Heat Capacity, J/kg-K 410
460
Thermal Conductivity, W/m-K 110
12
Thermal Expansion, µm/m-K 27
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 38
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 11
37
Density, g/cm3 6.4
8.2
Embodied Carbon, kg CO2/kg material 3.0
6.5
Embodied Energy, MJ/kg 57
89
Embodied Water, L/kg 380
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
290
Resilience: Unit (Modulus of Resilience), kJ/m3 370
540
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 12
29
Strength to Weight: Bending, points 15
24
Thermal Diffusivity, mm2/s 43
3.1
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 0.030
Chromium (Cr), % 0
23 to 25
Copper (Cu), % 0 to 0.25
1.0 to 2.5
Iron (Fe), % 0 to 0.075
34.1 to 46
Lead (Pb), % 0 to 0.0030
0
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
2.0 to 4.0
Molybdenum (Mo), % 0
5.2 to 6.2
Nickel (Ni), % 0.0050 to 0.020
21 to 24
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 0 to 0.0010
0
Tungsten (W), % 0
1.5 to 2.5
Zinc (Zn), % 95.3 to 96.5
0