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Zamak 7 vs. S35125 Stainless Steel

Zamak 7 belongs to the zinc alloys classification, while S35125 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is S35125 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
200
Elongation at Break, % 13
39
Fatigue Strength, MPa 47
200
Poisson's Ratio 0.25
0.28
Shear Modulus, GPa 33
78
Shear Strength, MPa 210
370
Tensile Strength: Ultimate (UTS), MPa 280
540
Tensile Strength: Yield (Proof), MPa 250
230

Thermal Properties

Latent Heat of Fusion, J/g 120
300
Maximum Temperature: Mechanical, °C 95
1100
Melting Completion (Liquidus), °C 390
1430
Melting Onset (Solidus), °C 380
1380
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 110
12
Thermal Expansion, µm/m-K 27
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 38
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
36
Density, g/cm3 6.4
8.1
Embodied Carbon, kg CO2/kg material 3.0
6.4
Embodied Energy, MJ/kg 57
89
Embodied Water, L/kg 380
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
170
Resilience: Unit (Modulus of Resilience), kJ/m3 370
140
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 12
19
Strength to Weight: Bending, points 15
18
Thermal Diffusivity, mm2/s 43
3.1
Thermal Shock Resistance, points 8.6
12

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
20 to 23
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.075
36.2 to 45.8
Lead (Pb), % 0 to 0.0030
0
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
1.0 to 1.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0.0050 to 0.020
31 to 35
Niobium (Nb), % 0
0.25 to 0.6
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.0010
0
Zinc (Zn), % 95.3 to 96.5
0