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Zamak 3 vs. S21800 Stainless Steel

Zamak 3 belongs to the zinc alloys classification, while S21800 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is Zamak 3 and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 83
210
Elastic (Young's, Tensile) Modulus, GPa 86
190
Elongation at Break, % 11
40
Fatigue Strength, MPa 48
330
Poisson's Ratio 0.25
0.28
Rockwell B Hardness 50
88
Shear Modulus, GPa 33
75
Shear Strength, MPa 210
510
Tensile Strength: Ultimate (UTS), MPa 280
740
Tensile Strength: Yield (Proof), MPa 210
390

Thermal Properties

Latent Heat of Fusion, J/g 120
340
Maximum Temperature: Mechanical, °C 95
900
Melting Completion (Liquidus), °C 390
1360
Melting Onset (Solidus), °C 380
1310
Specific Heat Capacity, J/kg-K 410
500
Thermal Expansion, µm/m-K 27
16

Otherwise Unclassified Properties

Base Metal Price, % relative 11
15
Density, g/cm3 6.4
7.5
Embodied Carbon, kg CO2/kg material 3.0
3.1
Embodied Energy, MJ/kg 57
45
Embodied Water, L/kg 380
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
250
Resilience: Unit (Modulus of Resilience), kJ/m3 260
390
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
26
Strength to Weight: Axial, points 12
27
Strength to Weight: Bending, points 15
24
Thermal Shock Resistance, points 8.6
17

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0050
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.1
59.1 to 65.4
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.020 to 0.060
0
Manganese (Mn), % 0
7.0 to 9.0
Nickel (Ni), % 0 to 0.020
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0 to 0.030
3.5 to 4.5
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.0030
0
Zinc (Zn), % 95.3 to 96.5
0