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SAE-AISI H21 Steel vs. Zamak 3

SAE-AISI H21 steel belongs to the iron alloys classification, while Zamak 3 belongs to the zinc alloys. There are 21 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H21 steel and the bottom bar is Zamak 3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
86
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 76
33
Tensile Strength: Ultimate (UTS), MPa 720 to 1790
280

Thermal Properties

Latent Heat of Fusion, J/g 250
120
Melting Completion (Liquidus), °C 1630
390
Melting Onset (Solidus), °C 1580
380
Specific Heat Capacity, J/kg-K 440
410
Thermal Conductivity, W/m-K 27
110
Thermal Expansion, µm/m-K 11
27

Otherwise Unclassified Properties

Base Metal Price, % relative 23
11
Density, g/cm3 8.5
6.4
Embodied Carbon, kg CO2/kg material 4.5
3.0
Embodied Energy, MJ/kg 68
57
Embodied Water, L/kg 72
380

Common Calculations

Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 23 to 58
12
Strength to Weight: Bending, points 21 to 38
15
Thermal Diffusivity, mm2/s 7.1
43
Thermal Shock Resistance, points 24 to 59
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0.28 to 0.36
0
Chromium (Cr), % 3.0 to 3.8
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 87.6 to 93.8
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.020 to 0.060
Manganese (Mn), % 0.15 to 0.4
0
Nickel (Ni), % 0 to 0.3
0 to 0.020
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 0.5
0 to 0.030
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.0030
Tungsten (W), % 8.5 to 10
0
Vanadium (V), % 0.3 to 0.6
0
Zinc (Zn), % 0
95.3 to 96.5