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Zamak 7 vs. Chromium 33

Zamak 7 belongs to the zinc alloys classification, while chromium 33 belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is chromium 33.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
200
Elongation at Break, % 13
45
Poisson's Ratio 0.25
0.27
Shear Modulus, GPa 33
81
Tensile Strength: Ultimate (UTS), MPa 280
850
Tensile Strength: Yield (Proof), MPa 250
430

Thermal Properties

Latent Heat of Fusion, J/g 120
320
Specific Heat Capacity, J/kg-K 410
480
Thermal Expansion, µm/m-K 27
14

Otherwise Unclassified Properties

Base Metal Price, % relative 11
36
Density, g/cm3 6.4
7.9
Embodied Carbon, kg CO2/kg material 3.0
6.0
Embodied Energy, MJ/kg 57
84
Embodied Water, L/kg 380
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
320
Resilience: Unit (Modulus of Resilience), kJ/m3 370
450
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 12
30
Strength to Weight: Bending, points 15
25
Thermal Shock Resistance, points 8.6
21

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0 to 0.015
Chromium (Cr), % 0
31 to 35
Copper (Cu), % 0 to 0.25
0.3 to 1.2
Iron (Fe), % 0 to 0.075
25.7 to 37.9
Lead (Pb), % 0 to 0.0030
0
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0.5 to 2.0
Nickel (Ni), % 0.0050 to 0.020
30 to 33
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 0 to 0.0010
0
Zinc (Zn), % 95.3 to 96.5
0