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Zamak 7 vs. EN 1.7221 Steel

Zamak 7 belongs to the zinc alloys classification, while EN 1.7221 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is EN 1.7221 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
200 to 230
Elastic (Young's, Tensile) Modulus, GPa 86
190
Elongation at Break, % 13
11 to 17
Fatigue Strength, MPa 47
290 to 390
Poisson's Ratio 0.25
0.29
Shear Modulus, GPa 33
73
Tensile Strength: Ultimate (UTS), MPa 280
650 to 780
Tensile Strength: Yield (Proof), MPa 250
430 to 630

Thermal Properties

Latent Heat of Fusion, J/g 120
250
Maximum Temperature: Mechanical, °C 95
420
Melting Completion (Liquidus), °C 390
1460
Melting Onset (Solidus), °C 380
1420
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 110
44
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 38
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.4
Density, g/cm3 6.4
7.8
Embodied Carbon, kg CO2/kg material 3.0
1.5
Embodied Energy, MJ/kg 57
20
Embodied Water, L/kg 380
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
83 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 370
490 to 1050
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 12
23 to 27
Strength to Weight: Bending, points 15
21 to 24
Thermal Diffusivity, mm2/s 43
12
Thermal Shock Resistance, points 8.6
19 to 23

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0.22 to 0.29
Chromium (Cr), % 0
0.8 to 1.2
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.075
96.8 to 98.3
Lead (Pb), % 0 to 0.0030
0
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
0.5 to 0.8
Molybdenum (Mo), % 0
0.15 to 0.3
Nickel (Ni), % 0.0050 to 0.020
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.0010
0
Zinc (Zn), % 95.3 to 96.5
0