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Zamak 7 vs. R30556 Alloy

Zamak 7 belongs to the zinc alloys classification, while R30556 alloy 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 R30556 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
210
Elongation at Break, % 13
45
Fatigue Strength, MPa 47
320
Poisson's Ratio 0.25
0.28
Shear Modulus, GPa 33
81
Shear Strength, MPa 210
550
Tensile Strength: Ultimate (UTS), MPa 280
780
Tensile Strength: Yield (Proof), MPa 250
350

Thermal Properties

Latent Heat of Fusion, J/g 120
300
Maximum Temperature: Mechanical, °C 95
1100
Melting Completion (Liquidus), °C 390
1420
Melting Onset (Solidus), °C 380
1330
Specific Heat Capacity, J/kg-K 410
450
Thermal Conductivity, W/m-K 110
11
Thermal Expansion, µm/m-K 27
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 38
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
70
Density, g/cm3 6.4
8.4
Embodied Carbon, kg CO2/kg material 3.0
8.7
Embodied Energy, MJ/kg 57
130
Embodied Water, L/kg 380
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
290
Resilience: Unit (Modulus of Resilience), kJ/m3 370
290
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 12
26
Strength to Weight: Bending, points 15
22
Thermal Diffusivity, mm2/s 43
2.9
Thermal Shock Resistance, points 8.6
18

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0.1 to 0.5
Boron (B), % 0
0 to 0.020
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
21 to 23
Cobalt (Co), % 0
16 to 21
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.075
20.4 to 38.2
Lanthanum (La), % 0
0.0050 to 0.1
Lead (Pb), % 0 to 0.0030
0
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
0.5 to 2.0
Molybdenum (Mo), % 0
2.5 to 4.0
Nickel (Ni), % 0.0050 to 0.020
19 to 22.5
Niobium (Nb), % 0
0 to 0.3
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0.2 to 0.8
Sulfur (S), % 0
0 to 0.015
Tantalum (Ta), % 0
0.3 to 1.3
Tin (Sn), % 0 to 0.0010
0
Tungsten (W), % 0
2.0 to 3.5
Zinc (Zn), % 95.3 to 96.5
0.0010 to 0.1