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Zamak 5 vs. ASTM B540 Palladium

Zamak 5 belongs to the zinc alloys classification, while ASTM B540 palladium belongs to the otherwise unclassified metals. There are 24 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is Zamak 5 and the bottom bar is ASTM B540 palladium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
110
Elongation at Break, % 6.3
1.1 to 14
Fatigue Strength, MPa 56
350
Knoop Hardness 120
230 to 380
Poisson's Ratio 0.25
0.38
Shear Modulus, GPa 33
39
Shear Strength, MPa 260
500 to 700
Tensile Strength: Ultimate (UTS), MPa 330
830 to 1240
Tensile Strength: Yield (Proof), MPa 240
620 to 1000

Thermal Properties

Latent Heat of Fusion, J/g 120
140
Melting Completion (Liquidus), °C 390
1220
Melting Onset (Solidus), °C 380
1020
Specific Heat Capacity, J/kg-K 410
240
Thermal Expansion, µm/m-K 27
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
4.9 to 5.5
Electrical Conductivity: Equal Weight (Specific), % IACS 37
3.5 to 3.9

Otherwise Unclassified Properties

Density, g/cm3 6.4
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
13 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 330
1790 to 4660
Stiffness to Weight: Axial, points 7.5
4.7
Stiffness to Weight: Bending, points 23
12
Strength to Weight: Axial, points 14
18 to 27
Strength to Weight: Bending, points 16
15 to 20
Thermal Shock Resistance, points 9.9
41 to 61

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0050
0
Copper (Cu), % 0.7 to 1.3
13.5 to 14.5
Gold (Au), % 0
9.5 to 10.5
Iron (Fe), % 0 to 0.1
0
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.025 to 0.080
0
Nickel (Ni), % 0 to 0.020
0
Palladium (Pd), % 0
34 to 36
Platinum (Pt), % 0
9.5 to 10.5
Silicon (Si), % 0 to 0.030
0
Silver (Ag), % 0
29 to 31
Tin (Sn), % 0 to 0.0030
0
Zinc (Zn), % 94.3 to 95.7
0.8 to 1.2
Residuals, % 0
0 to 0.3