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ZA-27 vs. R05255 Alloy

ZA-27 belongs to the zinc alloys classification, while R05255 alloy belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (16, 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 ZA-27 and the bottom bar is R05255 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 78
190
Elongation at Break, % 2.0 to 4.5
20
Poisson's Ratio 0.27
0.34
Shear Modulus, GPa 31
70
Tensile Strength: Ultimate (UTS), MPa 400 to 430
540
Tensile Strength: Yield (Proof), MPa 260 to 370
450

Thermal Properties

Latent Heat of Fusion, J/g 130
140
Specific Heat Capacity, J/kg-K 530
140
Thermal Conductivity, W/m-K 130
59
Thermal Expansion, µm/m-K 26
6.6

Otherwise Unclassified Properties

Density, g/cm3 5.0
17
Embodied Water, L/kg 570
630

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.1 to 18
100
Resilience: Unit (Modulus of Resilience), kJ/m3 420 to 890
530
Stiffness to Weight: Axial, points 8.6
6.3
Stiffness to Weight: Bending, points 28
11
Strength to Weight: Axial, points 22 to 24
9.1
Strength to Weight: Bending, points 24 to 25
8.9
Thermal Diffusivity, mm2/s 47
25
Thermal Shock Resistance, points 14 to 15
31

Alloy Composition

Aluminum (Al), % 25 to 28
0
Cadmium (Cd), % 0 to 0.0060
0
Carbon (C), % 0
0 to 0.010
Copper (Cu), % 2.0 to 2.5
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.1
0 to 0.010
Lead (Pb), % 0 to 0.0060
0
Magnesium (Mg), % 0.010 to 0.020
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0 to 0.020
0 to 0.010
Niobium (Nb), % 0
0 to 0.5
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Silicon (Si), % 0 to 0.080
0 to 0.0050
Tantalum (Ta), % 0
95.9 to 98
Tin (Sn), % 0 to 0.0030
0
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
2.0 to 3.5
Zinc (Zn), % 69.3 to 73
0