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ZA-27 vs. Nuclear Grade Hafnium

ZA-27 belongs to the zinc alloys classification, while nuclear grade hafnium belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (19, 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 nuclear grade hafnium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 78
78
Elongation at Break, % 2.0 to 4.5
25
Poisson's Ratio 0.27
0.26
Shear Modulus, GPa 31
31
Tensile Strength: Ultimate (UTS), MPa 400 to 430
350
Tensile Strength: Yield (Proof), MPa 260 to 370
170

Thermal Properties

Latent Heat of Fusion, J/g 130
130
Specific Heat Capacity, J/kg-K 530
140
Thermal Expansion, µm/m-K 26
5.9

Otherwise Unclassified Properties

Density, g/cm3 5.0
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.1 to 18
73
Resilience: Unit (Modulus of Resilience), kJ/m3 420 to 890
180
Stiffness to Weight: Axial, points 8.6
3.3
Stiffness to Weight: Bending, points 28
11
Strength to Weight: Axial, points 22 to 24
7.4
Strength to Weight: Bending, points 24 to 25
8.4
Thermal Shock Resistance, points 14 to 15
55

Alloy Composition

Aluminum (Al), % 25 to 28
0
Cadmium (Cd), % 0 to 0.0060
0
Copper (Cu), % 2.0 to 2.5
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 0 to 0.1
0
Lead (Pb), % 0 to 0.0060
0
Magnesium (Mg), % 0.010 to 0.020
0
Nickel (Ni), % 0 to 0.020
0
Silicon (Si), % 0 to 0.080
0
Tin (Sn), % 0 to 0.0030
0
Zinc (Zn), % 69.3 to 73
0
Residuals, % 0
0 to 0.23