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R05255 Alloy vs. ZA-12

R05255 alloy belongs to the otherwise unclassified metals classification, while ZA-12 belongs to the zinc alloys. 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 R05255 alloy and the bottom bar is ZA-12.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
83
Elongation at Break, % 20
1.6 to 5.3
Poisson's Ratio 0.34
0.26
Shear Modulus, GPa 70
33
Tensile Strength: Ultimate (UTS), MPa 540
260 to 400
Tensile Strength: Yield (Proof), MPa 450
210 to 320

Thermal Properties

Latent Heat of Fusion, J/g 140
120
Specific Heat Capacity, J/kg-K 140
450
Thermal Conductivity, W/m-K 59
120
Thermal Expansion, µm/m-K 6.6
24

Otherwise Unclassified Properties

Density, g/cm3 17
6.0
Embodied Water, L/kg 630
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
4.0 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 530
260 to 620
Stiffness to Weight: Axial, points 6.3
7.6
Stiffness to Weight: Bending, points 11
24
Strength to Weight: Axial, points 9.1
12 to 19
Strength to Weight: Bending, points 8.9
15 to 20
Thermal Diffusivity, mm2/s 25
43
Thermal Shock Resistance, points 31
9.4 to 14

Alloy Composition

Aluminum (Al), % 0
10.5 to 11.5
Cadmium (Cd), % 0
0 to 0.0060
Carbon (C), % 0 to 0.010
0
Copper (Cu), % 0
0.5 to 1.2
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
0 to 0.075
Lead (Pb), % 0
0 to 0.0060
Magnesium (Mg), % 0
0.015 to 0.030
Molybdenum (Mo), % 0 to 0.020
0
Nickel (Ni), % 0 to 0.010
0 to 0.020
Niobium (Nb), % 0 to 0.5
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.015
0
Silicon (Si), % 0 to 0.0050
0 to 0.060
Tantalum (Ta), % 95.9 to 98
0
Tin (Sn), % 0
0 to 0.0030
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0
87.1 to 89