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R05200 Tantalum vs. Z21721 Zinc

R05200 tantalum belongs to the otherwise unclassified metals classification, while Z21721 zinc belongs to the zinc alloys. There are 20 material properties with values for both materials. Properties with values for just one material (8, 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 R05200 tantalum and the bottom bar is Z21721 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
87
Elongation at Break, % 1.1 to 28
40
Poisson's Ratio 0.34
0.25
Shear Modulus, GPa 69
35
Tensile Strength: Ultimate (UTS), MPa 210 to 540
150
Tensile Strength: Yield (Proof), MPa 140 to 390
120

Thermal Properties

Latent Heat of Fusion, J/g 140
110
Specific Heat Capacity, J/kg-K 140
390
Thermal Conductivity, W/m-K 59
110
Thermal Expansion, µm/m-K 6.5
26

Otherwise Unclassified Properties

Density, g/cm3 17
6.6
Embodied Water, L/kg 650
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5 to 53
57
Resilience: Unit (Modulus of Resilience), kJ/m3 50 to 420
88
Stiffness to Weight: Axial, points 6.2
7.3
Stiffness to Weight: Bending, points 11
22
Strength to Weight: Axial, points 3.6 to 9.0
6.4
Strength to Weight: Bending, points 4.8 to 8.8
9.6
Thermal Diffusivity, mm2/s 25
44
Thermal Shock Resistance, points 13 to 32
4.8

Alloy Composition

Aluminum (Al), % 0
0 to 0.0020
Cadmium (Cd), % 0
0 to 0.070
Carbon (C), % 0 to 0.010
0
Copper (Cu), % 0
0 to 0.0050
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
0 to 0.010
Lead (Pb), % 0
0 to 1.0
Molybdenum (Mo), % 0 to 0.020
0
Nickel (Ni), % 0 to 0.010
0
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.015
0
Silicon (Si), % 0 to 0.0050
0
Tantalum (Ta), % 99.8 to 100
0
Titanium (Ti), % 0 to 0.010
0 to 0.020
Tungsten (W), % 0 to 0.050
0
Zinc (Zn), % 0
98.9 to 100