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Type 2 Niobium vs. Z21721 Zinc

Type 2 niobium 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 (9, in this case) are not shown.

For each property being compared, the top bar is Type 2 niobium and the bottom bar is Z21721 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
87
Elongation at Break, % 29
40
Poisson's Ratio 0.4
0.25
Shear Modulus, GPa 38
35
Tensile Strength: Ultimate (UTS), MPa 140
150
Tensile Strength: Yield (Proof), MPa 82
120

Thermal Properties

Latent Heat of Fusion, J/g 320
110
Specific Heat Capacity, J/kg-K 270
390
Thermal Conductivity, W/m-K 52
110
Thermal Expansion, µm/m-K 7.3
26

Otherwise Unclassified Properties

Density, g/cm3 8.6
6.6
Embodied Water, L/kg 160
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 35
57
Resilience: Unit (Modulus of Resilience), kJ/m3 32
88
Stiffness to Weight: Axial, points 6.8
7.3
Stiffness to Weight: Bending, points 18
22
Strength to Weight: Axial, points 4.6
6.4
Strength to Weight: Bending, points 7.1
9.6
Thermal Diffusivity, mm2/s 23
44
Thermal Shock Resistance, points 13
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
Hafnium (Hf), % 0 to 0.020
0
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 0.0050
0
Niobium (Nb), % 99.5 to 100
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.025
0
Silicon (Si), % 0 to 0.0050
0
Tantalum (Ta), % 0 to 0.3
0
Titanium (Ti), % 0 to 0.030
0 to 0.020
Tungsten (W), % 0 to 0.050
0
Zinc (Zn), % 0
98.9 to 100
Zirconium (Zr), % 0 to 0.020
0