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Grade 702C Zirconium vs. Type 3 Niobium

Both grade 702C zirconium and Type 3 niobium are otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is grade 702C zirconium and the bottom bar is Type 3 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
110
Elastic (Young's, Tensile) Modulus, GPa 97
100
Elongation at Break, % 13
23
Poisson's Ratio 0.34
0.4
Shear Modulus, GPa 36
38
Tensile Strength: Ultimate (UTS), MPa 430
220
Tensile Strength: Yield (Proof), MPa 310
140

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Specific Heat Capacity, J/kg-K 270
270
Thermal Conductivity, W/m-K 22
42
Thermal Expansion, µm/m-K 5.7
7.3

Otherwise Unclassified Properties

Density, g/cm3 6.7
8.6
Embodied Water, L/kg 450
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
44
Resilience: Unit (Modulus of Resilience), kJ/m3 510
93
Stiffness to Weight: Axial, points 8.1
6.8
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 18
7.2
Strength to Weight: Bending, points 19
9.5
Thermal Diffusivity, mm2/s 12
18
Thermal Shock Resistance, points 55
21

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.010
Hafnium (Hf), % 0 to 4.5
0 to 0.020
Hydrogen (H), % 0 to 0.0050
0 to 0.0015
Iron (Fe), % 0 to 0.3
0 to 0.0050
Molybdenum (Mo), % 0
0 to 0.010
Nickel (Ni), % 0
0 to 0.0050
Niobium (Nb), % 0
98.6 to 99.2
Nitrogen (N), % 0 to 0.030
0 to 0.010
Oxygen (O), % 0 to 0.25
0 to 0.015
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0
0 to 0.0050
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 0
0 to 0.030
Zirconium (Zr), % 94.8 to 100
0.8 to 1.2