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Grade 705C Zirconium vs. Type 2 Niobium

Both grade 705C zirconium and Type 2 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 705C zirconium and the bottom bar is Type 2 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
110
Elastic (Young's, Tensile) Modulus, GPa 98
110
Elongation at Break, % 13
29
Poisson's Ratio 0.34
0.4
Shear Modulus, GPa 36
38
Tensile Strength: Ultimate (UTS), MPa 540
140
Tensile Strength: Yield (Proof), MPa 390
82

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Specific Heat Capacity, J/kg-K 270
270
Thermal Conductivity, W/m-K 18
52
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 66
35
Resilience: Unit (Modulus of Resilience), kJ/m3 790
32
Stiffness to Weight: Axial, points 8.1
6.8
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 22
4.6
Strength to Weight: Bending, points 22
7.1
Thermal Diffusivity, mm2/s 9.9
23
Thermal Shock Resistance, points 69
13

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 0.010
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0
0 to 0.0050
Niobium (Nb), % 2.0 to 3.0
99.5 to 100
Nitrogen (N), % 0 to 0.030
0 to 0.010
Oxygen (O), % 0 to 0.3
0 to 0.025
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0
0 to 0.0050
Tantalum (Ta), % 0
0 to 0.3
Titanium (Ti), % 0
0 to 0.030
Tungsten (W), % 0
0 to 0.050
Zirconium (Zr), % 91.9 to 98
0 to 0.020