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Grade 702C Zirconium vs. R05400 Tantalum

Both grade 702C zirconium and R05400 tantalum are otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (2, 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 grade 702C zirconium and the bottom bar is R05400 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 97
190
Elongation at Break, % 13
1.1 to 28
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 36
69
Tensile Strength: Ultimate (UTS), MPa 430
210 to 540
Tensile Strength: Yield (Proof), MPa 310
140 to 390

Thermal Properties

Latent Heat of Fusion, J/g 250
140
Specific Heat Capacity, J/kg-K 270
140
Thermal Conductivity, W/m-K 22
59
Thermal Expansion, µm/m-K 5.7
6.5

Otherwise Unclassified Properties

Density, g/cm3 6.7
17
Embodied Water, L/kg 450
650

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
5.5 to 53
Resilience: Unit (Modulus of Resilience), kJ/m3 510
50 to 420
Stiffness to Weight: Axial, points 8.1
6.2
Stiffness to Weight: Bending, points 23
11
Strength to Weight: Axial, points 18
3.6 to 9.0
Strength to Weight: Bending, points 19
4.8 to 8.8
Thermal Diffusivity, mm2/s 12
25
Thermal Shock Resistance, points 55
13 to 32

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.010
Hafnium (Hf), % 0 to 4.5
0
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 0.010
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0 to 0.030
0 to 0.010
Oxygen (O), % 0 to 0.25
0 to 0.030
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0
0 to 0.0050
Tantalum (Ta), % 0
99.7 to 100
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Zirconium (Zr), % 94.8 to 100
0