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Grade 702C Zirconium vs. Class 1 Tungsten

Both grade 702C zirconium and class 1 tungsten are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. There are 20 material properties with values for both materials. Properties with values for just one material (7, 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 class 1 tungsten.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 97
250
Elongation at Break, % 13
5.7
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 36
98
Tensile Strength: Ultimate (UTS), MPa 430
860
Tensile Strength: Yield (Proof), MPa 310
580

Thermal Properties

Latent Heat of Fusion, J/g 250
160
Specific Heat Capacity, J/kg-K 270
120
Thermal Conductivity, W/m-K 22
21
Thermal Expansion, µm/m-K 5.7
5.1

Otherwise Unclassified Properties

Density, g/cm3 6.7
15
Embodied Water, L/kg 450
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
44
Resilience: Unit (Modulus of Resilience), kJ/m3 510
660
Stiffness to Weight: Axial, points 8.1
9.6
Stiffness to Weight: Bending, points 23
14
Strength to Weight: Axial, points 18
16
Strength to Weight: Bending, points 19
14
Thermal Diffusivity, mm2/s 12
12
Thermal Shock Resistance, points 55
48

Alloy Composition


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Carbon (C), % 0 to 0.1
0
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.010
0
Tungsten (W), % 0
90
Zirconium (Zr), % 94.8 to 100
0
Residuals, % 0
10