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Class 1 Tungsten vs. Grade 702C Zirconium

Both class 1 tungsten and grade 702C zirconium 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 class 1 tungsten and the bottom bar is grade 702C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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