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Grade 702C Zirconium vs. AWS ERTi-7

Grade 702C zirconium belongs to the otherwise unclassified metals classification, while AWS ERTi-7 belongs to the titanium alloys. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is grade 702C zirconium and the bottom bar is AWS ERTi-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 97
110
Elongation at Break, % 13
20
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 36
40
Tensile Strength: Ultimate (UTS), MPa 430
340
Tensile Strength: Yield (Proof), MPa 310
280

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Specific Heat Capacity, J/kg-K 270
540
Thermal Conductivity, W/m-K 22
21
Thermal Expansion, µm/m-K 5.7
8.7

Otherwise Unclassified Properties

Density, g/cm3 6.7
4.5
Embodied Water, L/kg 450
470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
64
Resilience: Unit (Modulus of Resilience), kJ/m3 510
360
Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 18
21
Strength to Weight: Bending, points 19
24
Thermal Diffusivity, mm2/s 12
8.8
Thermal Shock Resistance, points 55
26

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0 to 0.0080
Iron (Fe), % 0 to 0.3
0 to 0.12
Nitrogen (N), % 0 to 0.030
0 to 0.015
Oxygen (O), % 0 to 0.25
0.080 to 0.16
Palladium (Pd), % 0
0.12 to 0.25
Phosphorus (P), % 0 to 0.010
0
Titanium (Ti), % 0
99.417 to 99.8
Zirconium (Zr), % 94.8 to 100
0