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Grade 705C Zirconium vs. Nickel 718

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while nickel 718 belongs to the nickel alloys. There are 20 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is grade 705C zirconium and the bottom bar is nickel 718.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 98
190
Elongation at Break, % 13
12 to 50
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 36
75
Tensile Strength: Ultimate (UTS), MPa 540
930 to 1530
Tensile Strength: Yield (Proof), MPa 390
510 to 1330

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Specific Heat Capacity, J/kg-K 270
450
Thermal Conductivity, W/m-K 18
11
Thermal Expansion, µm/m-K 5.7
13

Otherwise Unclassified Properties

Density, g/cm3 6.7
8.3
Embodied Water, L/kg 450
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
140 to 390
Resilience: Unit (Modulus of Resilience), kJ/m3 790
660 to 4560
Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 22
31 to 51
Strength to Weight: Bending, points 22
25 to 35
Thermal Diffusivity, mm2/s 9.9
3.0
Thermal Shock Resistance, points 69
27 to 44

Alloy Composition

Aluminum (Al), % 0
0.2 to 0.8
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0 to 0.1
0 to 0.080
Chromium (Cr), % 0
17 to 21
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0
0 to 0.3
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
11.1 to 24.6
Manganese (Mn), % 0
0 to 0.35
Molybdenum (Mo), % 0
2.8 to 3.3
Nickel (Ni), % 0
50 to 55
Niobium (Nb), % 2.0 to 3.0
4.8 to 5.5
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.010
0 to 0.015
Silicon (Si), % 0
0 to 0.35
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0.65 to 1.2
Zirconium (Zr), % 91.9 to 98
0