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Grade 705C Zirconium vs. Ductile Cast Iron

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while ductile cast iron belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is grade 705C zirconium and the bottom bar is ductile cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
160 to 310
Elastic (Young's, Tensile) Modulus, GPa 98
170 to 180
Elongation at Break, % 13
2.1 to 20
Poisson's Ratio 0.34
0.28 to 0.31
Shear Modulus, GPa 36
64 to 70
Tensile Strength: Ultimate (UTS), MPa 540
460 to 920
Tensile Strength: Yield (Proof), MPa 390
310 to 670

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Specific Heat Capacity, J/kg-K 270
490
Thermal Conductivity, W/m-K 18
31 to 36
Thermal Expansion, µm/m-K 5.7
11

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.1 to 7.5
Embodied Water, L/kg 450
43

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
17 to 80
Resilience: Unit (Modulus of Resilience), kJ/m3 790
280 to 1330
Stiffness to Weight: Axial, points 8.1
12 to 14
Stiffness to Weight: Bending, points 23
24 to 26
Strength to Weight: Axial, points 22
17 to 35
Strength to Weight: Bending, points 22
18 to 29
Thermal Diffusivity, mm2/s 9.9
8.9 to 10
Thermal Shock Resistance, points 69
17 to 35

Alloy Composition

Carbon (C), % 0 to 0.1
3.0 to 3.5
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
93.7 to 95.5
Niobium (Nb), % 2.0 to 3.0
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.010
0 to 0.080
Silicon (Si), % 0
1.5 to 2.8
Zirconium (Zr), % 91.9 to 98
0