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Grade 705C Zirconium vs. ACI-ASTM CD4MCu Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while ACI-ASTM CD4MCu steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is grade 705C zirconium and the bottom bar is ACI-ASTM CD4MCu steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 98
200
Elongation at Break, % 13
18
Poisson's Ratio 0.34
0.27
Shear Modulus, GPa 36
79
Tensile Strength: Ultimate (UTS), MPa 540
770
Tensile Strength: Yield (Proof), MPa 390
550

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 18
17
Thermal Expansion, µm/m-K 5.7
13

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 450
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
130
Resilience: Unit (Modulus of Resilience), kJ/m3 790
760
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 22
28
Strength to Weight: Bending, points 22
24
Thermal Diffusivity, mm2/s 9.9
4.5
Thermal Shock Resistance, points 69
21

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.040
Chromium (Cr), % 0
24.5 to 26.5
Copper (Cu), % 0
2.8 to 3.3
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
59.9 to 66.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
1.8 to 2.3
Nickel (Ni), % 0
4.8 to 6.0
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 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.040
Zirconium (Zr), % 91.9 to 98
0