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Grade 705C Zirconium vs. ASTM B780 Alloy

Both grade 705C zirconium and ASTM B780 alloy are otherwise unclassified metals. There are 14 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 ASTM B780 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 98
83
Elongation at Break, % 13
1.1 to 9.1
Poisson's Ratio 0.34
0.36
Shear Modulus, GPa 36
30
Tensile Strength: Ultimate (UTS), MPa 540
330 to 590

Thermal Properties

Latent Heat of Fusion, J/g 250
140
Specific Heat Capacity, J/kg-K 270
270
Thermal Expansion, µm/m-K 5.7
18

Otherwise Unclassified Properties

Density, g/cm3 6.7
10

Common Calculations

Stiffness to Weight: Axial, points 8.1
4.5
Stiffness to Weight: Bending, points 23
14
Strength to Weight: Axial, points 22
9.1 to 16
Strength to Weight: Bending, points 22
11 to 15
Thermal Shock Resistance, points 69
16 to 29

Alloy Composition

Cadmium (Cd), % 0
0 to 0.050
Carbon (C), % 0 to 0.1
0
Copper (Cu), % 0
23.5 to 25.7
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Nickel (Ni), % 0
0.35 to 0.65
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
Silver (Ag), % 0
74 to 76
Zinc (Zn), % 0
0 to 0.060
Zirconium (Zr), % 91.9 to 98
0