Grade 705C Zirconium vs. AWS BNi-7

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while AWS BNi-7 belongs to the nickel alloys. There are 14 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is grade 705C zirconium and the bottom bar is AWS BNi-7.

Grade 705C Cast Zirconium AWS BNi-7 (N99710) Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		98
Elastic (Young's, Tensile) Modulus, GPa		170

Poisson's Ratio		0.34
Poisson's Ratio		0.3

Shear Modulus, GPa		36
Shear Modulus, GPa		67

Tensile Strength: Ultimate (UTS), MPa		540
Tensile Strength: Ultimate (UTS), MPa		550

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		280

Specific Heat Capacity, J/kg-K		270
Specific Heat Capacity, J/kg-K		490

Thermal Expansion, µm/m-K		5.7
Thermal Expansion, µm/m-K		11

Otherwise Unclassified Properties

Density, g/cm³		6.7
Density, g/cm³		8.0

Embodied Water, L/kg		450
Embodied Water, L/kg		240

Common Calculations

Stiffness to Weight: Axial, points		8.1
Stiffness to Weight: Axial, points		12

Stiffness to Weight: Bending, points		23
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		22
Strength to Weight: Axial, points		19

Strength to Weight: Bending, points		22
Strength to Weight: Bending, points		19

Thermal Shock Resistance, points		69
Thermal Shock Resistance, points		21

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.050

Boron (B), %		0
Boron (B), %		0 to 0.010

Carbon (C), %		0 to 0.1
Carbon (C), %		0 to 0.060

Chromium (Cr), %		0
Chromium (Cr), %		13 to 15

Cobalt (Co), %		0
Cobalt (Co), %		0 to 0.1

Hafnium (Hf), %		0 to 4.5
Hafnium (Hf), %		0

Hydrogen (H), %		0 to 0.0050
Hydrogen (H), %		0

Iron (Fe), %		0 to 0.3
Iron (Fe), %		0 to 0.2

Manganese (Mn), %		0
Manganese (Mn), %		0 to 0.040

Nickel (Ni), %		0
Nickel (Ni), %		73.3 to 77.3

Niobium (Nb), %		2.0 to 3.0
Niobium (Nb), %		0

Nitrogen (N), %		0 to 0.030
Nitrogen (N), %		0

Oxygen (O), %		0 to 0.3
Oxygen (O), %		0

Phosphorus (P), %		0 to 0.010
Phosphorus (P), %		9.7 to 10.5

Selenium (Se), %		0
Selenium (Se), %		0 to 0.0050

Silicon (Si), %		0
Silicon (Si), %		0 to 0.1

Sulfur (S), %		0
Sulfur (S), %		0 to 0.020

Titanium (Ti), %		0
Titanium (Ti), %		0 to 0.050

Zirconium (Zr), %		91.9 to 98
Zirconium (Zr), %		0 to 0.050

Residuals, %		0
Residuals, %		0 to 0.5