Grade 704C Zirconium vs. AWS E630

Grade 704C zirconium belongs to the otherwise unclassified metals classification, while AWS E630 belongs to the iron alloys. There are 17 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 704C zirconium and the bottom bar is AWS E630.

Grade 704C Cast Zirconium AWS E630 (W37410) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		97
Elastic (Young's, Tensile) Modulus, GPa		190

Elongation at Break, %		11
Elongation at Break, %		8.0

Poisson's Ratio		0.34
Poisson's Ratio		0.28

Shear Modulus, GPa		36
Shear Modulus, GPa		76

Tensile Strength: Ultimate (UTS), MPa		470
Tensile Strength: Ultimate (UTS), MPa		1040

Thermal Properties

Latent Heat of Fusion, J/g		240
Latent Heat of Fusion, J/g		280

Specific Heat Capacity, J/kg-K		270
Specific Heat Capacity, J/kg-K		470

Thermal Conductivity, W/m-K		21
Thermal Conductivity, W/m-K		17

Thermal Expansion, µm/m-K		5.9
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Density, g/cm³		6.7
Density, g/cm³		7.8

Embodied Water, L/kg		460
Embodied Water, L/kg		140

Common Calculations

Stiffness to Weight: Axial, points		8.1
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		23
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		20
Strength to Weight: Axial, points		37

Strength to Weight: Bending, points		20
Strength to Weight: Bending, points		29

Thermal Diffusivity, mm²/s		12
Thermal Diffusivity, mm²/s		4.5

Thermal Shock Resistance, points		58
Thermal Shock Resistance, points		28

Alloy Composition

Carbon (C), %		0 to 0.1
Carbon (C), %		0 to 0.050

Chromium (Cr), %		0
Chromium (Cr), %		16 to 16.8

Copper (Cu), %		0
Copper (Cu), %		3.3 to 4.0

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), %		71.6 to 75.9

Manganese (Mn), %		0
Manganese (Mn), %		0.25 to 0.75

Molybdenum (Mo), %		0
Molybdenum (Mo), %		0 to 0.75

Nickel (Ni), %		0
Nickel (Ni), %		4.5 to 5.0

Niobium (Nb), %		0
Niobium (Nb), %		0.15 to 0.3

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), %		0 to 0.040

Silicon (Si), %		0
Silicon (Si), %		0 to 0.75

Sulfur (S), %		0
Sulfur (S), %		0 to 0.030

Tin (Sn), %		1.0 to 2.0
Tin (Sn), %		0

Zirconium (Zr), %		92.9 to 99
Zirconium (Zr), %		0