AWS BVAu-7 vs. R31233 Cobalt

AWS BVAu-7 belongs to the otherwise unclassified metals classification, while R31233 cobalt belongs to the cobalt alloys. There are 15 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 AWS BVAu-7 and the bottom bar is R31233 cobalt.

AWS BVAu-7 (P00507) Vacuum Service Filler Metal UNS R31233 Cobalt

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		130
Elastic (Young's, Tensile) Modulus, GPa		220

Poisson's Ratio		0.38
Poisson's Ratio		0.29

Shear Modulus, GPa		45
Shear Modulus, GPa		85

Tensile Strength: Ultimate (UTS), MPa		200
Tensile Strength: Ultimate (UTS), MPa		1020

Thermal Properties

Latent Heat of Fusion, J/g		140
Latent Heat of Fusion, J/g		320

Melting Completion (Liquidus), °C		1120
Melting Completion (Liquidus), °C		1350

Melting Onset (Solidus), °C		1100
Melting Onset (Solidus), °C		1330

Specific Heat Capacity, J/kg-K		240
Specific Heat Capacity, J/kg-K		440

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		13

Otherwise Unclassified Properties

Density, g/cm³		15
Density, g/cm³		8.6

Common Calculations

Stiffness to Weight: Axial, points		4.7
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		11
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		3.7
Strength to Weight: Axial, points		33

Strength to Weight: Bending, points		5.1
Strength to Weight: Bending, points		26

Thermal Shock Resistance, points		8.9
Thermal Shock Resistance, points		25

Alloy Composition

Boron (B), %		0
Boron (B), %		0 to 0.015

Cadmium (Cd), %		0 to 0.0010
Cadmium (Cd), %		0

Carbon (C), %		0 to 0.0050
Carbon (C), %		0.020 to 0.1

Chromium (Cr), %		0
Chromium (Cr), %		23.5 to 27.5

Cobalt (Co), %		0 to 0.060
Cobalt (Co), %		44.7 to 63.3

Gold (Au), %		49.5 to 50.5
Gold (Au), %		0

Iron (Fe), %		0
Iron (Fe), %		1.0 to 5.0

Lead (Pb), %		0 to 0.0020
Lead (Pb), %		0

Manganese (Mn), %		0
Manganese (Mn), %		0.1 to 1.5

Molybdenum (Mo), %		0
Molybdenum (Mo), %		4.0 to 6.0

Nickel (Ni), %		24.5 to 25.5
Nickel (Ni), %		7.0 to 11

Nitrogen (N), %		0
Nitrogen (N), %		0.030 to 0.12

Palladium (Pd), %		23.9 to 26
Palladium (Pd), %		0

Phosphorus (P), %		0 to 0.0020
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0
Silicon (Si), %		0.050 to 1.0

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

Tungsten (W), %		0
Tungsten (W), %		1.0 to 3.0

Zinc (Zn), %		0 to 0.0010
Zinc (Zn), %		0