AWS BNi-3 vs. R30012 Cobalt

AWS BNi-3 belongs to the nickel alloys classification, while R30012 cobalt belongs to the cobalt alloys. There are 18 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 BNi-3 and the bottom bar is R30012 cobalt.

AWS BNi-3 (N99630) Filler Metal UNS R30012 Co-Cr-W Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		170
Elastic (Young's, Tensile) Modulus, GPa		220

Poisson's Ratio		0.31
Poisson's Ratio		0.28

Shear Modulus, GPa		66
Shear Modulus, GPa		86

Tensile Strength: Ultimate (UTS), MPa		430
Tensile Strength: Ultimate (UTS), MPa		830

Thermal Properties

Latent Heat of Fusion, J/g		350
Latent Heat of Fusion, J/g		320

Melting Completion (Liquidus), °C		1040
Melting Completion (Liquidus), °C		1470

Melting Onset (Solidus), °C		980
Melting Onset (Solidus), °C		1280

Specific Heat Capacity, J/kg-K		480
Specific Heat Capacity, J/kg-K		440

Thermal Expansion, µm/m-K		10
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		8.3
Density, g/cm³		8.8

Embodied Carbon, kg CO₂/kg material		9.9
Embodied Carbon, kg CO₂/kg material		8.3

Embodied Energy, MJ/kg		140
Embodied Energy, MJ/kg		120

Embodied Water, L/kg		220
Embodied Water, L/kg		480

Common Calculations

Stiffness to Weight: Axial, points		12
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		22
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		14
Strength to Weight: Axial, points		26

Strength to Weight: Bending, points		15
Strength to Weight: Bending, points		22

Thermal Shock Resistance, points		17
Thermal Shock Resistance, points		23

Alloy Composition

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

Boron (B), %		2.8 to 3.5
Boron (B), %		0

Carbon (C), %		0 to 0.060
Carbon (C), %		1.4 to 2.0

Chromium (Cr), %		0
Chromium (Cr), %		27 to 32

Cobalt (Co), %		0 to 0.1
Cobalt (Co), %		47.5 to 64.1

Iron (Fe), %		0 to 0.5
Iron (Fe), %		0 to 3.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		0 to 1.0

Nickel (Ni), %		90.1 to 93.3
Nickel (Ni), %		0 to 3.0

Phosphorus (P), %		0 to 0.020
Phosphorus (P), %		0

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

Silicon (Si), %		4.0 to 5.0
Silicon (Si), %		0 to 2.0

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

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

Tungsten (W), %		0
Tungsten (W), %		7.5 to 9.5

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

Residuals, %		0 to 0.5
Residuals, %		0