AWS BVAg-18 vs. R30605 Cobalt

AWS BVAg-18 belongs to the otherwise unclassified metals classification, while R30605 cobalt belongs to the cobalt alloys. There are 17 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS BVAg-18 and the bottom bar is R30605 cobalt.

AWS BVAg-18 (P07607) Vacuum Service Filler Metal UNS R30605 (L605, Alloy 25, 2.4964) Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		82
Elastic (Young's, Tensile) Modulus, GPa		210

Poisson's Ratio		0.36
Poisson's Ratio		0.29

Shear Modulus, GPa		30
Shear Modulus, GPa		81

Tensile Strength: Ultimate (UTS), MPa		180
Tensile Strength: Ultimate (UTS), MPa		1130 to 1900

Thermal Properties

Latent Heat of Fusion, J/g		140
Latent Heat of Fusion, J/g		290

Melting Completion (Liquidus), °C		720
Melting Completion (Liquidus), °C		1410

Melting Onset (Solidus), °C		600
Melting Onset (Solidus), °C		1330

Specific Heat Capacity, J/kg-K		280
Specific Heat Capacity, J/kg-K		410

Thermal Expansion, µm/m-K		19
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		9.7
Density, g/cm³		9.6

Embodied Carbon, kg CO₂/kg material		59
Embodied Carbon, kg CO₂/kg material		9.8

Embodied Energy, MJ/kg		930
Embodied Energy, MJ/kg		140

Common Calculations

Stiffness to Weight: Axial, points		4.7
Stiffness to Weight: Axial, points		12

Stiffness to Weight: Bending, points		15
Stiffness to Weight: Bending, points		21

Strength to Weight: Axial, points		5.1
Strength to Weight: Axial, points		33 to 55

Strength to Weight: Bending, points		7.3
Strength to Weight: Bending, points		25 to 36

Thermal Shock Resistance, points		8.1
Thermal Shock Resistance, points		31 to 52

Alloy Composition

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

Carbon (C), %		0 to 0.0050
Carbon (C), %		0.050 to 0.15

Chromium (Cr), %		0
Chromium (Cr), %		19 to 21

Cobalt (Co), %		0
Cobalt (Co), %		46.4 to 57

Copper (Cu), %		28.5 to 31.5
Copper (Cu), %		0

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

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

Manganese (Mn), %		0
Manganese (Mn), %		1.0 to 2.0

Nickel (Ni), %		0
Nickel (Ni), %		9.0 to 11

Phosphorus (P), %		0 to 0.0020
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		0
Silicon (Si), %		0 to 0.4

Silver (Ag), %		59 to 61
Silver (Ag), %		0

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

Tin (Sn), %		9.5 to 10.5
Tin (Sn), %		0

Tungsten (W), %		0
Tungsten (W), %		14 to 16

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