AWS BVAg-29 vs. C84400 Valve Metal

AWS BVAg-29 belongs to the otherwise unclassified metals classification, while C84400 valve metal belongs to the copper alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. There are 15 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 AWS BVAg-29 and the bottom bar is C84400 valve metal.

AWS BVAg-29 (P07627) Vacuum Service Filler Metal UNS C84400 (Alloy 5A) Valve Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		73
Elastic (Young's, Tensile) Modulus, GPa		100

Poisson's Ratio		0.37
Poisson's Ratio		0.34

Shear Modulus, GPa		27
Shear Modulus, GPa		39

Tensile Strength: Ultimate (UTS), MPa		180
Tensile Strength: Ultimate (UTS), MPa		230

Thermal Properties

Latent Heat of Fusion, J/g		120
Latent Heat of Fusion, J/g		180

Melting Completion (Liquidus), °C		710
Melting Completion (Liquidus), °C		1000

Melting Onset (Solidus), °C		620
Melting Onset (Solidus), °C		840

Specific Heat Capacity, J/kg-K		270
Specific Heat Capacity, J/kg-K		370

Thermal Expansion, µm/m-K		20
Thermal Expansion, µm/m-K		19

Otherwise Unclassified Properties

Density, g/cm³		9.7
Density, g/cm³		8.8

Common Calculations

Stiffness to Weight: Axial, points		4.2
Stiffness to Weight: Axial, points		6.6

Stiffness to Weight: Bending, points		14
Stiffness to Weight: Bending, points		18

Strength to Weight: Axial, points		5.2
Strength to Weight: Axial, points		7.2

Strength to Weight: Bending, points		7.3
Strength to Weight: Bending, points		9.4

Thermal Shock Resistance, points		8.8
Thermal Shock Resistance, points		8.3

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.0050

Antimony (Sb), %		0
Antimony (Sb), %		0 to 0.25

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

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

Copper (Cu), %		22.5 to 25.5
Copper (Cu), %		78 to 82

Indium (In), %		14 to 15
Indium (In), %		0

Iron (Fe), %		0
Iron (Fe), %		0 to 0.4

Lead (Pb), %		0 to 0.0020
Lead (Pb), %		6.0 to 8.0

Nickel (Ni), %		0
Nickel (Ni), %		0 to 1.0

Phosphorus (P), %		0 to 0.0020
Phosphorus (P), %		0 to 1.5

Silicon (Si), %		0
Silicon (Si), %		0 to 0.0050

Silver (Ag), %		60.5 to 62.5
Silver (Ag), %		0

Sulfur (S), %		0
Sulfur (S), %		0 to 0.080

Tin (Sn), %		0
Tin (Sn), %		2.3 to 3.5

Zinc (Zn), %		0 to 0.0010
Zinc (Zn), %		7.0 to 10

Residuals, %		0
Residuals, %		0 to 0.7