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AWS BVAu-4 vs. C84400 Valve Metal

AWS BVAu-4 belongs to the otherwise unclassified metals classification, while C84400 valve metal belongs to the copper alloys. 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 BVAu-4 and the bottom bar is C84400 valve metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Poisson's Ratio 0.4
0.34
Shear Modulus, GPa 41
39
Tensile Strength: Ultimate (UTS), MPa 190
230

Thermal Properties

Latent Heat of Fusion, J/g 100
180
Melting Completion (Liquidus), °C 950
1000
Melting Onset (Solidus), °C 950
840
Specific Heat Capacity, J/kg-K 190
370
Thermal Expansion, µm/m-K 14
19

Otherwise Unclassified Properties

Density, g/cm3 17
8.8

Common Calculations

Stiffness to Weight: Axial, points 3.6
6.6
Stiffness to Weight: Bending, points 9.3
18
Strength to Weight: Axial, points 3.0
7.2
Strength to Weight: Bending, points 4.2
9.4
Thermal Shock Resistance, points 8.7
8.3

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0
Copper (Cu), % 0
78 to 82
Gold (Au), % 81.5 to 82.5
0
Iron (Fe), % 0
0 to 0.4
Lead (Pb), % 0 to 0.0020
6.0 to 8.0
Nickel (Ni), % 17.5 to 18.5
0 to 1.0
Phosphorus (P), % 0 to 0.0020
0 to 1.5
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.3 to 3.5
Zinc (Zn), % 0 to 0.0010
7.0 to 10
Residuals, % 0
0 to 0.7