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AWS BAu-4 vs. C19800 Copper

AWS BAu-4 belongs to the otherwise unclassified metals classification, while C19800 copper belongs to the copper alloys. There are 15 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is AWS BAu-4 and the bottom bar is C19800 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Poisson's Ratio 0.4
0.34
Shear Modulus, GPa 41
43
Tensile Strength: Ultimate (UTS), MPa 200
430 to 550

Thermal Properties

Latent Heat of Fusion, J/g 100
210
Melting Completion (Liquidus), °C 950
1070
Melting Onset (Solidus), °C 950
1050
Specific Heat Capacity, J/kg-K 190
390
Thermal Expansion, µm/m-K 14
18

Otherwise Unclassified Properties

Density, g/cm3 17
8.9

Common Calculations

Stiffness to Weight: Axial, points 3.6
7.2
Stiffness to Weight: Bending, points 9.3
18
Strength to Weight: Axial, points 3.2
14 to 17
Strength to Weight: Bending, points 4.4
14 to 17
Thermal Shock Resistance, points 9.2
15 to 20

Alloy Composition

Copper (Cu), % 0
95.7 to 99.47
Gold (Au), % 81.5 to 82.5
0
Iron (Fe), % 0
0.020 to 0.5
Magnesium (Mg), % 0
0.1 to 1.0
Nickel (Ni), % 17.4 to 18.5
0
Phosphorus (P), % 0
0.010 to 0.1
Tin (Sn), % 0
0.1 to 1.0
Zinc (Zn), % 0
0.3 to 1.5
Residuals, % 0
0 to 0.2