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AWS BAu-1 vs. C55280 Copper

AWS BAu-1 belongs to the otherwise unclassified metals classification, while C55280 copper belongs to the copper alloys. They have 63% of their average alloy composition in common. There are 16 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AWS BAu-1 and the bottom bar is C55280 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Poisson's Ratio 0.37
0.34
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 210
180

Thermal Properties

Brazing Temperature, °C 1020 to 1090
730 to 820
Latent Heat of Fusion, J/g 150
190
Melting Completion (Liquidus), °C 1020
790
Melting Onset (Solidus), °C 990
640
Specific Heat Capacity, J/kg-K 290
410
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Density, g/cm3 13
8.5

Common Calculations

Stiffness to Weight: Axial, points 4.7
6.9
Stiffness to Weight: Bending, points 12
19
Strength to Weight: Axial, points 4.5
5.9
Strength to Weight: Bending, points 6.1
8.3
Thermal Shock Resistance, points 8.5
7.4

Alloy Composition

Copper (Cu), % 61.9 to 63
90.5 to 91.4
Gold (Au), % 37 to 38
0
Phosphorus (P), % 0
6.8 to 7.2
Silver (Ag), % 0
1.8 to 2.2
Residuals, % 0
0 to 0.15