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AWS BAg-9 vs. C55281 Copper

AWS BAg-9 belongs to the otherwise unclassified metals classification, while C55281 copper belongs to the copper alloys. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 17 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-9 and the bottom bar is C55281 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 82
110
Poisson's Ratio 0.35
0.34
Shear Modulus, GPa 31
40
Tensile Strength: Ultimate (UTS), MPa 140
190

Thermal Properties

Brazing Temperature, °C 720 to 840
720 to 820
Latent Heat of Fusion, J/g 130
190
Melting Completion (Liquidus), °C 720
810
Melting Onset (Solidus), °C 670
640
Specific Heat Capacity, J/kg-K 290
400
Thermal Expansion, µm/m-K 20
16

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.7
Embodied Energy, MJ/kg 980
110

Common Calculations

Stiffness to Weight: Axial, points 4.8
6.9
Stiffness to Weight: Bending, points 15
18
Strength to Weight: Axial, points 4.1
6.1
Strength to Weight: Bending, points 6.3
8.5
Thermal Shock Resistance, points 6.0
7.7

Alloy Composition


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Copper (Cu), % 19 to 21
88.5 to 89.4
Phosphorus (P), % 0
5.8 to 6.2
Silver (Ag), % 64 to 66
4.8 to 5.2
Zinc (Zn), % 13 to 17
0
Residuals, % 0 to 0.15
0 to 0.15