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AWS BAu-2 vs. C91700 Bronze

AWS BAu-2 belongs to the otherwise unclassified metals classification, while C91700 bronze 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-2 and the bottom bar is C91700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Poisson's Ratio 0.4
0.34
Shear Modulus, GPa 36
41
Tensile Strength: Ultimate (UTS), MPa 150
330

Thermal Properties

Latent Heat of Fusion, J/g 92
190
Melting Completion (Liquidus), °C 890
1020
Melting Onset (Solidus), °C 890
850
Specific Heat Capacity, J/kg-K 180
370
Thermal Expansion, µm/m-K 15
18

Otherwise Unclassified Properties

Density, g/cm3 17
8.7

Common Calculations

Stiffness to Weight: Axial, points 3.3
6.9
Stiffness to Weight: Bending, points 9.1
18
Strength to Weight: Axial, points 2.4
11
Strength to Weight: Bending, points 3.6
12
Thermal Shock Resistance, points 7.1
12

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Copper (Cu), % 19.4 to 20.5
84.2 to 87.5
Gold (Au), % 79.5 to 80.5
0
Iron (Fe), % 0
0 to 0.2
Lead (Pb), % 0
0 to 0.25
Nickel (Ni), % 0
1.2 to 2.0
Phosphorus (P), % 0
0 to 0.3
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
11.3 to 12.5
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0 to 0.15
0