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AWS BAu-4 vs. C95800 Bronze

AWS BAu-4 belongs to the otherwise unclassified metals classification, while C95800 bronze 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. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AWS BAu-4 and the bottom bar is C95800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Poisson's Ratio 0.4
0.34
Shear Modulus, GPa 41
44
Tensile Strength: Ultimate (UTS), MPa 200
660

Thermal Properties

Latent Heat of Fusion, J/g 100
230
Melting Completion (Liquidus), °C 950
1060
Melting Onset (Solidus), °C 950
1040
Specific Heat Capacity, J/kg-K 190
440
Thermal Expansion, µm/m-K 14
17

Otherwise Unclassified Properties

Density, g/cm3 17
8.3

Common Calculations

Stiffness to Weight: Axial, points 3.6
7.9
Stiffness to Weight: Bending, points 9.3
20
Strength to Weight: Axial, points 3.2
22
Strength to Weight: Bending, points 4.4
20
Thermal Shock Resistance, points 9.2
23

Alloy Composition

Aluminum (Al), % 0
8.5 to 9.5
Copper (Cu), % 0
79 to 83.2
Gold (Au), % 81.5 to 82.5
0
Iron (Fe), % 0
3.5 to 4.5
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0
0.8 to 1.5
Nickel (Ni), % 17.4 to 18.5
4.0 to 5.0
Silicon (Si), % 0
0 to 0.1
Residuals, % 0
0 to 0.5