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AWS BAg-8a vs. AWS BAu-5

Both AWS BAg-8a and AWS BAu-5 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition.

For each property being compared, the top bar is AWS BAg-8a and the bottom bar is AWS BAu-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
140
Poisson's Ratio 0.36
0.37
Shear Modulus, GPa 31
50
Tensile Strength: Ultimate (UTS), MPa 150
210

Thermal Properties

Brazing Temperature, °C 720 to 870
1170 to 1230
Latent Heat of Fusion, J/g 140
180
Melting Completion (Liquidus), °C 770
1170
Melting Onset (Solidus), °C 770
1140
Specific Heat Capacity, J/kg-K 290
280
Thermal Expansion, µm/m-K 19
12

Otherwise Unclassified Properties

Density, g/cm3 10
13

Common Calculations

Stiffness to Weight: Axial, points 4.6
5.8
Stiffness to Weight: Bending, points 15
13
Strength to Weight: Axial, points 4.2
4.5
Strength to Weight: Bending, points 6.3
6.0
Thermal Shock Resistance, points 6.7
9.0

Alloy Composition

Copper (Cu), % 26.4 to 28.8
0
Gold (Au), % 0
29.5 to 30.5
Lithium (Li), % 0.25 to 0.5
0
Nickel (Ni), % 0
35.5 to 36.4
Palladium (Pd), % 0
33.5 to 34.5
Silver (Ag), % 71 to 73
0
Residuals, % 0
0 to 0.15