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AWS BAg-7 vs. AWS BAu-1

Both AWS BAg-7 and AWS BAu-1 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. There are 16 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-7 and the bottom bar is AWS BAu-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
110
Poisson's Ratio 0.34
0.37
Shear Modulus, GPa 31
40
Tensile Strength: Ultimate (UTS), MPa 150
210

Thermal Properties

Brazing Temperature, °C 650 to 900
1020 to 1090
Latent Heat of Fusion, J/g 130
150
Melting Completion (Liquidus), °C 650
1020
Melting Onset (Solidus), °C 620
990
Specific Heat Capacity, J/kg-K 290
290
Thermal Expansion, µm/m-K 20
16

Otherwise Unclassified Properties

Density, g/cm3 9.3
13

Common Calculations

Stiffness to Weight: Axial, points 4.9
4.7
Stiffness to Weight: Bending, points 16
12
Strength to Weight: Axial, points 4.5
4.5
Strength to Weight: Bending, points 6.7
6.1
Thermal Shock Resistance, points 6.4
8.5

Alloy Composition

Copper (Cu), % 21 to 23
61.9 to 63
Gold (Au), % 0
37 to 38
Silver (Ag), % 55 to 57
0
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 15 to 19
0
Residuals, % 0
0 to 0.15