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AWS BAg-2a vs. AWS BAg-20

Both AWS BAg-2a and AWS BAg-20 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 80% of their average alloy composition in common.

For each property being compared, the top bar is AWS BAg-2a and the bottom bar is AWS BAg-20.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
93
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 31
35
Tensile Strength: Ultimate (UTS), MPa 170
160

Thermal Properties

Brazing Temperature, °C 690 to 840
770 to 900
Latent Heat of Fusion, J/g 130
150
Melting Completion (Liquidus), °C 710
770
Melting Onset (Solidus), °C 610
680
Specific Heat Capacity, J/kg-K 310
340
Thermal Expansion, µm/m-K 23
21

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.6
Embodied Carbon, kg CO2/kg material 30
30
Embodied Energy, MJ/kg 470
480

Common Calculations

Stiffness to Weight: Axial, points 5.2
6.0
Stiffness to Weight: Bending, points 17
17
Strength to Weight: Axial, points 5.4
5.1
Strength to Weight: Bending, points 7.8
7.6
Thermal Shock Resistance, points 6.5
5.9

Alloy Composition

Cadmium (Cd), % 19 to 21
0
Copper (Cu), % 26 to 28
37 to 39
Silver (Ag), % 29 to 31
29 to 31
Zinc (Zn), % 21 to 25
30 to 34
Residuals, % 0
0 to 0.15