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AWS BAg-1a vs. AWS BAg-2

Both AWS BAg-1a and AWS BAg-2 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 85% of their average alloy composition in common.

For each property being compared, the top bar is AWS BAg-1a and the bottom bar is AWS BAg-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 77
82
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 29
31
Tensile Strength: Ultimate (UTS), MPa 180
180

Thermal Properties

Brazing Temperature, °C 640 to 760
700 to 840
Latent Heat of Fusion, J/g 120
130
Melting Completion (Liquidus), °C 640
700
Melting Onset (Solidus), °C 630
610
Specific Heat Capacity, J/kg-K 280
310
Thermal Expansion, µm/m-K 22
22

Otherwise Unclassified Properties

Density, g/cm3 9.3
8.9
Embodied Carbon, kg CO2/kg material 48
35
Embodied Energy, MJ/kg 760
550

Common Calculations

Stiffness to Weight: Axial, points 4.6
5.1
Stiffness to Weight: Bending, points 15
16
Strength to Weight: Axial, points 5.4
5.6
Strength to Weight: Bending, points 7.6
7.9
Thermal Shock Resistance, points 7.5
7.0

Alloy Composition


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Cadmium (Cd), % 17 to 19
17 to 19
Copper (Cu), % 14.5 to 16.5
25 to 27
Silver (Ag), % 49 to 51
34 to 36
Zinc (Zn), % 14.5 to 18.5
19 to 23
Residuals, % 0 to 0.15
0 to 0.15