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AWS BAg-37 vs. AWS BAg-28

Both AWS BAg-37 and AWS BAg-28 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-37 and the bottom bar is AWS BAg-28.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 94
88
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 36
33
Tensile Strength: Ultimate (UTS), MPa 180
150

Thermal Properties

Brazing Temperature, °C 780 to 890
680 to 840
Latent Heat of Fusion, J/g 150
140
Melting Completion (Liquidus), °C 780
710
Melting Onset (Solidus), °C 690
650
Specific Heat Capacity, J/kg-K 350
320
Thermal Expansion, µm/m-K 21
21

Otherwise Unclassified Properties

Density, g/cm3 8.5
8.9
Embodied Carbon, kg CO2/kg material 26
40
Embodied Energy, MJ/kg 410
630

Common Calculations

Stiffness to Weight: Axial, points 6.1
5.6
Stiffness to Weight: Bending, points 18
17
Strength to Weight: Axial, points 5.9
4.7
Strength to Weight: Bending, points 8.3
7.1
Thermal Shock Resistance, points 6.6
5.8

Alloy Composition

Copper (Cu), % 39 to 41
29 to 31
Silver (Ag), % 24 to 26
39 to 41
Tin (Sn), % 1.5 to 2.5
1.5 to 2.5
Zinc (Zn), % 31 to 35
26 to 30
Residuals, % 0
0 to 0.15