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AWS BAg-21 vs. AWS BAg-7

Both AWS BAg-21 and AWS BAg-7 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 83% of their average alloy composition in common. There are 17 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-21 and the bottom bar is AWS BAg-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 85
83
Poisson's Ratio 0.36
0.34
Shear Modulus, GPa 31
31
Tensile Strength: Ultimate (UTS), MPa 150
150

Thermal Properties

Brazing Temperature, °C 700 to 900
650 to 900
Latent Heat of Fusion, J/g 140
130
Melting Completion (Liquidus), °C 800
650
Melting Onset (Solidus), °C 690
620
Specific Heat Capacity, J/kg-K 280
290
Thermal Expansion, µm/m-K 19
20

Otherwise Unclassified Properties

Density, g/cm3 9.8
9.3
Embodied Energy, MJ/kg 970
860

Common Calculations

Stiffness to Weight: Axial, points 4.8
4.9
Stiffness to Weight: Bending, points 15
16
Strength to Weight: Axial, points 4.2
4.5
Strength to Weight: Bending, points 6.4
6.7
Thermal Shock Resistance, points 6.6
6.4

Alloy Composition

Copper (Cu), % 27.5 to 29.5
21 to 23
Nickel (Ni), % 2.0 to 3.0
0
Silver (Ag), % 62 to 64
55 to 57
Tin (Sn), % 5.0 to 7.0
4.5 to 5.5
Zinc (Zn), % 0
15 to 19
Residuals, % 0 to 0.15
0 to 0.15