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AWS BAg-21 vs. AWS BAg-34

Both AWS BAg-21 and AWS BAg-34 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 69% 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-34.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 85
89
Poisson's Ratio 0.36
0.33
Shear Modulus, GPa 31
34
Tensile Strength: Ultimate (UTS), MPa 150
170

Thermal Properties

Brazing Temperature, °C 700 to 900
680 to 840
Latent Heat of Fusion, J/g 140
140
Melting Completion (Liquidus), °C 800
720
Melting Onset (Solidus), °C 690
650
Specific Heat Capacity, J/kg-K 280
330
Thermal Expansion, µm/m-K 19
21

Otherwise Unclassified Properties

Density, g/cm3 9.8
8.8
Embodied Energy, MJ/kg 970
600

Common Calculations

Stiffness to Weight: Axial, points 4.8
5.6
Stiffness to Weight: Bending, points 15
17
Strength to Weight: Axial, points 4.2
5.4
Strength to Weight: Bending, points 6.4
7.7
Thermal Shock Resistance, points 6.6
6.5

Alloy Composition

Copper (Cu), % 27.5 to 29.5
31 to 33
Nickel (Ni), % 2.0 to 3.0
0
Silver (Ag), % 62 to 64
37 to 39
Tin (Sn), % 5.0 to 7.0
1.5 to 2.5
Zinc (Zn), % 0
26 to 30
Residuals, % 0 to 0.15
0 to 0.15