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ASTM B522 Class II vs. AWS BAg-8

Both ASTM B522 class II and AWS BAg-8 are otherwise unclassified metals. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 15 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM B522 class II and the bottom bar is AWS BAg-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 96
84
Poisson's Ratio 0.41
0.36
Shear Modulus, GPa 34
31
Tensile Strength: Ultimate (UTS), MPa 280 to 490
150

Thermal Properties

Latent Heat of Fusion, J/g 77
140
Melting Completion (Liquidus), °C 1030
780
Melting Onset (Solidus), °C 1030
780
Specific Heat Capacity, J/kg-K 160
280
Thermal Expansion, µm/m-K 15
19

Otherwise Unclassified Properties

Density, g/cm3 17
10

Common Calculations

Stiffness to Weight: Axial, points 3.1
4.6
Stiffness to Weight: Bending, points 8.9
14
Strength to Weight: Axial, points 4.4 to 7.8
4.1
Strength to Weight: Bending, points 5.5 to 8.0
6.2
Thermal Shock Resistance, points 13 to 24
6.7

Alloy Composition


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Copper (Cu), % 0
26.9 to 29
Gold (Au), % 68.5 to 69.5
0
Platinum (Pt), % 5.5 to 6.5
0
Silver (Ag), % 24.5 to 25.5
71 to 73
Sulfur (S), % 0 to 0.010
0
Residuals, % 0 to 0.26
0 to 0.15