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AWS BAg-7 vs. ASTM B522 Class II

Both AWS BAg-7 and ASTM B522 class II 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 (11, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-7 and the bottom bar is ASTM B522 class II.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
96
Poisson's Ratio 0.34
0.41
Shear Modulus, GPa 31
34
Tensile Strength: Ultimate (UTS), MPa 150
280 to 490

Thermal Properties

Latent Heat of Fusion, J/g 130
77
Melting Completion (Liquidus), °C 650
1030
Melting Onset (Solidus), °C 620
1030
Specific Heat Capacity, J/kg-K 290
160
Thermal Expansion, µm/m-K 20
15

Otherwise Unclassified Properties

Density, g/cm3 9.3
17

Common Calculations

Stiffness to Weight: Axial, points 4.9
3.1
Stiffness to Weight: Bending, points 16
8.9
Strength to Weight: Axial, points 4.5
4.4 to 7.8
Strength to Weight: Bending, points 6.7
5.5 to 8.0
Thermal Shock Resistance, points 6.4
13 to 24

Alloy Composition

Copper (Cu), % 21 to 23
0
Gold (Au), % 0
68.5 to 69.5
Platinum (Pt), % 0
5.5 to 6.5
Silver (Ag), % 55 to 57
24.5 to 25.5
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 15 to 19
0
Residuals, % 0
0 to 0.26