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ASTM B617 Coin Silver vs. AWS BAg-18

Both ASTM B617 coin silver and AWS BAg-18 are otherwise unclassified metals. They have 70% of their average alloy composition in common. There are 15 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM B617 coin silver and the bottom bar is AWS BAg-18.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 75
82
Poisson's Ratio 0.37
0.36
Shear Modulus, GPa 28
30
Tensile Strength: Ultimate (UTS), MPa 290 to 520
170

Thermal Properties

Latent Heat of Fusion, J/g 120
130
Melting Completion (Liquidus), °C 870
720
Melting Onset (Solidus), °C 780
600
Specific Heat Capacity, J/kg-K 250
280
Thermal Expansion, µm/m-K 19
19

Otherwise Unclassified Properties

Density, g/cm3 10
9.7

Common Calculations

Stiffness to Weight: Axial, points 4.1
4.7
Stiffness to Weight: Bending, points 14
15
Strength to Weight: Axial, points 7.7 to 14
4.9
Strength to Weight: Bending, points 9.3 to 14
7.0
Thermal Shock Resistance, points 14 to 25
7.7

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0
Cadmium (Cd), % 0 to 0.050
0
Copper (Cu), % 9.0 to 10.4
28.4 to 31.5
Iron (Fe), % 0 to 0.050
0
Lead (Pb), % 0 to 0.030
0
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.020
0
Silver (Ag), % 89.6 to 91
59 to 61
Tin (Sn), % 0
9.5 to 10.5
Zinc (Zn), % 0 to 0.060
0
Residuals, % 0 to 0.060
0 to 0.15