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ASTM B617 Coin Silver vs. AZ92A Magnesium

ASTM B617 coin silver belongs to the otherwise unclassified metals classification, while AZ92A magnesium belongs to the magnesium alloys. There are 19 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ASTM B617 coin silver and the bottom bar is AZ92A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 75
47
Elongation at Break, % 1.1 to 22
2.1 to 6.8
Poisson's Ratio 0.37
0.29
Shear Modulus, GPa 28
18
Shear Strength, MPa 180 to 290
97 to 160
Tensile Strength: Ultimate (UTS), MPa 290 to 520
170 to 270

Thermal Properties

Latent Heat of Fusion, J/g 120
350
Melting Completion (Liquidus), °C 870
590
Melting Onset (Solidus), °C 780
440
Specific Heat Capacity, J/kg-K 250
980
Thermal Expansion, µm/m-K 19
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 83
11 to 12
Electrical Conductivity: Equal Weight (Specific), % IACS 72
53 to 62

Otherwise Unclassified Properties

Density, g/cm3 10
1.8

Common Calculations

Stiffness to Weight: Axial, points 4.1
14
Stiffness to Weight: Bending, points 14
67
Strength to Weight: Axial, points 7.7 to 14
26 to 41
Strength to Weight: Bending, points 9.3 to 14
38 to 51
Thermal Shock Resistance, points 14 to 25
10 to 16

Alloy Composition

Aluminum (Al), % 0 to 0.0050
8.3 to 9.7
Cadmium (Cd), % 0 to 0.050
0
Copper (Cu), % 9.0 to 10.4
0 to 0.25
Iron (Fe), % 0 to 0.050
0
Lead (Pb), % 0 to 0.030
0
Magnesium (Mg), % 0
86.7 to 90
Manganese (Mn), % 0
0.1 to 0.35
Nickel (Ni), % 0 to 0.010
0 to 0.010
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0
0 to 0.3
Silver (Ag), % 89.6 to 91
0
Zinc (Zn), % 0 to 0.060
1.6 to 2.4
Residuals, % 0
0 to 0.3