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ASTM B617 Coin Silver vs. C21000 Brass

ASTM B617 coin silver belongs to the otherwise unclassified metals classification, while C21000 brass belongs to the copper 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.

For each property being compared, the top bar is ASTM B617 coin silver and the bottom bar is C21000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 75
110
Elongation at Break, % 1.1 to 22
2.9 to 50
Poisson's Ratio 0.37
0.34
Shear Modulus, GPa 28
43
Shear Strength, MPa 180 to 290
180 to 280
Tensile Strength: Ultimate (UTS), MPa 290 to 520
240 to 450

Thermal Properties

Latent Heat of Fusion, J/g 120
200
Melting Completion (Liquidus), °C 870
1070
Melting Onset (Solidus), °C 780
1050
Specific Heat Capacity, J/kg-K 250
390
Thermal Expansion, µm/m-K 19
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 83
56
Electrical Conductivity: Equal Weight (Specific), % IACS 72
57

Otherwise Unclassified Properties

Density, g/cm3 10
8.8

Common Calculations

Stiffness to Weight: Axial, points 4.1
7.2
Stiffness to Weight: Bending, points 14
18
Strength to Weight: Axial, points 7.7 to 14
7.4 to 14
Strength to Weight: Bending, points 9.3 to 14
9.6 to 15
Thermal Shock Resistance, points 14 to 25
8.1 to 15

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Cadmium (Cd), % 0 to 0.050
0
Copper (Cu), % 9.0 to 10.4
94 to 96
Iron (Fe), % 0 to 0.050
0 to 0.050
Lead (Pb), % 0 to 0.030
0 to 0.030
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.020
0
Silver (Ag), % 89.6 to 91
0
Zinc (Zn), % 0 to 0.060
3.7 to 6.0
Residuals, % 0
0 to 0.2