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C68400 Brass vs. ASTM B617 Coin Silver

C68400 brass belongs to the copper alloys classification, while ASTM B617 coin silver belongs to the otherwise unclassified metals. There are 19 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 C68400 brass and the bottom bar is ASTM B617 coin silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
75
Elongation at Break, % 18
1.1 to 22
Poisson's Ratio 0.31
0.37
Shear Modulus, GPa 41
28
Shear Strength, MPa 330
180 to 290
Tensile Strength: Ultimate (UTS), MPa 540
290 to 520

Thermal Properties

Latent Heat of Fusion, J/g 210
120
Melting Completion (Liquidus), °C 840
870
Melting Onset (Solidus), °C 820
780
Specific Heat Capacity, J/kg-K 400
250
Thermal Expansion, µm/m-K 20
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
83
Electrical Conductivity: Equal Weight (Specific), % IACS 99
72

Otherwise Unclassified Properties

Density, g/cm3 7.9
10

Common Calculations

Stiffness to Weight: Axial, points 7.5
4.1
Stiffness to Weight: Bending, points 20
14
Strength to Weight: Axial, points 19
7.7 to 14
Strength to Weight: Bending, points 19
9.3 to 14
Thermal Shock Resistance, points 18
14 to 25

Alloy Composition


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Aluminum (Al), % 0 to 0.5
0 to 0.0050
Boron (B), % 0.0010 to 0.030
0
Cadmium (Cd), % 0
0 to 0.050
Copper (Cu), % 59 to 64
9.0 to 10.4
Iron (Fe), % 0 to 1.0
0 to 0.050
Lead (Pb), % 0 to 0.090
0 to 0.030
Manganese (Mn), % 0.2 to 1.5
0
Nickel (Ni), % 0 to 0.5
0 to 0.010
Phosphorus (P), % 0.030 to 0.3
0 to 0.020
Silicon (Si), % 1.5 to 2.5
0
Silver (Ag), % 0
89.6 to 91
Tin (Sn), % 0 to 0.5
0
Zinc (Zn), % 28.6 to 39.3
0 to 0.060
Residuals, % 0 to 0.5
0 to 0.060