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C87900 Brass vs. ASTM B617 Coin Silver

C87900 brass belongs to the copper alloys classification, while ASTM B617 coin silver belongs to the otherwise unclassified metals. There are 18 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 C87900 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, % 25
1.1 to 22
Poisson's Ratio 0.31
0.37
Shear Modulus, GPa 41
28
Tensile Strength: Ultimate (UTS), MPa 480
290 to 520

Thermal Properties

Latent Heat of Fusion, J/g 190
120
Melting Completion (Liquidus), °C 930
870
Melting Onset (Solidus), °C 900
780
Specific Heat Capacity, J/kg-K 390
250
Thermal Expansion, µm/m-K 20
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
83
Electrical Conductivity: Equal Weight (Specific), % IACS 17
72

Otherwise Unclassified Properties

Density, g/cm3 8.1
10

Common Calculations

Stiffness to Weight: Axial, points 7.3
4.1
Stiffness to Weight: Bending, points 20
14
Strength to Weight: Axial, points 17
7.7 to 14
Strength to Weight: Bending, points 17
9.3 to 14
Thermal Shock Resistance, points 16
14 to 25

Alloy Composition


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Aluminum (Al), % 0 to 0.15
0 to 0.0050
Antimony (Sb), % 0 to 0.050
0
Arsenic (As), % 0 to 0.050
0
Cadmium (Cd), % 0
0 to 0.050
Copper (Cu), % 63 to 69.2
9.0 to 10.4
Iron (Fe), % 0 to 0.4
0 to 0.050
Lead (Pb), % 0 to 0.25
0 to 0.030
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.5
0 to 0.010
Phosphorus (P), % 0 to 0.010
0 to 0.020
Silicon (Si), % 0.8 to 1.2
0
Silver (Ag), % 0
89.6 to 91
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 0 to 0.25
0
Zinc (Zn), % 30 to 36
0 to 0.060
Residuals, % 0
0 to 0.060