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ASTM B685 Alloy vs. CC212E Bronze

ASTM B685 alloy belongs to the otherwise unclassified metals classification, while CC212E bronze belongs to the copper alloys. They have 40% of their average alloy composition in common. There are 17 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ASTM B685 alloy and the bottom bar is CC212E bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
130
Poisson's Ratio 0.37
0.34
Shear Modulus, GPa 43
47
Tensile Strength: Ultimate (UTS), MPa 660 to 1060
710

Thermal Properties

Latent Heat of Fusion, J/g 180
230
Melting Completion (Liquidus), °C 1230
1080
Melting Onset (Solidus), °C 1200
1020
Specific Heat Capacity, J/kg-K 300
440
Thermal Expansion, µm/m-K 14
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 5.0
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 4.1
3.3

Otherwise Unclassified Properties

Density, g/cm3 11
8.2

Common Calculations

Stiffness to Weight: Axial, points 6.1
8.5
Stiffness to Weight: Bending, points 15
20
Strength to Weight: Axial, points 17 to 27
24
Strength to Weight: Bending, points 16 to 21
21
Thermal Shock Resistance, points 28 to 46
22

Alloy Composition

Aluminum (Al), % 0 to 0.0050
7.0 to 9.0
Cadmium (Cd), % 0 to 0.050
0
Copper (Cu), % 39.5 to 40.5
68 to 77
Iron (Fe), % 0 to 0.050
2.0 to 4.0
Lead (Pb), % 0 to 0.030
0 to 0.050
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0
8.0 to 15
Nickel (Ni), % 0
1.5 to 4.5
Palladium (Pd), % 59 to 60.5
0
Silicon (Si), % 0
0 to 0.1
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 0
0 to 0.5
Zinc (Zn), % 0 to 0.060
0 to 1.0
Residuals, % 0 to 0.2
0