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C81500 Copper vs. ASTM B685 Alloy

C81500 copper belongs to the copper alloys classification, while ASTM B685 alloy belongs to the otherwise unclassified metals. 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 (12, in this case) are not shown.

For each property being compared, the top bar is C81500 copper and the bottom bar is ASTM B685 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
120
Poisson's Ratio 0.34
0.37
Shear Modulus, GPa 44
43
Tensile Strength: Ultimate (UTS), MPa 350
660 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 210
180
Melting Completion (Liquidus), °C 1090
1230
Melting Onset (Solidus), °C 1080
1200
Specific Heat Capacity, J/kg-K 390
300
Thermal Expansion, µm/m-K 17
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 82
5.0
Electrical Conductivity: Equal Weight (Specific), % IACS 83
4.1

Otherwise Unclassified Properties

Density, g/cm3 8.9
11

Common Calculations

Stiffness to Weight: Axial, points 7.3
6.1
Stiffness to Weight: Bending, points 18
15
Strength to Weight: Axial, points 11
17 to 27
Strength to Weight: Bending, points 12
16 to 21
Thermal Shock Resistance, points 12
28 to 46

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Chromium (Cr), % 0.4 to 1.5
0
Copper (Cu), % 97.4 to 99.6
39.5 to 40.5
Iron (Fe), % 0 to 0.1
0 to 0.050
Lead (Pb), % 0 to 0.020
0 to 0.030
Palladium (Pd), % 0
59 to 60.5
Silicon (Si), % 0 to 0.15
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0 to 0.060
Residuals, % 0
0 to 0.2