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R30075 Cobalt vs. ASTM B596 Au-Cu

R30075 cobalt belongs to the cobalt alloys classification, while ASTM B596 Au-Cu belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is R30075 cobalt and the bottom bar is ASTM B596 Au-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
100
Elongation at Break, % 12
4.3 to 17
Poisson's Ratio 0.29
0.41
Shear Modulus, GPa 82 to 98
36
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
450 to 620

Thermal Properties

Latent Heat of Fusion, J/g 320
77
Melting Completion (Liquidus), °C 1360
1060
Melting Onset (Solidus), °C 1290
930
Specific Heat Capacity, J/kg-K 450
150
Thermal Expansion, µm/m-K 12
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
14
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
6.7

Otherwise Unclassified Properties

Density, g/cm3 8.4
18

Common Calculations

Stiffness to Weight: Axial, points 14 to 17
3.1
Stiffness to Weight: Bending, points 24 to 25
8.5
Strength to Weight: Axial, points 26 to 42
6.8 to 9.4
Strength to Weight: Bending, points 22 to 31
7.1 to 8.8
Thermal Shock Resistance, points 21 to 29
22 to 30

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 58.7 to 68
0
Copper (Cu), % 0
9.0 to 11
Gold (Au), % 0
89 to 91
Iron (Fe), % 0 to 0.75
0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 0.5
0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0 to 0.2
0
Residuals, % 0
0 to 0.4

Comparable Variants