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Cold Worked R30605 Cobalt vs. Cold Worked R60901 Alloy

Cold worked R30605 cobalt belongs to the cobalt alloys classification, while cold worked R60901 alloy belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is cold worked R30605 cobalt and the bottom bar is cold worked R60901 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
98
Elongation at Break, % 34
17
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 81
37
Tensile Strength: Ultimate (UTS), MPa 1900
580
Tensile Strength: Yield (Proof), MPa 1600
390

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Melting Completion (Liquidus), °C 1410
1870
Specific Heat Capacity, J/kg-K 410
270
Thermal Conductivity, W/m-K 9.6
17
Thermal Expansion, µm/m-K 12
6.3

Otherwise Unclassified Properties

Density, g/cm3 9.6
6.6
Embodied Water, L/kg 450
270

Common Calculations

Stiffness to Weight: Axial, points 12
8.3
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 55
25
Strength to Weight: Bending, points 36
24
Thermal Diffusivity, mm2/s 2.5
9.7
Thermal Shock Resistance, points 52
67

Alloy Composition


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Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 57
0
Iron (Fe), % 0 to 3.0
0
Manganese (Mn), % 1.0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0
Niobium (Nb), % 0
2.4 to 2.8
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 14 to 16
0
Zirconium (Zr), % 0
96.8 to 97.5
Residuals, % 0
0 to 0.29