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R60802 Alloy vs. R30155 Cobalt

R60802 alloy belongs to the otherwise unclassified metals classification, while R30155 cobalt belongs to the iron alloys. There are 20 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 R60802 alloy and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 98
210
Elongation at Break, % 22
34
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 36
81
Tensile Strength: Ultimate (UTS), MPa 430
850
Tensile Strength: Yield (Proof), MPa 270
390

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Specific Heat Capacity, J/kg-K 270
450
Thermal Conductivity, W/m-K 22
12
Thermal Expansion, µm/m-K 6.0
14

Otherwise Unclassified Properties

Density, g/cm3 6.5
8.5
Embodied Water, L/kg 290
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 85
230
Resilience: Unit (Modulus of Resilience), kJ/m3 380
370
Stiffness to Weight: Axial, points 8.3
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 18
28
Strength to Weight: Bending, points 19
24
Thermal Diffusivity, mm2/s 12
3.2
Thermal Shock Resistance, points 53
21

Alloy Composition

Carbon (C), % 0
0.080 to 0.16
Chromium (Cr), % 0.050 to 0.15
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Iron (Fe), % 0.070 to 0.2
24.3 to 36.2
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0.030 to 0.080
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tin (Sn), % 1.2 to 1.7
0
Tungsten (W), % 0
2.0 to 3.0
Zirconium (Zr), % 97.8 to 98.7
0
Residuals, % 0 to 0.11
0