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R30001 Cobalt vs. K94200 Alloy

R30001 cobalt belongs to the cobalt alloys classification, while K94200 alloy belongs to the iron alloys. There are 18 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 R30001 cobalt and the bottom bar is K94200 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
140
Elongation at Break, % 1.0
5.0 to 32
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 86
54
Tensile Strength: Ultimate (UTS), MPa 620
500 to 710

Thermal Properties

Melting Onset (Solidus), °C 1260
1440
Specific Heat Capacity, J/kg-K 430
500
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 11
5.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
3.0

Otherwise Unclassified Properties

Density, g/cm3 9.0
8.2

Common Calculations

Stiffness to Weight: Axial, points 14
9.8
Stiffness to Weight: Bending, points 22
21
Strength to Weight: Axial, points 19
17 to 24
Strength to Weight: Bending, points 18
17 to 22
Thermal Diffusivity, mm2/s 3.7
3.7
Thermal Shock Resistance, points 19
49 to 70