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R30816 Cobalt vs. K94200 Alloy

R30816 cobalt belongs to the cobalt alloys classification, while K94200 alloy belongs to the iron alloys. There are 19 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 R30816 cobalt and the bottom bar is K94200 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
140
Elongation at Break, % 23
5.0 to 32
Poisson's Ratio 0.3
0.34
Shear Modulus, GPa 81
54
Tensile Strength: Ultimate (UTS), MPa 1020
500 to 710
Tensile Strength: Yield (Proof), MPa 460
270 to 650

Thermal Properties

Melting Onset (Solidus), °C 1460
1440
Specific Heat Capacity, J/kg-K 420
500
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 12
5.0

Otherwise Unclassified Properties

Density, g/cm3 9.1
8.2

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
35 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 510
250 to 1460
Stiffness to Weight: Axial, points 13
9.8
Stiffness to Weight: Bending, points 22
21
Strength to Weight: Axial, points 31
17 to 24
Strength to Weight: Bending, points 25
17 to 22
Thermal Diffusivity, mm2/s 3.3
3.7
Thermal Shock Resistance, points 28
49 to 70