R30008 Cobalt vs. K94200 Alloy
R30008 cobalt belongs to the cobalt alloys classification, while K94200 alloy belongs to the iron alloys. There are 16 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is R30008 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, % | 1.1 to 73 | |
5.0 to 32 |
Poisson's Ratio | 0.29 | |
0.34 |
Shear Modulus, GPa | 83 | |
54 |
Tensile Strength: Ultimate (UTS), MPa | 950 to 1700 | |
500 to 710 |
Tensile Strength: Yield (Proof), MPa | 500 to 1080 | |
270 to 650 |
Thermal Properties
Melting Onset (Solidus), °C | 1330 | |
1440 |
Specific Heat Capacity, J/kg-K | 450 | |
500 |
Thermal Expansion, µm/m-K | 13 | |
5.0 |
Otherwise Unclassified Properties
Density, g/cm3 | 8.4 | |
8.2 |
Common Calculations
Resilience: Unit (Modulus of Resilience), kJ/m3 | 590 to 2720 | |
250 to 1460 |
Stiffness to Weight: Axial, points | 14 | |
9.8 |
Stiffness to Weight: Bending, points | 24 | |
21 |
Strength to Weight: Axial, points | 31 to 56 | |
17 to 24 |
Strength to Weight: Bending, points | 25 to 37 | |
17 to 22 |
Thermal Shock Resistance, points | 25 to 44 | |
49 to 70 |