Annealed R31538 Cobalt vs. Annealed K94200
Annealed R31538 cobalt belongs to the cobalt alloys classification, while annealed K94200 belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is annealed R31538 cobalt and the bottom bar is annealed K94200.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 220 | |
140 |
Elongation at Break, % | 23 | |
32 |
Poisson's Ratio | 0.29 | |
0.34 |
Reduction in Area, % | 22 | |
75 |
Shear Modulus, GPa | 86 | |
54 |
Tensile Strength: Ultimate (UTS), MPa | 1020 | |
500 |
Tensile Strength: Yield (Proof), MPa | 580 | |
270 |
Thermal Properties
Melting Onset (Solidus), °C | 1290 | |
1440 |
Specific Heat Capacity, J/kg-K | 450 | |
500 |
Thermal Conductivity, W/m-K | 13 | |
15 |
Thermal Expansion, µm/m-K | 13 | |
5.0 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
2.7 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 2.1 | |
3.0 |
Otherwise Unclassified Properties
Density, g/cm3 | 8.4 | |
8.2 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 200 | |
130 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 750 | |
250 |
Stiffness to Weight: Axial, points | 15 | |
9.8 |
Stiffness to Weight: Bending, points | 24 | |
21 |
Strength to Weight: Axial, points | 34 | |
17 |
Strength to Weight: Bending, points | 27 | |
17 |
Thermal Diffusivity, mm2/s | 3.5 | |
3.7 |
Thermal Shock Resistance, points | 25 | |
49 |