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R30003 Cobalt vs. K94200 Alloy

R30003 cobalt belongs to the cobalt alloys classification, while K94200 alloy belongs to the iron alloys. There are 20 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 R30003 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, % 10 to 73
5.0 to 32
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 83
54
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
500 to 710
Tensile Strength: Yield (Proof), MPa 510 to 1090
270 to 650

Thermal Properties

Melting Onset (Solidus), °C 1440
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: Unit (Modulus of Resilience), kJ/m3 600 to 2790
250 to 1460
Stiffness to Weight: Axial, points 14
9.8
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 32 to 57
17 to 24
Strength to Weight: Bending, points 26 to 38
17 to 22
Thermal Diffusivity, mm2/s 3.3
3.7
Thermal Shock Resistance, points 26 to 45
49 to 70

Comparable Variants