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R30605 Cobalt vs. SAE-AISI H22 Steel

R30605 cobalt belongs to the cobalt alloys classification, while SAE-AISI H22 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is SAE-AISI H22 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
77
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
700 to 1920

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Melting Completion (Liquidus), °C 1410
1670
Melting Onset (Solidus), °C 1330
1620
Specific Heat Capacity, J/kg-K 410
440
Thermal Conductivity, W/m-K 9.6
31
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.7
Embodied Carbon, kg CO2/kg material 9.8
4.9
Embodied Energy, MJ/kg 140
73
Embodied Water, L/kg 450
72

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
22
Strength to Weight: Axial, points 33 to 55
22 to 61
Strength to Weight: Bending, points 25 to 36
20 to 39
Thermal Diffusivity, mm2/s 2.5
8.2
Thermal Shock Resistance, points 31 to 52
22 to 60

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.3 to 0.4
Chromium (Cr), % 19 to 21
1.8 to 3.8
Cobalt (Co), % 46.4 to 57
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 3.0
82.2 to 87.4
Manganese (Mn), % 1.0 to 2.0
0.15 to 0.4
Nickel (Ni), % 9.0 to 11
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.4
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 14 to 16
10 to 11.8
Vanadium (V), % 0
0.25 to 0.5

Comparable Variants