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R30003 Cobalt vs. SAE-AISI M52 Steel

R30003 cobalt belongs to the cobalt alloys classification, while SAE-AISI M52 steel belongs to the iron alloys. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is R30003 cobalt and the bottom bar is SAE-AISI M52 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 83
75
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
710 to 2280

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Melting Completion (Liquidus), °C 1400
1510
Melting Onset (Solidus), °C 1440
1470
Specific Heat Capacity, J/kg-K 450
460
Thermal Conductivity, W/m-K 13
31
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
10

Otherwise Unclassified Properties

Base Metal Price, % relative 95
12
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 8.0
7.5
Embodied Energy, MJ/kg 110
110
Embodied Water, L/kg 400
89

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 32 to 57
25 to 80
Strength to Weight: Bending, points 26 to 38
22 to 49
Thermal Diffusivity, mm2/s 3.3
8.4
Thermal Shock Resistance, points 26 to 45
21 to 67

Alloy Composition

Boron (B), % 0 to 0.1
0
Carbon (C), % 0 to 0.15
0.85 to 1.0
Chromium (Cr), % 19 to 21
3.5 to 4.3
Cobalt (Co), % 39 to 41
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 10 to 20.5
84.4 to 88.9
Manganese (Mn), % 1.5 to 2.5
0.15 to 0.45
Molybdenum (Mo), % 6.0 to 8.0
4.0 to 4.9
Nickel (Ni), % 14 to 16
0 to 0.3
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 1.2
0.2 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0
0.75 to 1.5
Vanadium (V), % 0
1.7 to 2.3

Comparable Variants