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R31539 Cobalt vs. EN 1.0033 Steel

R31539 cobalt belongs to the cobalt alloys classification, while EN 1.0033 steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R31539 cobalt and the bottom bar is EN 1.0033 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 13 to 22
17 to 32
Fatigue Strength, MPa 310 to 480
120 to 140
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 86
73
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
300 to 330
Tensile Strength: Yield (Proof), MPa 590 to 940
150 to 200

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1360
1470
Melting Onset (Solidus), °C 1290
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
53
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
8.0

Otherwise Unclassified Properties

Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 8.2
1.4
Embodied Energy, MJ/kg 110
18
Embodied Water, L/kg 530
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 190
48 to 83
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 2000
63 to 100
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 33 to 44
10 to 12
Strength to Weight: Bending, points 27 to 32
13 to 14
Thermal Diffusivity, mm2/s 3.5
14
Thermal Shock Resistance, points 24 to 32
9.4 to 10

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
0
Carbon (C), % 0 to 0.14
0 to 0.11
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 57.7 to 68.7
0
Iron (Fe), % 0 to 0.75
98.8 to 100
Lanthanum (La), % 0.030 to 0.2
0
Manganese (Mn), % 0 to 1.0
0 to 0.7
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.35
Sulfur (S), % 0
0 to 0.045

Comparable Variants