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R30075 Cobalt vs. EN 1.3518 Steel

R30075 cobalt belongs to the cobalt alloys classification, while EN 1.3518 steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R30075 cobalt and the bottom bar is EN 1.3518 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 82 to 98
72
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
630

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Melting Completion (Liquidus), °C 1360
1440
Melting Onset (Solidus), °C 1290
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
43
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
8.5

Otherwise Unclassified Properties

Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.1
1.5
Embodied Energy, MJ/kg 110
20
Embodied Water, L/kg 530
51

Common Calculations

Stiffness to Weight: Axial, points 14 to 17
13
Stiffness to Weight: Bending, points 24 to 25
25
Strength to Weight: Axial, points 26 to 42
23
Strength to Weight: Bending, points 22 to 31
21
Thermal Diffusivity, mm2/s 3.5
12
Thermal Shock Resistance, points 21 to 29
19

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 0.050
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0.93 to 1.1
Chromium (Cr), % 27 to 30
0.9 to 1.2
Cobalt (Co), % 58.7 to 68
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 0 to 0.75
96.3 to 97.8
Manganese (Mn), % 0 to 1.0
0.9 to 1.2
Molybdenum (Mo), % 5.0 to 7.0
0 to 0.1
Nickel (Ni), % 0 to 0.5
0
Nitrogen (N), % 0 to 0.25
0
Oxygen (O), % 0
0 to 0.0015
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 1.0
0.45 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0 to 0.2
0