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G-CoCr28 Cobalt vs. EN 1.3520 Steel

G-CoCr28 cobalt belongs to the cobalt alloys classification, while EN 1.3520 steel belongs to the iron alloys. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much. There are 22 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is G-CoCr28 cobalt and the bottom bar is EN 1.3520 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 83
72
Tensile Strength: Ultimate (UTS), MPa 560
620 to 730

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Maximum Temperature: Mechanical, °C 1200
430
Melting Completion (Liquidus), °C 1330
1440
Melting Onset (Solidus), °C 1270
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 8.5
43
Thermal Expansion, µm/m-K 14
13

Otherwise Unclassified Properties

Base Metal Price, % relative 100
2.6
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.2
1.5
Embodied Energy, MJ/kg 84
20
Embodied Water, L/kg 440
54

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
22 to 26
Strength to Weight: Bending, points 19
21 to 23
Thermal Diffusivity, mm2/s 2.2
12
Thermal Shock Resistance, points 14
18 to 22

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0.050 to 0.25
0.93 to 1.1
Chromium (Cr), % 27 to 30
1.4 to 1.7
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 9.7 to 24.5
95.9 to 97.2
Manganese (Mn), % 0 to 1.5
1.0 to 1.2
Molybdenum (Mo), % 0 to 0.5
0 to 0.1
Nickel (Ni), % 0 to 4.0
0
Niobium (Nb), % 0 to 0.5
0
Oxygen (O), % 0
0 to 0.0015
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0.5 to 1.5
0.45 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030