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EN 1.3555 Steel vs. G-CoCr28 Cobalt

EN 1.3555 steel belongs to the iron alloys classification, while G-CoCr28 cobalt belongs to the cobalt alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is EN 1.3555 steel and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
83
Tensile Strength: Ultimate (UTS), MPa 770
560

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Maximum Temperature: Mechanical, °C 540
1200
Melting Completion (Liquidus), °C 1500
1330
Melting Onset (Solidus), °C 1450
1270
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 13
14

Otherwise Unclassified Properties

Base Metal Price, % relative 11
100
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 5.6
6.2
Embodied Energy, MJ/kg 81
84
Embodied Water, L/kg 90
440

Common Calculations

Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27
19
Strength to Weight: Bending, points 23
19
Thermal Shock Resistance, points 22
14

Alloy Composition

Carbon (C), % 0.1 to 0.15
0.050 to 0.25
Chromium (Cr), % 3.9 to 4.3
27 to 30
Cobalt (Co), % 0
48 to 52
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 85.4 to 87.7
9.7 to 24.5
Manganese (Mn), % 0.15 to 0.35
0 to 1.5
Molybdenum (Mo), % 4.0 to 4.5
0 to 0.5
Nickel (Ni), % 3.2 to 3.6
0 to 4.0
Niobium (Nb), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0.1 to 0.25
0.5 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.030
Tungsten (W), % 0 to 0.15
0
Vanadium (V), % 1.0 to 1.3
0