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EN 1.6554 Steel vs. EN 2.4964 Cobalt

EN 1.6554 steel belongs to the iron alloys classification, while EN 2.4964 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.6554 steel and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 17 to 21
40
Fatigue Strength, MPa 380 to 520
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
86
Tensile Strength: Ultimate (UTS), MPa 780 to 930
960
Tensile Strength: Yield (Proof), MPa 550 to 790
390

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Melting Completion (Liquidus), °C 1460
1630
Melting Onset (Solidus), °C 1420
1550
Specific Heat Capacity, J/kg-K 470
400
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
1.8

Otherwise Unclassified Properties

Density, g/cm3 7.9
9.6
Embodied Carbon, kg CO2/kg material 1.7
9.8
Embodied Energy, MJ/kg 22
140
Embodied Water, L/kg 53
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
310
Resilience: Unit (Modulus of Resilience), kJ/m3 810 to 1650
340
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 27 to 33
28
Strength to Weight: Bending, points 24 to 27
23
Thermal Diffusivity, mm2/s 11
3.9
Thermal Shock Resistance, points 23 to 27
25

Alloy Composition

Carbon (C), % 0.23 to 0.28
0.050 to 0.15
Chromium (Cr), % 0.7 to 0.9
19 to 21
Cobalt (Co), % 0
46.4 to 58
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 94.6 to 97.3
0 to 3.0
Manganese (Mn), % 0.6 to 0.9
0 to 2.0
Molybdenum (Mo), % 0.2 to 0.3
0
Nickel (Ni), % 1.0 to 2.0
9.0 to 11
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 0.6
0 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.015
Tungsten (W), % 0
14 to 16
Vanadium (V), % 0 to 0.030
0