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EN 1.6554 Steel vs. R30003 Cobalt

EN 1.6554 steel belongs to the iron alloys classification, while R30003 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 R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 17 to 21
10 to 73
Fatigue Strength, MPa 380 to 520
320 to 560
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
83
Tensile Strength: Ultimate (UTS), MPa 780 to 930
970 to 1720
Tensile Strength: Yield (Proof), MPa 550 to 790
510 to 1090

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1440
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 40
13
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
95
Density, g/cm3 7.9
8.4
Embodied Carbon, kg CO2/kg material 1.7
8.0
Embodied Energy, MJ/kg 22
110
Embodied Water, L/kg 53
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 810 to 1650
600 to 2790
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27 to 33
32 to 57
Strength to Weight: Bending, points 24 to 27
26 to 38
Thermal Diffusivity, mm2/s 11
3.3
Thermal Shock Resistance, points 23 to 27
26 to 45

Alloy Composition

Boron (B), % 0
0 to 0.1
Carbon (C), % 0.23 to 0.28
0 to 0.15
Chromium (Cr), % 0.7 to 0.9
19 to 21
Cobalt (Co), % 0
39 to 41
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 94.6 to 97.3
10 to 20.5
Manganese (Mn), % 0.6 to 0.9
1.5 to 2.5
Molybdenum (Mo), % 0.2 to 0.3
6.0 to 8.0
Nickel (Ni), % 1.0 to 2.0
14 to 16
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0 to 0.6
0 to 1.2
Sulfur (S), % 0 to 0.025
0 to 0.015
Vanadium (V), % 0 to 0.030
0

Comparable Variants