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EN 1.3553 Steel vs. R30006 Cobalt

EN 1.3553 steel belongs to the iron alloys classification, while R30006 cobalt belongs to the cobalt alloys. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is EN 1.3553 steel and the bottom bar is R30006 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
85
Tensile Strength: Ultimate (UTS), MPa 720
900

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Melting Completion (Liquidus), °C 1620
1400
Melting Onset (Solidus), °C 1570
1290
Specific Heat Capacity, J/kg-K 440
450
Thermal Conductivity, W/m-K 24
15
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 11
1.7

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.6
Embodied Carbon, kg CO2/kg material 8.5
7.8
Embodied Energy, MJ/kg 130
110
Embodied Water, L/kg 96
500

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 24
29
Strength to Weight: Bending, points 21
24
Thermal Diffusivity, mm2/s 6.4
3.9
Thermal Shock Resistance, points 21
26

Alloy Composition

Carbon (C), % 0.78 to 0.86
0.9 to 1.4
Chromium (Cr), % 3.9 to 4.3
27 to 32
Cobalt (Co), % 0
48.6 to 68.1
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 80.7 to 83.7
0 to 3.0
Manganese (Mn), % 0 to 0.4
0
Molybdenum (Mo), % 4.7 to 5.2
0 to 1.0
Nickel (Ni), % 0
0 to 3.0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.4
0 to 2.0
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 6.0 to 6.7
4.0 to 6.0
Vanadium (V), % 1.7 to 2.0
0