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EN 1.5113 Steel vs. R30021 Cobalt

EN 1.5113 steel belongs to the iron alloys classification, while R30021 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.5113 steel and the bottom bar is R30021 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 11 to 18
9.0
Fatigue Strength, MPa 220 to 470
250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
86
Tensile Strength: Ultimate (UTS), MPa 580 to 900
700
Tensile Strength: Yield (Proof), MPa 320 to 770
500

Thermal Properties

Latent Heat of Fusion, J/g 260
330
Melting Completion (Liquidus), °C 1450
1350
Melting Onset (Solidus), °C 1410
1190
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 52
15
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.1

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 1.4
8.0
Embodied Energy, MJ/kg 19
110
Embodied Water, L/kg 48
520

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 91 to 96
57
Resilience: Unit (Modulus of Resilience), kJ/m3 270 to 1570
570
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21 to 32
23
Strength to Weight: Bending, points 20 to 27
21
Thermal Diffusivity, mm2/s 14
3.8
Thermal Shock Resistance, points 17 to 26
21

Alloy Composition

Carbon (C), % 0 to 0.1
0.2 to 0.35
Chromium (Cr), % 0
26 to 29
Cobalt (Co), % 0
61.7 to 67.3
Iron (Fe), % 97 to 97.5
0 to 3.0
Manganese (Mn), % 1.6 to 1.8
0
Molybdenum (Mo), % 0
4.5 to 6.0
Nickel (Ni), % 0
2.0 to 3.0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.9 to 1.1
0 to 1.5
Sulfur (S), % 0 to 0.025
0