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EN 1.0535 Steel vs. R30021 Cobalt

EN 1.0535 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 1.0535 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, % 12
9.0
Fatigue Strength, MPa 210
250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
86
Tensile Strength: Ultimate (UTS), MPa 690
700
Tensile Strength: Yield (Proof), MPa 340
500

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Melting Completion (Liquidus), °C 1460
1350
Melting Onset (Solidus), °C 1410
1190
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 48
15
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
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 47
520

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 69
57
Resilience: Unit (Modulus of Resilience), kJ/m3 310
570
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25
23
Strength to Weight: Bending, points 22
21
Thermal Diffusivity, mm2/s 13
3.8
Thermal Shock Resistance, points 22
21

Alloy Composition

Carbon (C), % 0.52 to 0.6
0.2 to 0.35
Chromium (Cr), % 0 to 0.4
26 to 29
Cobalt (Co), % 0
61.7 to 67.3
Iron (Fe), % 97.1 to 98.9
0 to 3.0
Manganese (Mn), % 0.6 to 0.9
0
Molybdenum (Mo), % 0 to 0.1
4.5 to 6.0
Nickel (Ni), % 0 to 0.4
2.0 to 3.0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.4
0 to 1.5
Sulfur (S), % 0 to 0.045
0