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Hot Rolled EN 1.4618 vs. Hot Worked R31537 Cobalt

Hot rolled EN 1.4618 belongs to the iron alloys classification, while hot worked R31537 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is hot rolled EN 1.4618 and the bottom bar is hot worked R31537 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 51
14
Fatigue Strength, MPa 240
400
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
87
Tensile Strength: Ultimate (UTS), MPa 680
1140
Tensile Strength: Yield (Proof), MPa 250
780

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Melting Completion (Liquidus), °C 1400
1360
Melting Onset (Solidus), °C 1360
1290
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 15
13
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.1

Otherwise Unclassified Properties

Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 2.7
8.1
Embodied Energy, MJ/kg 39
110
Embodied Water, L/kg 150
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
140
Resilience: Unit (Modulus of Resilience), kJ/m3 160
1380
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
38
Strength to Weight: Bending, points 22
29
Thermal Diffusivity, mm2/s 4.0
3.4
Thermal Shock Resistance, points 15
28

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.14
Chromium (Cr), % 16.5 to 18.5
26 to 30
Cobalt (Co), % 0
58.9 to 69
Copper (Cu), % 1.0 to 2.5
0
Iron (Fe), % 62.7 to 72.5
0 to 0.75
Manganese (Mn), % 5.5 to 9.5
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 4.5 to 5.5
0 to 1.0
Nitrogen (N), % 0 to 0.15
0 to 0.25
Phosphorus (P), % 0 to 0.070
0
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0