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R30006 Cobalt vs. EN 1.7383 Steel

R30006 cobalt belongs to the cobalt alloys classification, while EN 1.7383 steel belongs to the iron 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 R30006 cobalt and the bottom bar is EN 1.7383 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 1.0
20 to 23
Fatigue Strength, MPa 260
210 to 270
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 85
74
Tensile Strength: Ultimate (UTS), MPa 900
560 to 610
Tensile Strength: Yield (Proof), MPa 540
300 to 400

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Melting Completion (Liquidus), °C 1400
1470
Melting Onset (Solidus), °C 1290
1430
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 15
39
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
8.8

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.9
Embodied Carbon, kg CO2/kg material 7.8
1.8
Embodied Energy, MJ/kg 110
23
Embodied Water, L/kg 500
59

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
110
Resilience: Unit (Modulus of Resilience), kJ/m3 670
240 to 420
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 29
20 to 22
Strength to Weight: Bending, points 24
19 to 20
Thermal Diffusivity, mm2/s 3.9
11
Thermal Shock Resistance, points 26
16 to 18

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0.9 to 1.4
0.080 to 0.15
Chromium (Cr), % 27 to 32
2.0 to 2.5
Cobalt (Co), % 48.6 to 68.1
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 0 to 3.0
94.3 to 96.6
Manganese (Mn), % 0
0.4 to 0.8
Molybdenum (Mo), % 0 to 1.0
0.9 to 1.1
Nickel (Ni), % 0 to 3.0
0 to 0.3
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Tungsten (W), % 4.0 to 6.0
0