MakeItFrom.com
Menu (ESC)

R30016 Cobalt vs. EN 1.6579 Steel

R30016 cobalt belongs to the cobalt alloys classification, while EN 1.6579 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R30016 cobalt and the bottom bar is EN 1.6579 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 8.4
11 to 14
Fatigue Strength, MPa 290
380 to 570
Impact Strength: V-Notched Charpy, J 8.0
35 to 41
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 85
73
Tensile Strength: Ultimate (UTS), MPa 1010
850 to 980
Tensile Strength: Yield (Proof), MPa 580
600 to 910

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1360
1460
Melting Onset (Solidus), °C 1270
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 15
39
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.8

Otherwise Unclassified Properties

Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 7.7
1.7
Embodied Energy, MJ/kg 110
22
Embodied Water, L/kg 500
56

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
100 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 770
950 to 2210
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 33
30 to 35
Strength to Weight: Bending, points 26
25 to 28
Thermal Diffusivity, mm2/s 3.9
11
Thermal Shock Resistance, points 24
25 to 29

Alloy Composition

Carbon (C), % 0.9 to 1.4
0.32 to 0.38
Chromium (Cr), % 28 to 32
1.4 to 1.7
Cobalt (Co), % 49.6 to 66.9
0
Iron (Fe), % 0 to 3.0
94.2 to 96.1
Manganese (Mn), % 0.5 to 2.0
0.6 to 1.0
Molybdenum (Mo), % 0 to 1.5
0.15 to 0.35
Nickel (Ni), % 0 to 3.0
1.4 to 1.7
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.2 to 2.0
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 3.5 to 5.5
0