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R30016 Cobalt vs. EN 1.4724 Stainless Steel

R30016 cobalt belongs to the cobalt alloys classification, while EN 1.4724 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is R30016 cobalt and the bottom bar is EN 1.4724 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 8.4
16
Fatigue Strength, MPa 290
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 85
75
Tensile Strength: Ultimate (UTS), MPa 1010
550
Tensile Strength: Yield (Proof), MPa 580
280

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Melting Completion (Liquidus), °C 1360
1430
Melting Onset (Solidus), °C 1270
1390
Specific Heat Capacity, J/kg-K 450
490
Thermal Conductivity, W/m-K 15
21
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.7

Otherwise Unclassified Properties

Density, g/cm3 8.5
7.7
Embodied Carbon, kg CO2/kg material 7.7
2.0
Embodied Energy, MJ/kg 110
28
Embodied Water, L/kg 500
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
73
Resilience: Unit (Modulus of Resilience), kJ/m3 770
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33
20
Strength to Weight: Bending, points 26
19
Thermal Diffusivity, mm2/s 3.9
5.6
Thermal Shock Resistance, points 24
19

Alloy Composition

Aluminum (Al), % 0
0.7 to 1.2
Carbon (C), % 0.9 to 1.4
0 to 0.12
Chromium (Cr), % 28 to 32
12 to 14
Cobalt (Co), % 49.6 to 66.9
0
Iron (Fe), % 0 to 3.0
82.2 to 86.6
Manganese (Mn), % 0.5 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 1.5
0
Nickel (Ni), % 0 to 3.0
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.2 to 2.0
0.7 to 1.4
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 3.5 to 5.5
0