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R30016 Cobalt vs. SAE-AISI 1536 Steel

R30016 cobalt belongs to the cobalt alloys classification, while SAE-AISI 1536 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 SAE-AISI 1536 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 8.4
14 to 18
Fatigue Strength, MPa 290
240 to 380
Poisson's Ratio 0.28
0.29
Reduction in Area, % 8.0
39 to 46
Shear Modulus, GPa 85
73
Tensile Strength: Ultimate (UTS), MPa 1010
640 to 720
Tensile Strength: Yield (Proof), MPa 580
360 to 600

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1360
1460
Melting Onset (Solidus), °C 1270
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 15
51
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.1

Otherwise Unclassified Properties

Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 7.7
1.4
Embodied Energy, MJ/kg 110
19
Embodied Water, L/kg 500
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
93 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 770
340 to 950
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 33
23 to 25
Strength to Weight: Bending, points 26
21 to 23
Thermal Diffusivity, mm2/s 3.9
14
Thermal Shock Resistance, points 24
20 to 23

Alloy Composition

Carbon (C), % 0.9 to 1.4
0.3 to 0.37
Chromium (Cr), % 28 to 32
0
Cobalt (Co), % 49.6 to 66.9
0
Iron (Fe), % 0 to 3.0
98 to 98.5
Manganese (Mn), % 0.5 to 2.0
1.2 to 1.5
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
Sulfur (S), % 0
0 to 0.050
Tungsten (W), % 3.5 to 5.5
0