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R30816 Cobalt vs. SAE-AISI 12L14 Steel

R30816 cobalt belongs to the cobalt alloys classification, while SAE-AISI 12L14 steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is R30816 cobalt and the bottom bar is SAE-AISI 12L14 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280
140 to 170
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 23
11 to 25
Fatigue Strength, MPa 250
190 to 290
Poisson's Ratio 0.3
0.29
Reduction in Area, % 22
39 to 51
Shear Modulus, GPa 81
72
Tensile Strength: Ultimate (UTS), MPa 1020
440 to 620
Tensile Strength: Yield (Proof), MPa 460
260 to 460

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1540
1460
Melting Onset (Solidus), °C 1460
1420
Specific Heat Capacity, J/kg-K 420
470
Thermal Conductivity, W/m-K 13
51
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 9.1
7.9
Embodied Carbon, kg CO2/kg material 20
1.4
Embodied Energy, MJ/kg 320
18
Embodied Water, L/kg 440
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
64 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 510
180 to 560
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 31
15 to 22
Strength to Weight: Bending, points 25
16 to 20
Thermal Diffusivity, mm2/s 3.3
14
Thermal Shock Resistance, points 28
14 to 20

Alloy Composition

Carbon (C), % 0.32 to 0.42
0 to 0.15
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 40 to 49.8
0
Iron (Fe), % 0 to 5.0
97.9 to 98.7
Lead (Pb), % 0
0.15 to 0.35
Manganese (Mn), % 1.0 to 2.0
0.85 to 1.2
Molybdenum (Mo), % 3.5 to 4.5
0
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 3.5 to 4.5
0
Phosphorus (P), % 0 to 0.040
0.040 to 0.090
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0.26 to 0.35
Tantalum (Ta), % 3.5 to 4.5
0
Tungsten (W), % 3.5 to 4.5
0