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R30155 Cobalt vs. SAE-AISI 12L14 Steel

Both R30155 cobalt and SAE-AISI 12L14 steel are iron alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is R30155 cobalt and the bottom bar is SAE-AISI 12L14 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
140 to 170
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
11 to 25
Fatigue Strength, MPa 310
190 to 290
Poisson's Ratio 0.29
0.29
Reduction in Area, % 34
39 to 51
Shear Modulus, GPa 81
72
Shear Strength, MPa 570
280 to 370
Tensile Strength: Ultimate (UTS), MPa 850
440 to 620
Tensile Strength: Yield (Proof), MPa 390
260 to 460

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 12
51
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 80
1.8
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 9.7
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 300
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
64 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 370
180 to 560
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28
15 to 22
Strength to Weight: Bending, points 24
16 to 20
Thermal Diffusivity, mm2/s 3.2
14
Thermal Shock Resistance, points 21
14 to 20

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.15
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 36.2
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), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0 to 0.2
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), % 0.75 to 1.3
0
Tungsten (W), % 2.0 to 3.0
0