MakeItFrom.com
Menu (ESC)

SAE-AISI F2 Steel vs. R30155 Cobalt

Both SAE-AISI F2 steel and R30155 cobalt are iron alloys. They have a modest 34% of their average alloy composition in common, which, by itself, doesn't mean much. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI F2 steel and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
81
Tensile Strength: Ultimate (UTS), MPa 710 to 2360
850

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Melting Completion (Liquidus), °C 1520
1470
Melting Onset (Solidus), °C 1470
1420
Specific Heat Capacity, J/kg-K 460
450
Thermal Conductivity, W/m-K 42
12
Thermal Expansion, µm/m-K 13
14

Otherwise Unclassified Properties

Base Metal Price, % relative 10
80
Density, g/cm3 8.1
8.5
Embodied Carbon, kg CO2/kg material 2.3
9.7
Embodied Energy, MJ/kg 32
150
Embodied Water, L/kg 50
300

Common Calculations

PREN (Pitting Resistance) 6.5
37
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 24 to 81
28
Strength to Weight: Bending, points 22 to 49
24
Thermal Diffusivity, mm2/s 11
3.2
Thermal Shock Resistance, points 21 to 71
21

Alloy Composition

Carbon (C), % 1.2 to 1.4
0.080 to 0.16
Chromium (Cr), % 0.2 to 0.4
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Iron (Fe), % 92.6 to 95.4
24.3 to 36.2
Manganese (Mn), % 0.1 to 0.5
1.0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.1 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tungsten (W), % 3.0 to 4.5
2.0 to 3.0