MakeItFrom.com
Menu (ESC)

R30075 Cobalt vs. SAE-AISI O2 Steel

R30075 cobalt belongs to the cobalt alloys classification, while SAE-AISI O2 steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R30075 cobalt and the bottom bar is SAE-AISI O2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 82 to 98
72
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
640 to 2050

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1360
1450
Melting Onset (Solidus), °C 1290
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
43
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
8.6

Otherwise Unclassified Properties

Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.1
1.8
Embodied Energy, MJ/kg 110
26
Embodied Water, L/kg 530
50

Common Calculations

Stiffness to Weight: Axial, points 14 to 17
13
Stiffness to Weight: Bending, points 24 to 25
24
Strength to Weight: Axial, points 26 to 42
23 to 73
Strength to Weight: Bending, points 22 to 31
21 to 46
Thermal Diffusivity, mm2/s 3.5
12
Thermal Shock Resistance, points 21 to 29
22 to 70

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0.85 to 1.0
Chromium (Cr), % 27 to 30
0 to 0.5
Cobalt (Co), % 58.7 to 68
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 0.75
95 to 97.8
Manganese (Mn), % 0 to 1.0
1.4 to 1.8
Molybdenum (Mo), % 5.0 to 7.0
0 to 0.3
Nickel (Ni), % 0 to 0.5
0 to 0.3
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0 to 0.2
0
Vanadium (V), % 0
0 to 0.3

Comparable Variants