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SAE-AISI 1060 Steel vs. R31233 Cobalt

SAE-AISI 1060 steel belongs to the iron alloys classification, while R31233 cobalt belongs to the cobalt 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 SAE-AISI 1060 steel and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 10 to 13
17
Fatigue Strength, MPa 260 to 340
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
85
Tensile Strength: Ultimate (UTS), MPa 620 to 740
1020
Tensile Strength: Yield (Proof), MPa 400 to 540
420

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Melting Completion (Liquidus), °C 1460
1350
Melting Onset (Solidus), °C 1420
1330
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 51
12
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.6
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.1

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 1.4
8.4
Embodied Energy, MJ/kg 19
110
Embodied Water, L/kg 46
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 58 to 82
140
Resilience: Unit (Modulus of Resilience), kJ/m3 430 to 790
410
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 22 to 26
33
Strength to Weight: Bending, points 21 to 23
26
Thermal Diffusivity, mm2/s 14
3.2
Thermal Shock Resistance, points 20 to 24
25

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0.55 to 0.65
0.020 to 0.1
Chromium (Cr), % 0
23.5 to 27.5
Cobalt (Co), % 0
44.7 to 63.3
Iron (Fe), % 98.4 to 98.9
1.0 to 5.0
Manganese (Mn), % 0.6 to 0.9
0.1 to 1.5
Molybdenum (Mo), % 0
4.0 to 6.0
Nickel (Ni), % 0
7.0 to 11
Nitrogen (N), % 0
0.030 to 0.12
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0
0.050 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.020
Tungsten (W), % 0
1.0 to 3.0