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SAE-AISI 1064 Steel vs. R30016 Cobalt

SAE-AISI 1064 steel belongs to the iron alloys classification, while R30016 cobalt belongs to the cobalt alloys. There are 28 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1064 steel and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 12 to 13
8.4
Fatigue Strength, MPa 300
290
Poisson's Ratio 0.29
0.28
Reduction in Area, % 42 to 43
8.0
Shear Modulus, GPa 72
85
Tensile Strength: Ultimate (UTS), MPa 720 to 730
1010
Tensile Strength: Yield (Proof), MPa 470 to 480
580

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Melting Completion (Liquidus), °C 1460
1360
Melting Onset (Solidus), °C 1420
1270
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 51
15
Thermal Expansion, µm/m-K 11
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.0

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 1.4
7.7
Embodied Energy, MJ/kg 19
110
Embodied Water, L/kg 46
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79 to 81
72
Resilience: Unit (Modulus of Resilience), kJ/m3 600 to 630
770
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25 to 26
33
Strength to Weight: Bending, points 23
26
Thermal Diffusivity, mm2/s 14
3.9
Thermal Shock Resistance, points 25
24

Alloy Composition

Carbon (C), % 0.6 to 0.7
0.9 to 1.4
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Iron (Fe), % 98.4 to 98.9
0 to 3.0
Manganese (Mn), % 0.5 to 0.8
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0
0 to 3.0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
0.2 to 2.0
Sulfur (S), % 0 to 0.050
0
Tungsten (W), % 0
3.5 to 5.5