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R30016 Cobalt vs. SAE-AISI 1095 Steel

R30016 cobalt belongs to the cobalt alloys classification, while SAE-AISI 1095 steel belongs to the iron 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 R30016 cobalt and the bottom bar is SAE-AISI 1095 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 8.4
10 to 11
Fatigue Strength, MPa 290
310 to 370
Poisson's Ratio 0.28
0.29
Reduction in Area, % 8.0
28 to 45
Shear Modulus, GPa 85
72
Tensile Strength: Ultimate (UTS), MPa 1010
680 to 900
Tensile Strength: Yield (Proof), MPa 580
500 to 590

Thermal Properties

Latent Heat of Fusion, J/g 320
240
Melting Completion (Liquidus), °C 1360
1450
Melting Onset (Solidus), °C 1270
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 15
47
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
9.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
11

Otherwise Unclassified Properties

Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 7.7
1.4
Embodied Energy, MJ/kg 110
19
Embodied Water, L/kg 500
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
63 to 84
Resilience: Unit (Modulus of Resilience), kJ/m3 770
660 to 930
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 33
24 to 32
Strength to Weight: Bending, points 26
22 to 26
Thermal Diffusivity, mm2/s 3.9
13
Thermal Shock Resistance, points 24
22 to 29

Alloy Composition

Carbon (C), % 0.9 to 1.4
0.9 to 1.0
Chromium (Cr), % 28 to 32
0
Cobalt (Co), % 49.6 to 66.9
0
Iron (Fe), % 0 to 3.0
98.4 to 98.8
Manganese (Mn), % 0.5 to 2.0
0.3 to 0.5
Molybdenum (Mo), % 0 to 1.5
0
Nickel (Ni), % 0 to 3.0
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.2 to 2.0
0
Sulfur (S), % 0
0 to 0.050
Tungsten (W), % 3.5 to 5.5
0