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Grade C-6 Titanium vs. R30035 Cobalt

Grade C-6 titanium belongs to the titanium alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade C-6 titanium and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
220 to 230
Elongation at Break, % 9.0
9.0 to 46
Fatigue Strength, MPa 460
170 to 740
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 39
84 to 89
Tensile Strength: Ultimate (UTS), MPa 890
900 to 1900
Tensile Strength: Yield (Proof), MPa 830
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Melting Completion (Liquidus), °C 1580
1440
Melting Onset (Solidus), °C 1530
1320
Specific Heat Capacity, J/kg-K 550
440
Thermal Conductivity, W/m-K 7.8
11
Thermal Expansion, µm/m-K 9.8
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 36
100
Density, g/cm3 4.5
8.7
Embodied Carbon, kg CO2/kg material 30
10
Embodied Energy, MJ/kg 480
140
Embodied Water, L/kg 190
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 3300
210 to 5920
Stiffness to Weight: Axial, points 13
14 to 15
Stiffness to Weight: Bending, points 35
23 to 24
Strength to Weight: Axial, points 55
29 to 61
Strength to Weight: Bending, points 46
24 to 39
Thermal Diffusivity, mm2/s 3.2
3.0
Thermal Shock Resistance, points 63
23 to 46

Alloy Composition

Aluminum (Al), % 4.0 to 6.0
0
Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.1
0 to 0.025
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
29.1 to 39
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
0 to 1.0
Manganese (Mn), % 0
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0 to 0.050
33 to 37
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.15
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.7 to 94
0 to 1.0
Residuals, % 0 to 0.4
0