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Grade C-6 Titanium vs. R30075 Cobalt

Grade C-6 titanium belongs to the titanium alloys classification, while R30075 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 grade C-6 titanium and the bottom bar is R30075 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
210 to 250
Elongation at Break, % 9.0
12
Fatigue Strength, MPa 460
250 to 840
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 39
82 to 98
Tensile Strength: Ultimate (UTS), MPa 890
780 to 1280
Tensile Strength: Yield (Proof), MPa 830
480 to 840

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Melting Completion (Liquidus), °C 1580
1360
Melting Onset (Solidus), °C 1530
1290
Specific Heat Capacity, J/kg-K 550
450
Thermal Conductivity, W/m-K 7.8
13
Thermal Expansion, µm/m-K 9.8
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.1

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.4
Embodied Carbon, kg CO2/kg material 30
8.1
Embodied Energy, MJ/kg 480
110
Embodied Water, L/kg 190
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
84 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 3300
560 to 1410
Stiffness to Weight: Axial, points 13
14 to 17
Stiffness to Weight: Bending, points 35
24 to 25
Strength to Weight: Axial, points 55
26 to 42
Strength to Weight: Bending, points 46
22 to 31
Thermal Diffusivity, mm2/s 3.2
3.5
Thermal Shock Resistance, points 63
21 to 29

Alloy Composition


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Aluminum (Al), % 4.0 to 6.0
0 to 0.1
Boron (B), % 0
0 to 0.010
Carbon (C), % 0 to 0.1
0 to 0.35
Chromium (Cr), % 0
27 to 30
Cobalt (Co), % 0
58.7 to 68
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
0 to 0.75
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0 to 0.050
0 to 0.5
Nitrogen (N), % 0
0 to 0.25
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.7 to 94
0 to 0.1
Tungsten (W), % 0
0 to 0.2
Residuals, % 0 to 0.4
0