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Grade 3 Titanium vs. R30035 Cobalt

Grade 3 titanium belongs to the titanium alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 29 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 3 titanium and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220 to 230
Elongation at Break, % 21
9.0 to 46
Fatigue Strength, MPa 300
170 to 740
Poisson's Ratio 0.32
0.29
Reduction in Area, % 34
40 to 74
Shear Modulus, GPa 39
84 to 89
Tensile Strength: Ultimate (UTS), MPa 510
900 to 1900
Tensile Strength: Yield (Proof), MPa 440
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 420
320
Melting Completion (Liquidus), °C 1660
1440
Melting Onset (Solidus), °C 1610
1320
Specific Heat Capacity, J/kg-K 540
440
Thermal Conductivity, W/m-K 21
11
Thermal Expansion, µm/m-K 9.2
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 6.6
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 37
100
Density, g/cm3 4.5
8.7
Embodied Carbon, kg CO2/kg material 31
10
Embodied Energy, MJ/kg 510
140
Embodied Water, L/kg 110
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 910
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 32
29 to 61
Strength to Weight: Bending, points 32
24 to 39
Thermal Diffusivity, mm2/s 8.6
3.0
Thermal Shock Resistance, points 37
23 to 46

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.080
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 0.3
0 to 1.0
Manganese (Mn), % 0
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0
33 to 37
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.35
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.15
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 98.8 to 100
0 to 1.0
Residuals, % 0 to 0.4
0