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Grade 3 Titanium vs. R30001 Cobalt

Grade 3 titanium belongs to the titanium alloys classification, while R30001 cobalt belongs to the cobalt alloys. There are 23 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is grade 3 titanium and the bottom bar is R30001 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 21
1.0
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 39
86
Tensile Strength: Ultimate (UTS), MPa 510
620

Thermal Properties

Latent Heat of Fusion, J/g 420
310
Melting Completion (Liquidus), °C 1660
1530
Melting Onset (Solidus), °C 1610
1260
Specific Heat Capacity, J/kg-K 540
430
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 9.2
11

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 4.5
9.0
Embodied Carbon, kg CO2/kg material 31
8.9
Embodied Energy, MJ/kg 510
130
Embodied Water, L/kg 110
460

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
22
Strength to Weight: Axial, points 32
19
Strength to Weight: Bending, points 32
18
Thermal Diffusivity, mm2/s 8.6
3.7
Thermal Shock Resistance, points 37
19

Alloy Composition

Carbon (C), % 0 to 0.080
2.0 to 3.0
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
43 to 59
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
0 to 3.0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 3.0
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.35
0
Silicon (Si), % 0
0 to 2.0
Titanium (Ti), % 98.8 to 100
0
Tungsten (W), % 0
11 to 13
Residuals, % 0 to 0.4
0