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Grade 25 Titanium vs. R30001 Cobalt

Grade 25 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 (9, in this case) are not shown.

For each property being compared, the top bar is grade 25 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, % 11
1.0
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
86
Tensile Strength: Ultimate (UTS), MPa 1000
620

Thermal Properties

Latent Heat of Fusion, J/g 410
310
Melting Completion (Liquidus), °C 1610
1530
Melting Onset (Solidus), °C 1560
1260
Specific Heat Capacity, J/kg-K 560
430
Thermal Conductivity, W/m-K 7.1
15
Thermal Expansion, µm/m-K 9.6
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
1.8

Otherwise Unclassified Properties

Density, g/cm3 4.5
9.0
Embodied Carbon, kg CO2/kg material 43
8.9
Embodied Energy, MJ/kg 700
130
Embodied Water, L/kg 320
460

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
22
Strength to Weight: Axial, points 62
19
Strength to Weight: Bending, points 50
18
Thermal Diffusivity, mm2/s 2.8
3.7
Thermal Shock Resistance, points 71
19

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
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 0.013
0
Iron (Fe), % 0 to 0.4
0 to 3.0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0.3 to 0.8
0 to 3.0
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Palladium (Pd), % 0.040 to 0.080
0
Silicon (Si), % 0
0 to 2.0
Titanium (Ti), % 86.7 to 90.6
0
Tungsten (W), % 0
11 to 13
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0