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Grade 24 Titanium vs. R30155 Cobalt

Grade 24 titanium belongs to the titanium alloys classification, while R30155 cobalt belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is grade 24 titanium and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 11
34
Fatigue Strength, MPa 550
310
Poisson's Ratio 0.32
0.29
Reduction in Area, % 28
34
Shear Modulus, GPa 40
81
Shear Strength, MPa 610
570
Tensile Strength: Ultimate (UTS), MPa 1010
850
Tensile Strength: Yield (Proof), MPa 940
390

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 340
1100
Melting Completion (Liquidus), °C 1610
1470
Melting Onset (Solidus), °C 1560
1420
Specific Heat Capacity, J/kg-K 560
450
Thermal Conductivity, W/m-K 7.1
12
Thermal Expansion, µm/m-K 9.6
14

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.5
Embodied Carbon, kg CO2/kg material 43
9.7
Embodied Energy, MJ/kg 710
150
Embodied Water, L/kg 310
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
230
Resilience: Unit (Modulus of Resilience), kJ/m3 4160
370
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 63
28
Strength to Weight: Bending, points 50
24
Thermal Diffusivity, mm2/s 2.9
3.2
Thermal Shock Resistance, points 72
21

Alloy Composition


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Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.080
0.080 to 0.16
Chromium (Cr), % 0
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
24.3 to 36.2
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0 to 0.050
0 to 0.2
Oxygen (O), % 0 to 0.2
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Titanium (Ti), % 87.5 to 91
0
Tungsten (W), % 0
2.0 to 3.0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0