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Grade 20 Titanium vs. R30035 Cobalt

Grade 20 titanium belongs to the titanium alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is grade 20 titanium and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220 to 230
Elongation at Break, % 5.7 to 17
9.0 to 46
Fatigue Strength, MPa 550 to 630
170 to 740
Poisson's Ratio 0.32
0.29
Reduction in Area, % 23
40 to 74
Shear Modulus, GPa 47
84 to 89
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
900 to 1900
Tensile Strength: Yield (Proof), MPa 850 to 1190
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 400
320
Melting Completion (Liquidus), °C 1660
1440
Melting Onset (Solidus), °C 1600
1320
Specific Heat Capacity, J/kg-K 520
440
Thermal Expansion, µm/m-K 9.6
13

Otherwise Unclassified Properties

Density, g/cm3 5.0
8.7
Embodied Carbon, kg CO2/kg material 52
10
Embodied Energy, MJ/kg 860
140
Embodied Water, L/kg 350
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
210 to 5920
Stiffness to Weight: Axial, points 14
14 to 15
Stiffness to Weight: Bending, points 33
23 to 24
Strength to Weight: Axial, points 50 to 70
29 to 61
Strength to Weight: Bending, points 41 to 52
24 to 39
Thermal Shock Resistance, points 55 to 77
23 to 46

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
0
Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.050
0 to 0.025
Chromium (Cr), % 5.5 to 6.5
19 to 21
Cobalt (Co), % 0
29.1 to 39
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 1.0
Manganese (Mn), % 0
0 to 0.15
Molybdenum (Mo), % 3.5 to 4.5
9.0 to 10.5
Nickel (Ni), % 0
33 to 37
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.12
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.15
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 71 to 77
0 to 1.0
Vanadium (V), % 7.5 to 8.5
0
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0

Comparable Variants