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Grade 34 Titanium vs. R30035 Cobalt

Grade 34 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 (2, in this case) are not shown.

For each property being compared, the top bar is grade 34 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, % 20
9.0 to 46
Fatigue Strength, MPa 310
170 to 740
Poisson's Ratio 0.32
0.29
Reduction in Area, % 34
40 to 74
Shear Modulus, GPa 41
84 to 89
Tensile Strength: Ultimate (UTS), MPa 510
900 to 1900
Tensile Strength: Yield (Proof), MPa 450
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 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 55
100
Density, g/cm3 4.5
8.7
Embodied Carbon, kg CO2/kg material 33
10
Embodied Energy, MJ/kg 530
140
Embodied Water, L/kg 200
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 960
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 31
29 to 61
Strength to Weight: Bending, points 31
24 to 39
Thermal Diffusivity, mm2/s 8.4
3.0
Thermal Shock Resistance, points 39
23 to 46

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.080
0 to 0.025
Chromium (Cr), % 0.1 to 0.2
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), % 0.35 to 0.55
33 to 37
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.35
0
Palladium (Pd), % 0.010 to 0.020
0
Phosphorus (P), % 0
0 to 0.015
Ruthenium (Ru), % 0.020 to 0.040
0
Silicon (Si), % 0
0 to 0.15
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 98 to 99.52
0 to 1.0
Residuals, % 0 to 0.4
0