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R58150 Titanium vs. R31233 Cobalt

R58150 titanium belongs to the titanium alloys classification, while R31233 cobalt belongs to the cobalt alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R58150 titanium and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
220
Elongation at Break, % 13
17
Fatigue Strength, MPa 330
220
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 52
85
Tensile Strength: Ultimate (UTS), MPa 770
1020
Tensile Strength: Yield (Proof), MPa 550
420

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Melting Completion (Liquidus), °C 1760
1350
Melting Onset (Solidus), °C 1700
1330
Specific Heat Capacity, J/kg-K 500
440
Thermal Expansion, µm/m-K 8.4
13

Otherwise Unclassified Properties

Density, g/cm3 5.4
8.6
Embodied Carbon, kg CO2/kg material 31
8.4
Embodied Energy, MJ/kg 480
110
Embodied Water, L/kg 150
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 32
23
Strength to Weight: Axial, points 40
33
Strength to Weight: Bending, points 35
26
Thermal Shock Resistance, points 48
25

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.1
0.020 to 0.1
Chromium (Cr), % 0
23.5 to 27.5
Cobalt (Co), % 0
44.7 to 63.3
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.1
1.0 to 5.0
Manganese (Mn), % 0
0.1 to 1.5
Molybdenum (Mo), % 14 to 16
4.0 to 6.0
Nickel (Ni), % 0
7.0 to 11
Nitrogen (N), % 0 to 0.050
0.030 to 0.12
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.050 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 83.5 to 86
0
Tungsten (W), % 0
1.0 to 3.0