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R58150 Titanium vs. R30021 Cobalt

R58150 titanium belongs to the titanium alloys classification, while R30021 cobalt belongs to the cobalt alloys. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is R58150 titanium and the bottom bar is R30021 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
220
Elongation at Break, % 13
9.0
Fatigue Strength, MPa 330
250
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 52
86
Tensile Strength: Ultimate (UTS), MPa 770
700
Tensile Strength: Yield (Proof), MPa 550
500

Thermal Properties

Latent Heat of Fusion, J/g 410
330
Melting Completion (Liquidus), °C 1760
1350
Melting Onset (Solidus), °C 1700
1190
Specific Heat Capacity, J/kg-K 500
450
Thermal Expansion, µm/m-K 8.4
11

Otherwise Unclassified Properties

Density, g/cm3 5.4
8.4
Embodied Carbon, kg CO2/kg material 31
8.0
Embodied Energy, MJ/kg 480
110
Embodied Water, L/kg 150
520

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
57
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
570
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 32
24
Strength to Weight: Axial, points 40
23
Strength to Weight: Bending, points 35
21
Thermal Shock Resistance, points 48
21

Alloy Composition

Carbon (C), % 0 to 0.1
0.2 to 0.35
Chromium (Cr), % 0
26 to 29
Cobalt (Co), % 0
61.7 to 67.3
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.1
0 to 3.0
Molybdenum (Mo), % 14 to 16
4.5 to 6.0
Nickel (Ni), % 0
2.0 to 3.0
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Silicon (Si), % 0
0 to 1.5
Titanium (Ti), % 83.5 to 86
0