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Grade 6 Titanium vs. R30012 Cobalt

Grade 6 titanium belongs to the titanium alloys classification, while R30012 cobalt belongs to the cobalt alloys. There are 27 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 6 titanium and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
220
Elongation at Break, % 11
1.0
Fatigue Strength, MPa 290
320
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 39
86
Tensile Strength: Ultimate (UTS), MPa 890
830
Tensile Strength: Yield (Proof), MPa 840
650

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Melting Completion (Liquidus), °C 1580
1470
Melting Onset (Solidus), °C 1530
1280
Specific Heat Capacity, J/kg-K 550
440
Thermal Conductivity, W/m-K 7.8
15
Thermal Expansion, µm/m-K 9.4
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.8

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.8
Embodied Carbon, kg CO2/kg material 30
8.3
Embodied Energy, MJ/kg 480
120
Embodied Water, L/kg 190
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 3390
960
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 55
26
Strength to Weight: Bending, points 46
22
Thermal Diffusivity, mm2/s 3.2
3.8
Thermal Shock Resistance, points 65
23

Alloy Composition


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Aluminum (Al), % 4.0 to 6.0
0
Carbon (C), % 0 to 0.080
1.4 to 2.0
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
47.5 to 64.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
0 to 3.0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 3.0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.2
0
Silicon (Si), % 0
0 to 2.0
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.8 to 94
0
Tungsten (W), % 0
7.5 to 9.5
Residuals, % 0 to 0.4
0