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G-CoCr28 Cobalt vs. Grade 32 Titanium

G-CoCr28 cobalt belongs to the cobalt alloys classification, while grade 32 titanium belongs to the titanium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is G-CoCr28 cobalt and the bottom bar is grade 32 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 6.7
11
Fatigue Strength, MPa 130
390
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 83
40
Tensile Strength: Ultimate (UTS), MPa 560
770
Tensile Strength: Yield (Proof), MPa 260
670

Thermal Properties

Latent Heat of Fusion, J/g 320
410
Maximum Temperature: Mechanical, °C 1200
310
Melting Completion (Liquidus), °C 1330
1610
Melting Onset (Solidus), °C 1270
1560
Specific Heat Capacity, J/kg-K 470
550
Thermal Conductivity, W/m-K 8.5
7.5
Thermal Expansion, µm/m-K 14
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 100
38
Density, g/cm3 8.1
4.5
Embodied Carbon, kg CO2/kg material 6.2
32
Embodied Energy, MJ/kg 84
530
Embodied Water, L/kg 440
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
83
Resilience: Unit (Modulus of Resilience), kJ/m3 160
2100
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 19
47
Strength to Weight: Bending, points 19
41
Thermal Diffusivity, mm2/s 2.2
3.0
Thermal Shock Resistance, points 14
63

Alloy Composition


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Aluminum (Al), % 0
4.5 to 5.5
Carbon (C), % 0.050 to 0.25
0 to 0.080
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 48 to 52
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 9.7 to 24.5
0 to 0.25
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0 to 0.5
0.6 to 1.2
Nickel (Ni), % 0 to 4.0
0
Niobium (Nb), % 0 to 0.5
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.11
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.5 to 1.5
0.060 to 0.14
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0.6 to 1.4
Titanium (Ti), % 0
88.1 to 93
Vanadium (V), % 0
0.6 to 1.4
Zirconium (Zr), % 0
0.6 to 1.4
Residuals, % 0
0 to 0.4