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Grade Ti-Pd8A Titanium vs. G-CoCr28 Cobalt

Grade Ti-Pd8A titanium belongs to the titanium alloys classification, while G-CoCr28 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade Ti-Pd8A titanium and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 13
6.7
Fatigue Strength, MPa 260
130
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
83
Tensile Strength: Ultimate (UTS), MPa 500
560
Tensile Strength: Yield (Proof), MPa 430
260

Thermal Properties

Latent Heat of Fusion, J/g 420
320
Maximum Temperature: Mechanical, °C 320
1200
Melting Completion (Liquidus), °C 1660
1330
Melting Onset (Solidus), °C 1610
1270
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
8.5
Thermal Expansion, µm/m-K 8.7
14

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.1
Embodied Carbon, kg CO2/kg material 49
6.2
Embodied Energy, MJ/kg 840
84
Embodied Water, L/kg 520
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 65
31
Resilience: Unit (Modulus of Resilience), kJ/m3 880
160
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 31
19
Strength to Weight: Bending, points 31
19
Thermal Diffusivity, mm2/s 8.6
2.2
Thermal Shock Resistance, points 39
14

Alloy Composition


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Carbon (C), % 0 to 0.1
0.050 to 0.25
Chromium (Cr), % 0
27 to 30
Cobalt (Co), % 0
48 to 52
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
9.7 to 24.5
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.050
0 to 4.0
Niobium (Nb), % 0
0 to 0.5
Oxygen (O), % 0 to 0.4
0
Palladium (Pd), % 0.12 to 0.3
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0.5 to 1.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 98.8 to 99.9
0
Residuals, % 0 to 0.4
0