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Grade 14 Titanium vs. Titanium 6-2-4-2

Both grade 14 titanium and titanium 6-2-4-2 are titanium alloys. Both are furnished in the annealed condition. They have 86% of their average alloy composition in common.

For each property being compared, the top bar is grade 14 titanium and the bottom bar is titanium 6-2-4-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 23
8.6
Fatigue Strength, MPa 220
490
Poisson's Ratio 0.32
0.32
Reduction in Area, % 34
21
Shear Modulus, GPa 41
40
Shear Strength, MPa 290
560
Tensile Strength: Ultimate (UTS), MPa 460
950
Tensile Strength: Yield (Proof), MPa 310
880

Thermal Properties

Latent Heat of Fusion, J/g 420
400
Maximum Temperature: Mechanical, °C 320
300
Melting Completion (Liquidus), °C 1660
1590
Melting Onset (Solidus), °C 1610
1540
Specific Heat Capacity, J/kg-K 540
540
Thermal Conductivity, W/m-K 21
6.9
Thermal Expansion, µm/m-K 8.7
9.5

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
0.9
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 37
42
Density, g/cm3 4.5
4.6
Embodied Carbon, kg CO2/kg material 32
32
Embodied Energy, MJ/kg 520
520
Embodied Water, L/kg 210
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
79
Resilience: Unit (Modulus of Resilience), kJ/m3 450
3640
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
34
Strength to Weight: Axial, points 28
57
Strength to Weight: Bending, points 29
46
Thermal Diffusivity, mm2/s 8.5
2.8
Thermal Shock Resistance, points 35
67

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0 to 0.080
0 to 0.050
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.3
0 to 0.25
Molybdenum (Mo), % 0
1.8 to 2.2
Nickel (Ni), % 0.4 to 0.6
0
Nitrogen (N), % 0 to 0.030
0 to 0.050
Oxygen (O), % 0 to 0.15
0 to 0.15
Ruthenium (Ru), % 0.040 to 0.060
0
Silicon (Si), % 0
0.060 to 0.12
Tin (Sn), % 0
1.8 to 2.2
Titanium (Ti), % 98.4 to 99.56
83.7 to 87.2
Zirconium (Zr), % 0
3.6 to 4.4
Residuals, % 0 to 0.4
0 to 0.4