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Titanium 6-2-4-2 vs. Grade 12 Titanium

Both titanium 6-2-4-2 and grade 12 titanium are titanium alloys. Both are furnished in the annealed condition. They have 86% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is titanium 6-2-4-2 and the bottom bar is grade 12 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 8.6
21
Fatigue Strength, MPa 490
280
Poisson's Ratio 0.32
0.32
Reduction in Area, % 21
28
Shear Modulus, GPa 40
39
Shear Strength, MPa 560
330
Tensile Strength: Ultimate (UTS), MPa 950
530
Tensile Strength: Yield (Proof), MPa 880
410

Thermal Properties

Latent Heat of Fusion, J/g 400
420
Maximum Temperature: Mechanical, °C 300
320
Melting Completion (Liquidus), °C 1590
1660
Melting Onset (Solidus), °C 1540
1610
Specific Heat Capacity, J/kg-K 540
540
Thermal Conductivity, W/m-K 6.9
21
Thermal Expansion, µm/m-K 9.5
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 0.9
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
6.6

Otherwise Unclassified Properties

Base Metal Price, % relative 42
37
Density, g/cm3 4.6
4.5
Embodied Carbon, kg CO2/kg material 32
31
Embodied Energy, MJ/kg 520
500
Embodied Water, L/kg 210
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
110
Resilience: Unit (Modulus of Resilience), kJ/m3 3640
770
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 34
35
Strength to Weight: Axial, points 57
32
Strength to Weight: Bending, points 46
32
Thermal Diffusivity, mm2/s 2.8
8.5
Thermal Shock Resistance, points 67
37

Alloy Composition


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Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.050
0 to 0.080
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.25
0 to 0.3
Molybdenum (Mo), % 1.8 to 2.2
0.2 to 0.4
Nickel (Ni), % 0
0.6 to 0.9
Nitrogen (N), % 0 to 0.050
0 to 0.030
Oxygen (O), % 0 to 0.15
0 to 0.25
Silicon (Si), % 0.060 to 0.12
0
Tin (Sn), % 1.8 to 2.2
0
Titanium (Ti), % 83.7 to 87.2
97.6 to 99.2
Zirconium (Zr), % 3.6 to 4.4
0
Residuals, % 0 to 0.4
0 to 0.4