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Grade 12 Titanium vs. Grade 2 Titanium

Both grade 12 titanium and grade 2 titanium are titanium alloys. Both are furnished in the annealed condition. They have a very high 99% of their average alloy composition in common. There are 32 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 grade 12 titanium and the bottom bar is grade 2 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
150
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 21
23
Fatigue Strength, MPa 280
250
Poisson's Ratio 0.32
0.32
Reduction in Area, % 28
37
Shear Modulus, GPa 39
38
Shear Strength, MPa 330
270
Tensile Strength: Ultimate (UTS), MPa 530
420
Tensile Strength: Yield (Proof), MPa 410
360

Thermal Properties

Latent Heat of Fusion, J/g 420
420
Maximum Temperature: Mechanical, °C 320
320
Melting Completion (Liquidus), °C 1660
1660
Melting Onset (Solidus), °C 1610
1610
Specific Heat Capacity, J/kg-K 540
540
Thermal Conductivity, W/m-K 21
22
Thermal Expansion, µm/m-K 9.6
9.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 6.6
7.2

Otherwise Unclassified Properties

Base Metal Price, % relative 37
37
Density, g/cm3 4.5
4.5
Embodied Carbon, kg CO2/kg material 31
31
Embodied Energy, MJ/kg 500
510
Embodied Water, L/kg 110
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
92
Resilience: Unit (Modulus of Resilience), kJ/m3 770
600
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 32
26
Strength to Weight: Bending, points 32
28
Thermal Diffusivity, mm2/s 8.5
8.9
Thermal Shock Resistance, points 37
32

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.080
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.3
0 to 0.3
Molybdenum (Mo), % 0.2 to 0.4
0
Nickel (Ni), % 0.6 to 0.9
0
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.25
0 to 0.25
Titanium (Ti), % 97.6 to 99.2
98.9 to 100
Residuals, % 0
0 to 0.4