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Grade 38 Titanium vs. Grade 11 Titanium

Both grade 38 titanium and grade 11 titanium are titanium alloys. Both are furnished in the annealed condition. They have a moderately high 92% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 38 titanium and the bottom bar is grade 11 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 11
29
Fatigue Strength, MPa 530
170
Poisson's Ratio 0.32
0.32
Reduction in Area, % 29
37
Shear Modulus, GPa 40
38
Shear Strength, MPa 600
200
Tensile Strength: Ultimate (UTS), MPa 1000
310
Tensile Strength: Yield (Proof), MPa 910
230

Thermal Properties

Latent Heat of Fusion, J/g 410
420
Maximum Temperature: Mechanical, °C 330
320
Melting Completion (Liquidus), °C 1620
1660
Melting Onset (Solidus), °C 1570
1610
Specific Heat Capacity, J/kg-K 550
540
Thermal Conductivity, W/m-K 8.0
22
Thermal Expansion, µm/m-K 9.3
9.2

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
7.3

Otherwise Unclassified Properties

Density, g/cm3 4.5
4.5
Embodied Carbon, kg CO2/kg material 35
47
Embodied Energy, MJ/kg 560
800
Embodied Water, L/kg 160
470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
81
Resilience: Unit (Modulus of Resilience), kJ/m3 3840
240
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 62
19
Strength to Weight: Bending, points 49
22
Thermal Diffusivity, mm2/s 3.2
8.9
Thermal Shock Resistance, points 72
22

Alloy Composition

Aluminum (Al), % 3.5 to 4.5
0
Carbon (C), % 0 to 0.080
0 to 0.080
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 1.2 to 1.8
0 to 0.2
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0.2 to 0.3
0 to 0.18
Palladium (Pd), % 0
0.12 to 0.25
Titanium (Ti), % 89.9 to 93.1
98.8 to 99.88
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0 to 0.4