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Grade 17 Titanium vs. Grade 38 Titanium

Both grade 17 titanium and grade 38 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 (1, in this case) are not shown.

For each property being compared, the top bar is grade 17 titanium and the bottom bar is grade 38 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 27
11
Fatigue Strength, MPa 160
530
Poisson's Ratio 0.32
0.32
Reduction in Area, % 34
29
Shear Modulus, GPa 38
40
Shear Strength, MPa 180
600
Tensile Strength: Ultimate (UTS), MPa 270
1000
Tensile Strength: Yield (Proof), MPa 210
910

Thermal Properties

Latent Heat of Fusion, J/g 420
410
Maximum Temperature: Mechanical, °C 320
330
Melting Completion (Liquidus), °C 1660
1620
Melting Onset (Solidus), °C 1610
1570
Specific Heat Capacity, J/kg-K 540
550
Thermal Conductivity, W/m-K 23
8.0
Thermal Expansion, µm/m-K 8.7
9.3

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 4.5
4.5
Embodied Carbon, kg CO2/kg material 36
35
Embodied Energy, MJ/kg 600
560
Embodied Water, L/kg 230
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 68
110
Resilience: Unit (Modulus of Resilience), kJ/m3 220
3840
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 17
62
Strength to Weight: Bending, points 21
49
Thermal Diffusivity, mm2/s 9.3
3.2
Thermal Shock Resistance, points 21
72

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.5
Carbon (C), % 0 to 0.080
0 to 0.080
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.2
1.2 to 1.8
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.18
0.2 to 0.3
Palladium (Pd), % 0.040 to 0.080
0
Titanium (Ti), % 99.015 to 99.96
89.9 to 93.1
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0
0 to 0.4