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Titanium 15-3-3-3 vs. Grade 38 Titanium

Both titanium 15-3-3-3 and grade 38 titanium are titanium alloys. They have 81% of their average alloy composition in common. There are 29 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 titanium 15-3-3-3 and the bottom bar is grade 38 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 5.7 to 8.0
11
Fatigue Strength, MPa 610 to 710
530
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 39
40
Shear Strength, MPa 660 to 810
600
Tensile Strength: Ultimate (UTS), MPa 1120 to 1390
1000
Tensile Strength: Yield (Proof), MPa 1100 to 1340
910

Thermal Properties

Latent Heat of Fusion, J/g 390
410
Maximum Temperature: Mechanical, °C 430
330
Melting Completion (Liquidus), °C 1620
1620
Melting Onset (Solidus), °C 1560
1570
Specific Heat Capacity, J/kg-K 520
550
Thermal Conductivity, W/m-K 8.1
8.0
Thermal Expansion, µm/m-K 9.8
9.3

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 40
36
Density, g/cm3 4.8
4.5
Embodied Carbon, kg CO2/kg material 59
35
Embodied Energy, MJ/kg 950
560
Embodied Water, L/kg 260
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78 to 89
110
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 32
35
Strength to Weight: Axial, points 64 to 80
62
Strength to Weight: Bending, points 50 to 57
49
Thermal Diffusivity, mm2/s 3.2
3.2
Thermal Shock Resistance, points 79 to 98
72

Alloy Composition


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Aluminum (Al), % 2.5 to 3.5
3.5 to 4.5
Carbon (C), % 0 to 0.050
0 to 0.080
Chromium (Cr), % 2.5 to 3.5
0
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.25
1.2 to 1.8
Nitrogen (N), % 0 to 0.050
0 to 0.030
Oxygen (O), % 0 to 0.13
0.2 to 0.3
Tin (Sn), % 2.5 to 3.5
0
Titanium (Ti), % 72.6 to 78.5
89.9 to 93.1
Vanadium (V), % 14 to 16
2.0 to 3.0
Residuals, % 0 to 0.4
0 to 0.4