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Grade 7 Titanium vs. Titanium 15-3-3-3

Both grade 7 titanium and titanium 15-3-3-3 are titanium alloys. They have 76% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade 7 titanium and the bottom bar is titanium 15-3-3-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 24
5.7 to 8.0
Fatigue Strength, MPa 250
610 to 710
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 38
39
Shear Strength, MPa 270
660 to 810
Tensile Strength: Ultimate (UTS), MPa 420
1120 to 1390
Tensile Strength: Yield (Proof), MPa 340
1100 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 420
390
Maximum Temperature: Mechanical, °C 320
430
Melting Completion (Liquidus), °C 1660
1620
Melting Onset (Solidus), °C 1610
1560
Specific Heat Capacity, J/kg-K 540
520
Thermal Conductivity, W/m-K 22
8.1
Thermal Expansion, µm/m-K 9.2
9.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
2.3

Otherwise Unclassified Properties

Density, g/cm3 4.5
4.8
Embodied Carbon, kg CO2/kg material 47
59
Embodied Energy, MJ/kg 800
950
Embodied Water, L/kg 470
260

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
78 to 89
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 35
32
Strength to Weight: Axial, points 26
64 to 80
Strength to Weight: Bending, points 28
50 to 57
Thermal Diffusivity, mm2/s 8.9
3.2
Thermal Shock Resistance, points 31
79 to 98

Alloy Composition


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Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0 to 0.080
0 to 0.050
Chromium (Cr), % 0
2.5 to 3.5
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.3
0 to 0.25
Nitrogen (N), % 0 to 0.030
0 to 0.050
Oxygen (O), % 0 to 0.25
0 to 0.13
Palladium (Pd), % 0.12 to 0.25
0
Tin (Sn), % 0
2.5 to 3.5
Titanium (Ti), % 98.7 to 99.88
72.6 to 78.5
Vanadium (V), % 0
14 to 16
Residuals, % 0 to 0.4
0 to 0.4