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Grade 7 Titanium vs. Grade 16 Titanium

Both grade 7 titanium and grade 16 titanium are titanium alloys. Both are furnished in the annealed condition. Their average alloy composition is basically identical. 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 7 titanium and the bottom bar is grade 16 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 24
23
Fatigue Strength, MPa 250
240
Poisson's Ratio 0.32
0.32
Reduction in Area, % 34
34
Shear Modulus, GPa 38
38
Shear Strength, MPa 270
250
Tensile Strength: Ultimate (UTS), MPa 420
400
Tensile Strength: Yield (Proof), MPa 340
340

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 22
22
Thermal Expansion, µm/m-K 9.2
9.2

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 4.5
4.5
Embodied Carbon, kg CO2/kg material 47
36
Embodied Energy, MJ/kg 800
600
Embodied Water, L/kg 470
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
86
Resilience: Unit (Modulus of Resilience), kJ/m3 560
550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 26
25
Strength to Weight: Bending, points 28
27
Thermal Diffusivity, mm2/s 8.9
8.9
Thermal Shock Resistance, points 31
29

Alloy Composition


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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
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.25
0 to 0.25
Palladium (Pd), % 0.12 to 0.25
0.040 to 0.080
Titanium (Ti), % 98.7 to 99.88
98.8 to 99.96
Residuals, % 0 to 0.4
0 to 0.4