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Grade 16 (R52402) Titanium

Grade 16 titanium is a titanium alloy formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. R52402 is the UNS number for this material. Additionally, the ASTM designation is Titanium Grade 16.

It has a moderately high thermal conductivity among wrought titaniums. In addition, it has a moderately high ductility and a moderately low tensile strength.

The graph bars on the material properties cards below compare grade 16 titanium to: wrought titaniums (top), all titanium alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Elastic (Young's, Tensile) Modulus

110 GPa 15 x 106 psi

Elongation at Break

23 %

Fatigue Strength

240 MPa 35 x 103 psi

Poisson's Ratio

0.32

Reduction in Area

34 %

Shear Modulus

38 GPa 5.5 x 106 psi

Shear Strength

250 MPa 37 x 103 psi

Tensile Strength: Ultimate (UTS)

400 MPa 58 x 103 psi

Tensile Strength: Yield (Proof)

340 MPa 50 x 103 psi

Thermal Properties

Latent Heat of Fusion

420 J/g

Maximum Temperature: Mechanical

320 °C 600 °F

Melting Completion (Liquidus)

1660 °C 3020 °F

Melting Onset (Solidus)

1610 °C 2930 °F

Specific Heat Capacity

540 J/kg-K 0.13 BTU/lb-°F

Thermal Conductivity

22 W/m-K 13 BTU/h-ft-°F

Thermal Expansion

9.2 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

3.6 % IACS

Electrical Conductivity: Equal Weight (Specific)

7.2 % IACS

Otherwise Unclassified Properties

Density

4.5 g/cm3 280 lb/ft3

Embodied Carbon

36 kg CO2/kg material

Embodied Energy

600 MJ/kg 260 x 103 BTU/lb

Embodied Water

230 L/kg 27 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

86 MJ/m3

Resilience: Unit (Modulus of Resilience)

550 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

35 points

Strength to Weight: Axial

25 points

Strength to Weight: Bending

27 points

Thermal Diffusivity

8.9 mm2/s

Thermal Shock Resistance

29 points

Alloy Composition

Titanium (Ti) 98.8 to 99.96
Iron (Fe) 0 to 0.3
Oxygen (O) 0 to 0.25
Palladium (Pd) 0.040 to 0.080
Carbon (C) 0 to 0.080
Nitrogen (N) 0 to 0.030
Hydrogen (H) 0 to 0.015
Residuals 0 to 0.4

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

Titanium Alloys: Modelling of Microstructure, Properties, and Applications, Wei Sha and Savko Malinov, 2009

ASTM B861: Standard Specification for Titanium and Titanium Alloy Seamless Pipe

ASTM B381: Standard Specification for Titanium and Titanium Alloy Forgings

ASTM B265: Standard Specification for Titanium and Titanium Alloy Strip, Sheet, and Plate

ASTM B348: Standard Specification for Titanium and Titanium Alloy Bars and Billets

Titanium and Titanium Alloys: Fundamentals and Applications, Christoph Leyens and Manfred Peters (editors), 2003

Titanium, 2nd ed., G. Lutjering and J. C. Williams, 2007

Environmental Degradation of Advanced and Traditional Engineering Materials, Lloyd H. Hihara et al., 2014.