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Grade 32 (R55111) Titanium

Grade 32 titanium is a titanium alloy formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. R55111 is the UNS number for this material. Additionally, the ASTM designation is Titanium Grade 32.

It has a moderately low melting temperature among the wrought titaniums in the database.

The graph bars on the material properties cards below compare grade 32 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

11 %

Fatigue Strength

390 MPa 57 x 103 psi

Poisson's Ratio

0.32

Reduction in Area

28 %

Shear Modulus

40 GPa 5.8 x 106 psi

Shear Strength

460 MPa 67 x 103 psi

Tensile Strength: Ultimate (UTS)

770 MPa 110 x 103 psi

Tensile Strength: Yield (Proof)

670 MPa 97 x 103 psi

Thermal Properties

Latent Heat of Fusion

410 J/g

Maximum Temperature: Mechanical

310 °C 600 °F

Melting Completion (Liquidus)

1610 °C 2920 °F

Melting Onset (Solidus)

1560 °C 2830 °F

Specific Heat Capacity

550 J/kg-K 0.13 BTU/lb-°F

Thermal Conductivity

7.5 W/m-K 4.3 BTU/h-ft-°F

Thermal Expansion

8.2 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

1.0 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.1 % IACS

Otherwise Unclassified Properties

Base Metal Price

38 % relative

Density

4.5 g/cm3 280 lb/ft3

Embodied Carbon

32 kg CO2/kg material

Embodied Energy

530 MJ/kg 230 x 103 BTU/lb

Embodied Water

180 L/kg 22 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

83 MJ/m3

Resilience: Unit (Modulus of Resilience)

2100 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

35 points

Strength to Weight: Axial

47 points

Strength to Weight: Bending

41 points

Thermal Diffusivity

3.0 mm2/s

Thermal Shock Resistance

63 points

Alloy Composition

Titanium (Ti) 88.1 to 93
Aluminum (Al) 4.5 to 5.5
Zirconium (Zr) 0.6 to 1.4
Tin (Sn) 0.6 to 1.4
Vanadium (V) 0.6 to 1.4
Molybdenum (Mo) 0.6 to 1.2
Iron (Fe) 0 to 0.25
Silicon (Si) 0.060 to 0.14
Oxygen (O) 0 to 0.11
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 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

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015