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Titanium Gr 7

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Titanium Gr 7

Titanium alloys have several advantageous attributes that allow their use in industries like automobile, consumer electronics, military, aerospace, medical, marine, and sports equipment.

Grade 7 Ti-0.15Pd alloy is highly resistant to corrosion in reducing acids and localized attack in hot halide media. The presence of palladium helps to enhance the alloy’s corrosion resistance. This alloy is similar to grade 2, and possesses medium strength and ductility.

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Description

The following sections will discuss in detail about grade 7 Ti-0.15Pd alloy.

Chemical Composition

The chemical composition of grade 7 Ti-0.15Pd alloy is outlined in the following table.

Element Content (%)
Iron, Fe 0.3
Oxygen, O 0.25
Palladium, Pd 0.12-0.25
Carbon, C 0.08
Nitrogen, N 0.03
Hydrogen, H 0.015
Other, total 0.4
Titanium, Ti Balance

Physical Properties

The physical properties of grade 7 Ti-0.15Pd alloy are tabulated below.

Properties Metric Imperial
Density 4.51 g/cm3 0.162 lb/in3

Mechanical Properties

The following table shows mechanical properties of grade 17 Ti-0.05Pd alloy.

Properties Metric Imperial
Tensile strength 485 MPa 70343 psi
Yield strength 350 MPa 50763 psi
Elastic modulus 103 GPa 14938 ksi
Elongation in 50 mm (A5) 28% 28%
Hardness (HV) 150 150

Thermal Properties

The thermal properties of grade 7 Ti-0.15Pd alloy are tabulated below.

Properties Metric Imperial
Thermal conductivity (room temperature) 20.8 W/mK 144 BTU in/hr.ft².°F

Fabrication and Heat Treatment

Welding

Annealing

Annealing of this material can be performed by heating to 650-760°C (1202-1400°F) for 6 min -2 h and then air cooled. In case stress relieving is required, the material has to be heated to 480-595°C (896-1103°F) for 15 min – 4 h, and then air cooled.

Applications

Grade 7 Ti-0.15Pd alloy is used in the following application areas:

  • Anode/cathode/cell components
  • Chemical processing equipment
  • Air pollution control equipment
  • Pulp/paper bleaching/washing equipment
  • Hydrometallurgical extraction/electrowinning
  • Desalination, brine concentration/evaporation

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