ASTM B861 titanium tube is a high-performance titanium tubular product designed for applications requiring excellent corrosion resistance, high strength, lightweight construction, and long-term reliability.

Titanium tubes manufactured according to ASTM B861 are widely used in chemical processing, marine engineering, power generation, aerospace, desalination, and other demanding industrial environments.

Titanium naturally forms a stable and highly adherent oxide film on its surface. This passive oxide layer provides outstanding corrosion resistance in many aggressive media, including seawater, chloride-containing solutions, oxidizing environments, and various acids and alkaline solutions.

Compared with many conventional metallic materials, titanium offers an excellent combination of low density, high specific strength, and superior corrosion resistance.

Product Features

ASTM B861 titanium tubes offer several important advantages:

Excellent corrosion resistance

Outstanding resistance to seawater and chloride-containing environments

High strength-to-weight ratio

Low density

Good mechanical properties

Excellent heat transfer performance

Good fabrication and welding characteristics

Long service life

Suitable for demanding industrial environments

Titanium tubing is particularly suitable for applications where stainless steel or conventional alloys may suffer from corrosion-related degradation.

Material Grades

Titanium tubes can be manufactured from commercially pure titanium and titanium alloys, including:

Grade	Material Type	Typical Characteristics
Gr1	Commercially Pure Titanium	Excellent ductility and corrosion resistance
Gr2	Commercially Pure Titanium	Excellent balance of strength and corrosion resistance
Gr3	Commercially Pure Titanium	Higher strength than Gr1 and Gr2
Gr5	Ti-6Al-4V	High strength titanium alloy
Gr7	Ti-Pd Alloy	Enhanced corrosion resistance
Gr9	Ti-3Al-2.5V	Medium-strength titanium alloy
Gr12	Ti-Mo-Ni Alloy	Improved corrosion resistance in reducing environments

Other titanium grades can be supplied according to customer requirements.

Manufacturing Methods

Titanium tubes can be manufactured using different processes depending on the required dimensions, material grade, and application.

Typical manufacturing methods include:

Cold rolling

Hot extrusion

Piercing

Cold drawing

Welding

Seamless tube forming

The manufacturing process is selected to ensure that the finished product meets the mechanical properties, dimensional tolerances, and inspection requirements specified by the applicable standard and customer specifications.

Heat Treatment

Heat treatment conditions are determined according to the titanium grade, manufacturing process, and final application requirements.

For cold-worked titanium tubes, annealing may be performed to restore ductility and relieve residual stress.

Certain titanium alloys may also be supplied in specialized conditions, including:

Annealed

Stress-relieved

Cold-worked and stress-relieved

Solution-treated

Solution-treated and aged

Aged condition

The final delivery condition can be specified according to ASTM requirements or customer technical specifications.

Titanium Tube Bending Test

For applicable grades and sizes, titanium tubes may undergo bending tests to evaluate ductility and material integrity.

Titanium tubes with a nominal diameter of 2 inches (51 mm) and below may be tested by bending the tube through 90° around a cylindrical mandrel.

The bending test evaluates whether the material can withstand deformation without cracking.

The applicable test requirements depend on the titanium grade, dimensions, and relevant ASTM specification.

Titanium Tube Flattening Test

Flattening tests may be performed to evaluate the ductility and structural integrity of titanium tubes.

During the test, a section of the tube is gradually compressed between two parallel plates at room temperature.

The tube is evaluated for cracking or other defects after deformation.

The required flattened height is determined according to factors including:

Nominal outside diameter

Wall thickness

Material grade

Applicable ASTM requirements

For special titanium alloy grades or non-standard dimensions, flattening test requirements can be determined according to the agreement between the manufacturer and purchaser.

Product Specifications

Parameter	Specification
Product	Titanium Tube
Standard	ASTM B861
Material	Gr1, Gr2, Gr3, Gr5, Gr7, Gr9, Gr12 and other grades
Type	Seamless / Welded
Manufacturing	Cold Rolled / Cold Drawn / Hot Extruded / Welded
Outside Diameter	Customized
Wall Thickness	Customized
Length	Random Length / Fixed Length
Supply Condition	Annealed / Stress Relieved / Customized
Surface	Pickled / Polished / Bright / Machined
Inspection	UT / Eddy Current / Hydrostatic Test / Dimensional Inspection

Custom sizes and technical requirements are available according to customer drawings and project specifications.

Quality Control

Titanium tubes are inspected throughout the production process to ensure material quality, dimensional accuracy, and structural integrity.

Available inspection methods include:

Chemical composition analysis

Mechanical property testing

Dimensional inspection

Ultrasonic testing

Eddy current testing

Hydrostatic testing

Bending testing

Flattening testing

Visual inspection

Additional testing can be arranged according to customer requirements.

Material Test Certificates can be supplied upon request.

Packaging

Titanium tubes are carefully packed to prevent damage during transportation.

Standard packaging options include:

Export plywood cases

Wooden cases

Bundled packaging

Protective wrapping

Customized packaging is available according to customer requirements.

Applications

Heat Exchangers

Titanium tubes are widely used in heat transfer equipment due to their excellent corrosion resistance and long service life.

Typical equipment includes:

Shell-and-tube heat exchangers

Coil heat exchangers

Condensers

Evaporators

Serpentine heat exchangers

Titanium tubing is particularly suitable for seawater cooling and corrosive process media.

Chemical Processing

Titanium tubes are widely used in chemical processing systems handling corrosive fluids.

Typical applications include:

Acid processing

Chloride-containing solutions

Chemical reactors

Process piping

Corrosive fluid transportation

Titanium's stable oxide film provides excellent protection in many aggressive chemical environments.

Marine and Offshore Engineering

Titanium offers excellent resistance to seawater corrosion.

Titanium tubes are commonly used in:

Seawater cooling systems

Marine piping

Offshore platforms

Shipbuilding equipment

Desalination systems

Power Generation

Titanium tubing is widely used in power generation equipment where corrosion resistance and reliability are critical.

Applications include:

Power plant condensers

Heat exchangers

Cooling systems

Nuclear power equipment

Seawater cooling systems

Aerospace Industry

Titanium alloys combine low density with high mechanical strength.

Titanium tubes can be used in aerospace applications such as:

Hydraulic systems

Fuel lines

Structural components

Aircraft systems

The specific titanium grade is selected according to mechanical performance and service environment requirements.

Medical Applications

Certain titanium grades offer excellent biocompatibility and corrosion resistance.

Titanium tubing can be used in specialized medical and biomedical applications, subject to the applicable material standards and regulatory requirements.

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