ASTM B861 Gr.2 / UNS R50400 Titanium Seamless Pipe Corrosion-Resistant Pipe

ASTM B861 Gr.2 / UNS R50400 Titanium Seamless Pipe Corrosion-Resistant Pipe

1. Introduction and Standard Specification

This product is a Seamless Titanium Pipe manufactured according to ASTM B861, the leading standard specification for titanium and titanium alloy seamless pipe intended for general corrosion-resisting and elevated temperature service.

Specifically, this pipe is made from Grade 2 Titanium, which is classified under the unified numbering system as UNS R50400. Grade 2 is commercially pure, unalloyed titanium, known for its excellent balance of strength, ductility, and weldability. It is the most common grade of titanium used in industrial applications. The standard mandates rigorous testing, including tension, flattening, bend, and hydrostatic tests, to ensure material integrity and performance.

2. Material Composition and Advantages

As an unalloyed "commercially pure" titanium, Grade 2 offers superior properties:

• Excellent Corrosion Resistance: It rapidly forms a stable, protective oxide layer in air and water, offering exceptional resistance to chlorides, oxidizing acids, and saltwater environments.

• High Strength-to-Weight Ratio: Titanium offers a strength comparable to some steels but is about 40% lighter, making these pipes efficient for weight-sensitive designs.

• Good Fabricability: It has excellent ductility and can be easily welded and formed.

• Wide Temperature Range: Maintains good mechanical properties from cryogenic temperatures up to approximately 600°F (315°C).

3. Chemical Composition & Typical Mechanical Properties

The following tables outline the core specifications for ASTM B861 Grade 2 Titanium. Please note: The values below are based on typical industry data for Grade 2 Ti. For guaranteed certified values for a specific production lot, please refer to the Mill Test Certificate (MTC) provided with your order.

Typical Chemical Composition (Weight % Maximum, Unless Noted):

Typical Room Temperature Mechanical Properties:

4. Product Applications

Due to its outstanding corrosion resistance and material properties, this seamless titanium pipe is widely used in demanding industries:

• Chemical & Petrochemical Processing: For heat exchangers, reactors, and piping systems handling chlorides, nitric acid, and other corrosive media.

• Marine & Offshore: In seawater cooling systems, desalination plants, and offshore platform components.

• Power Generation: For condenser tubes and piping in fossil fuel and nuclear power plants.

• Aerospace: In hydraulic and pneumatic systems where weight and reliability are critical.

• Medical & Pharmaceutical: For high-purity fluid transfer systems in equipment manufacturing.

• Pollution Control: In scrubbers and piping for flue gas desulfurization (FGD) systems.