ASTM B862 Ti2 Titanium Welded Pipes for Boiler Heat Exchanger
Oct 28, 2025
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ASTM B862 is a specification covering the requirements for welded titanium and titanium alloy piping. Among titanium alloy grades, Grade Ti2 (Titanium Alloy Grade 2) stands out as one of the most widely used due to its excellent strength, corrosion resistance, and weldability.
GNEE supplies titanium welded pipes compliant with ASTM B862 Ti2 standard, manufactured from Commercially Pure Titanium (Grade 2, UNS R50400) using Tungsten Inert Gas (GTAW) or Plasma welding processes, followed by annealing to eliminate stresses. These pipes have a density of approximately 4.51 g/cm³ (about 60% that of steel), with an operating temperature range of 300–350°C. Surface treatment options include pickled annealed or bright annealed finishes, featuring smooth inner walls free of oxide residues to effectively reduce scaling and enhance heat transfer efficiency.
ASTM B862 Ti2 titanium pipes are particularly suitable for environments with high temperatures, high pressures, and prolonged exposure to corrosive media-such as seawater desalination units, power plant condenser systems, and chemical reactor heat exchange installations-offering advantages of extended service life and reduced maintenance costs.
ASTM B862 Gr.2 Titanium Alloy Welded Pipe Specification
| ASTM B862 Titanium Alloy Pipe Specification | ASTM B338 / ASTM B861 / ASTM B862 / ASME SB338 / ASME SB861 / ASME SB862 |
| ASTM B862 Titanium Alloy Pipe Grades | Grade 1 , Grade 2, Grade 3 , Grade 5 , Grade 7, Grade 8, Grade 9, Grade 11, Grade 12, Grade 23, UNS R50250, UNS R50400, UNS R56400, UNS R52400, UNS R56320, UNS R53400, Ti-6Al-4V, C-130AM, C-110M, Ti-4Al-3Mo-1V, Ti-6Al-2Sn-4Zr-2Mo, Ti-8Al-1Mo-1V, Ti-13V-11Cr-3Al, Ti-15V-3Cr-3Sn-3Al |
| ASTM B862 B862 Titanium Alloy Pipe Type | Hot Rolled / Cold Drawn / Welded / ERW |
| ASTMB862 Titanium Alloy Pipe Outer Diameter Size | Seamless - 1/4"NB to 12"NB (Nominal Bore Size) Welded / ERW- 1"NB to 16"NB (Nominal Bore Size) |
| ASTM B862 Titanium Alloy Pipe Wall Thickness | Schedule 10 to Schedule 160 |
| ASTM B862 Titanium Alloy Pipe Length | 5 to 7 Meters, 09 to 13 Meters, Single Random Length, Double Random Length And Customize Size. |
| ASTM B862 Titanium Alloy Pipe Pipe Ends | Plain Ends / Beveled Ends |
| ASTM B862 Titanium Alloy Pipe Delivery Conditions | As Rolled, Cold Drawn, Hot Finish, Stress Relieved, Annealed, Hardened, Tempered |
| ASTM B862 Titanium Alloy Pipe Coating | Electropolish, Mechanical Polish, Satin Finish, Passivated |
| ASTM B862 Titanium Alloy Pipe Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM And ASME |
| ASTM B862 Titanium Alloy Pipe Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| ASTM B862 Titanium Alloy Pipe Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
Chemical Composition of ASTM A862 Ti2 Welded Pipe
| Element | Maximum Composition (%) |
|---|---|
| Titanium (Ti) | Balance |
| Iron (Fe) | 0.30 |
| Carbon (C) | 0.08 |
| Nitrogen (N) | 0.03 |
| Hydrogen (H) | 0.015 |
| Oxygen (O) | 0.25 |
ASTM B862 Gr.2 Titanium Alloy Welded Pipe Mechanical Properties
| Grade | Tensile Strength, min | Yield Strength (0.2% Offset) | Elongation 2 in. or 50 mm | |||||
| min | max | |||||||
| Ksi | (Mpa) | Ksi | (Mpa) | Ksi | (Mpa) | gage length min % | ||
| Grade 1 | 35 | (240) | 25 | (170) | 45 | (310) | 24 | |
| Grade 2 | 50 | (345) | 40 | (275) | 65 | (450) | 20 | |
Testing items for titanium tube and titanium pipe:
Chemical composition and mechanical properties
Bending, flaring, flattening, hydraulic, eddy current, ultrasonic (against different specification or specific requirement by customer)
Certificate:
To be provided according to EN 10204 3.1 or against customer's demand
Primarily used specification for titanium tube and titanium pipe:
ASTM B861 (Titanium and titanium alloy seamless pipe)
ASTM B862 (Titanium and titanium alloy welded pipe)
ASTM B338 (Seamless and welded titanium & titanium alloy tubes for condensers and heat exchangers)
GNEE strictly adheres to ASTM B862/ASME SB862 standards and offers factory warranty and third-party testing reports (such as eddy current testing, hydrostatic testing, and chemical composition analysis) to ensure stable and reliable product quality, meeting the corrosion resistance, lightweight, and precise dimensional requirements of heat exchangers and condensers.Email: sales@gneestainless.com
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