ASTM B862 Titanium Alloy Welded Pipe
Titanium tubing are delivered in straight lengths or as U-bent tubing. Titanium spiral tubing, titanium capillary tubing are available by requirement. Length: 4000mm; 6000mm; 12000mm; Multi-length and short cutting can be provided. Max developed length: 20 meters.
Description
What Is ASTM B862?
ASTM B862 is the standard specification for welded titanium and titanium alloy pipe intended for general corrosion resisting and elevated temperature service. It is the welded counterpart to ASTM B861 (seamless pipe) and is technically equivalent to ASME SB-862, making it suitable for both industrial and pressure vessel code applications.
While ASTM B338 covers welded tubing for condensers and heat exchangers (typically smaller diameters), ASTM B862 covers welded pipe-including larger diameters up to and exceeding 24 inches NPS-designed for piping systems, process lines, and structural applications.
The 33 Grades of ASTM B862
Commercially Pure Grades
| Grade | UNS | Description | Typical Application |
|---|---|---|---|
| Grade 1 | R50250 | Unalloyed, low oxygen | Maximum formability, chemical piping |
| Grade 2 | R50400 | Unalloyed, standard oxygen | Most widely used; seawater, general service |
| Grade 2H | R50400 | Grade 2, 58 ksi min UTS | Pressure vessel service |
| Grade 3 | R50550 | Unalloyed, medium oxygen | Higher strength, industrial piping |
| Grade 7 | R52400 | Ti + 0.12–0.25% Pd | Enhanced crevice corrosion resistance |
| Grade 7H | R52400 | Grade 7, 58 ksi min UTS | Pressure vessel, severe corrosion |
| Grade 11 | R52250 | Ti + Pd, low oxygen | Reducing acids, high formability |
| Grade 16 | R52402 | Ti + 0.04–0.08% Pd | Cost effective Pd alternative |
| Grade 16H | R52402 | Grade 16, 58 ksi min UTS | Pressure vessel |
| Grade 17 | R52252 | Ti + Pd, low oxygen | Formability + Pd benefit |
| Grade 26 | R52404 | Ti + 0.08–0.14% Ru | Ruthenium stabilized, crevice resistance |
| Grade 26H | R52404 | Grade 26, 58 ksi min UTS | Pressure vessel |
| Grade 27 | R52254 | Ti + Ru, low oxygen | High formability + Ru |
| Grade 33 | R53442 | Ti-0.4Ni-0.015Pd-0.025Ru-0.15Cr | Mixed stabilizer, specialty corrosion |
| Grade 34 | R53445 | Ti-0.4Ni-0.015Pd-0.025Ru-0.15Cr | Higher strength version |
| Grade 37 | R52815 | Ti-1.5Al | Medium strength, weldable |
| Grade 39 | R53390 | Ti-0.25Fe-0.4Si | Cost effective CP alternative |
Alpha-Beta and Near-Alpha Alloys
| Grade | UNS | Description | Typical Application |
|---|---|---|---|
| Grade 5 | R56400 | Ti-6Al-4V | High strength, aerospace grade piping |
| Grade 9 | R56320 | Ti-3Al-2.5V | Medium strength, hydraulics, thin wall |
| Grade 18 | R56322 | Ti-3Al-2.5V + 0.04–0.08% Pd | Corrosion resistant alloy piping |
| Grade 23 | R56407 | Ti-6Al-4V ELI | Extra low interstitial, fracture toughness |
| Grade 24 | R56405 | Ti-6Al-4V + 0.04–0.08% Pd | High strength + Pd corrosion benefit |
| Grade 25 | R56403 | Ti-6Al-4V + Ni + Pd | Enhanced corrosion, sour service |
| Grade 28 | R56323 | Ti-3Al-2.5V + 0.08–0.14% Ru | Ru stabilized alloy |
| Grade 29 | R56404 | Ti-6Al-4V ELI + 0.08–0.14% Ru | High strength + Ru corrosion resistance |
| Grade 38 | R54250 | Ti-4Al-2.5V-1.5Fe | High strength, cost effective alloy |
Beta and Near-Beta Alloys
| Grade | UNS | Description | Typical Application |
|---|---|---|---|
| Grade 19 | R58640 | Ti-3Al-8V-6Cr-4Zr-4Mo | High strength, deep sour gas wells |
| Grade 20 | R58645 | Grade 19 + 0.04–0.08% Pd | Sour service + Pd corrosion benefit |
| Grade 21 | R58210 | Ti-15Mo-3Al-2.7Nb-0.25Si | High strength, oxidation resistance |
Chemical Composition
ASTM B862 Grade 2 (UNS R50400) – Representative Chemistry:
| Element | Composition (wt%) |
|---|---|
| Titanium | Balance |
| Nitrogen, max | 0.03 |
| Carbon, max | 0.08 |
| Hydrogen, max | 0.015 |
| Iron, max | 0.30 |
| Oxygen, max | 0.25 |
| Residuals, each max | 0.10 |
| Residuals, total max | 0.40 |
Mechanical Properties
ASTM B862 Grade 2 – Minimum Requirements:
| Property | Value |
|---|---|
| Tensile Strength | 344 MPa (49,900 psi) |
| Yield Strength (0.2% offset) | 275 MPa (39,900 psi) |
| Elongation | 20% |
Alloy Grade Examples:
| Grade | Tensile Strength (min) | Yield Strength (min) | Elongation (min) |
|---|---|---|---|
| Grade 5 (Annealed) | 895 MPa | 828 MPa | 10% |
| Grade 9 (Annealed) | 620 MPa | 520 MPa | 15% |
| Grade 12 (Annealed) | 483 MPa | 345 MPa | 18% |
| Grade 19 (ST Aged) | 1190 MPa | 1100 MPa | 5% |
ASTM B862 vs. ASTM B338 vs. ASTM B861
| Specification | Product Form | Typical Size | Primary Application |
|---|---|---|---|
| ASTM B862 | Welded Pipe | 0.5–36 in NPS | General piping systems, process lines |
| ASTM B338 | Welded/Seamless Tube | ≤ 3 in OD | Condensers, heat exchangers |
| ASTM B861 | Seamless Pipe | All NPS | High integrity seamless piping |
Selection Guide:
Large diameter titanium piping? → ASTM B862
Heat exchanger tubes? → ASTM B338
Seamless construction required? → ASTM B861
ASME Code application? → ASME SB-862 (identical requirements)
Our Factory
Our factory is a specialized titanium mill products manufacturing facility, fully dedicated to the production of seamless and welded tubes, plate, sheet, bar, wire, and strip across a complete range of commercially pure and alloy titanium grades. Equipped with advanced cold rolling mills, continuous welding lines, precision slitting lines, and in-house heat treatment furnaces, we maintain full control over every stage of production-from raw material inspection to final non-destructive testing. Our quality system is certified to ISO 9001, and all products are manufactured and tested in accordance with international standards including ASTM, ASME, AMS, MIL, and GB/T, with mill test reports providing full traceability. With the capacity to handle both large-volume production runs and custom-engineered orders, we serve global customers across the aerospace, chemical processing, desalination, marine engineering, power generation, and medical implant industries.
about us
Our team is composed of highly experienced metallurgists, welding engineers, production specialists, and technical sales professionals with decades of combined expertise in the titanium manufacturing industry. From raw material selection and process optimization to final inspection and certification, every member is committed to precision, traceability, and continuous improvement. Our welding engineers are qualified to international standards, our quality control team is trained in advanced NDT methods including eddy current and ultrasonic testing, and our technical sales engineers work directly with customers during the specification phase to recommend the most cost-effective grade, product form, and manufacturing route. Whether responding to complex RFQs, coordinating third-party inspections, or troubleshooting field applications, our team delivers reliable technical support, on-time delivery, and fully certified documentation for every order-from standard stock sizes to custom-engineered solutions for aerospace, marine, chemical, and medical applications worldwide.
Professionally recognized team
Customer visits
GNEE Participation in Exhibitions
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