ASTM B861 Titanium Seamless Pipes

ASTM B861 defines the requirements for titanium and titanium-alloy seamless pipes used where high corrosion resistance and elevated-temperature strength are critical. If you need consistent chemistry, proven mechanical properties, and rigorous testing for pressurized service, ASTM B861 (also written as astm b861) is the go-to specification.

What Is ASTM B861?

• Specifies a seamless manufacturing route (no longitudinal weld seam).

• Applicable to commercially pure (CP) titanium and multiple titanium alloy grades.

• Includes mandatory mechanical properties at room temperature.

• Quality assurance through tension, flattening/bend, and hydrostatic (or NDE) testing.

• Ensures reliable titanium pipe performance for corrosive and high-temperature duties.

Why Choose ASTM B861 Seamless Titanium Pipe?

Core Benefits

• Corrosion resistance: Excellent in seawater, chlorides, many acids, and oxidizing media.

• High strength-to-weight ratio: Lighter systems with comparable or better strength than many stainless steels.

• Cleanliness & purity: Tight limits on interstitials (O, N, H) safeguard ductility and toughness.

• Pressure integrity: Seamless construction helps minimize leak paths for critical services.

Typical Use Cases

• Chemical & petrochemical: Heat exchangers, transfer lines, pickling systems.

• Aerospace: Environmental control and hydraulic systems where weight saving matters.

• Marine & offshore: Seawater service lines, desalination.

• Power & pulp & paper: Flue-gas scrubbers, bleach plants, condensers.

• Pharma & food: Clean process piping resistant to contamination from corrosion.

Grades Covered Under ASTM B861

ASTM B861 covers multiple CP and alloy grades (e.g., Grade 1, 2, 3 for CP titanium; Grade 5 (Ti-6Al-4V), Grade 7/16 (Pd-enhanced for corrosion), Grade 12 (Ti-0.3Mo-0.8Ni), Grade 9 (Ti-3Al-2.5V), ELI variants, and more).

Quick Pointers When Selecting a Grade

(Choose the grade based on medium, temperature, pressure, and fabrication needs.)

Supply Conditions & Heat Treatment (Overview)

• Supplied in conditions such as annealed, cold-worked & stress-relieved, solution-treated, aged, or transformed beta.

• Condition influences strength, ductility, and dimensional stability—match it to your design and fabrication plan.

Mechanical & Chemical Requirements (What to Expect)

• Minimum tensile/yield strength and elongation set per grade at room temperature.

• Limits on nitrogen, carbon, hydrogen, oxygen, iron, and alloying elements ensure predictable strength and corrosion behavior.

Dimensional Range, Tolerances & Finishes

• Sizes range from small instrument tubing to large process lines.

• OD & wall tolerances meet ASTM limits; tighter tolerances possible on request.

• Plain ends (PE) or beveled ends (BE) for welding.

• Finishes include annealed & pickled, polished, or customized for cleanliness.

Mandatory Tests & Quality Assurance

• Tension (tensile) test

• Flattening / bend tests

• Hydrostatic test (or approved NDE methods)

• Mill Test Certificates summarizing chemistry, mechanical properties, heat treatment & compliance.

ASTM B861 vs. Related Specifications

• ASTM B338: Titanium Tubing (thinner walls / heat exchangers)

• ASTM B862: Welded titanium pipe (cost-efficient, large diameters)

• ASTM B861: Seamless pipe for highest integrity and pressure service

How to Specify ASTM B861 for Your RFQ/PO

• Standard & Grade (e.g., ASTM B861, Grade 2, Grade 5, Grade 7, etc.)

• Dimensions: OD × wall × length; schedule if applicable

• Condition: Annealed / CW & SR / Solution-treated / Aged

• Ends: PE or BE; bevel angle if required

• Testing: Hydrostatic or NDE; additional testing if needed

• Documentation: EN 10204 3.1/3.2 MTC, NACE/ASME notes, traceability

• Surface & Cleanliness: Pickled/polished; oil-free for oxygen service

• Special notes: PMI, tighter tolerances, packaging, export paperwork

Quality Full Work

Titanium Metals specializes in high-quality titanium materials and components for critical industries. Every product is manufactured with precision, tested for strength, corrosion resistance, and purity.

100% Work Satisfication

We deliver premium-grade titanium metals engineered for high performance and long-term reliability. Every product is manufactured with strict quality controls, precise dimensions, and flawless finishing to match international standards.