Ti-6Al-4V Grade 5 Seamless Titanium Tube – Precision Tolerances & Full Traceability
ASTM B861-24 | UNS R56400 | Custom OD/WT Precision | EN 10204 3.1 Certification
As a leading titanium tube manufacturer and ASTM B861 seamless titanium pipe supplier, we engineer Ti-6Al-4V (Grade 5) seamless titanium tubes for critical applications that demand precision tolerances beyond standard ASTM B861 requirements. Manufactured via cold rolling/pilgering combined with vacuum annealing, our tubes deliver superior strength-to-weight ratio (tensile strength up to 895 MPa / 130 ksi), exceptional corrosion resistance, and complete freedom from surface embrittlement.
Unlike standard products, we specialize in custom tight tolerances on outer diameter (OD), wall thickness (WT), straightness, and ellipticity per customer drawings. As a trusted titanium tube exporter and Grade 5 titanium pipe factory, each tube undergoes 100% ultrasonic testing (UT), hydrostatic testing, and full mechanical property verification, with EN 10204 Type 3.1 certification and complete heat-to-tube traceability. We serve as a reliable titanium tubing vendor offering seamless titanium tubing for sale to engineering and procurement professionals worldwide.
Key Applications: Aerospace hydraulic systems | Marine engineering | Chemical processing equipment | Heat exchangers | Medical devices
Why Choose Us as Your Titanium Tube Supplier?
- Precision That Meets Your Exact Specifications
We don't just "meet ASTM B861"—we guarantee dimensional tolerances tighter than standard. Our cold-drawn/pilgered manufacturing process delivers consistent accuracy across the full tube length, eliminating the variations common in standard production. This is why procurement teams choose us as their precision titanium tube supplier for demanding projects.
- Vacuum Annealing – Zero Alpha-Case Guarantee
Titanium has a high chemical affinity for oxygen at elevated temperatures, which can form a brittle surface layer called "alpha-case" that compromises structural integrity. Our high-precision vacuum annealing furnaces isolate the material from atmospheric gases, completely preventing alpha-case formation. This is verified via metallographic inspection on every batch. Our titanium pipe manufacturer expertise ensures every tube meets the highest surface integrity standards.
- 100% Traceability from Sponge to Finished Tube
Every tube carries a unique heat number, batch number, and tube number. With EN 10204 Type 3.1 certification, we provide full material test reports (MTC) containing actual chemical analysis and mechanical test results, not generic certifications. As an ISO 9001 certified titanium tube factory, full traceability is guaranteed from raw material to final delivery.
Comprehensive NDT Testing In-House
- All testing—including 100% ultrasonic testing (UT), hydrostatic testing, tensile, flattening, and bending tests—is performed in our ISO 9001-certified facility. Individual test records are provided for each tube. We are a one-stop titanium tube stockist with complete in-house testing capabilities, eliminating third-party delays.
Technical Specifications
Material & Standard Compliance
| Parameter | Specification |
|---|---|
| Material | Ti-6Al-4V (Grade 5) / UNS R56400 |
| Standard | ASTM B861-24 / ASME SB-861 |
| Condition | Annealed (stress-relieved) |
| Density | 4.43 g/cm³ |
| Tensile Strength | ≥ 895 MPa (130 ksi) |
| Yield Strength (0.2% offset) | ≥ 828 MPa (120 ksi) |
Chemical Composition (Ti-6Al-4V Grade 5)
| Element | Content |
|---|---|
| Titanium (Ti) | Balance |
| Aluminum (Al) | 5.50 – 6.75% |
| Vanadium (V) | 3.50 – 4.50% |
| Iron (Fe) | ≤ 0.40% |
| Oxygen (O) | ≤ 0.20% |
| Carbon (C) | ≤ 0.08% |
| Nitrogen (N) | ≤ 0.05% |
| Hydrogen (H) | ≤ 0.015% |
Dimensional Capabilities – Your Specifications, Our Guarantee
We confirm the following capabilities for your custom requirements:
| Parameter | Our Commitment | Notes |
|---|---|---|
| A. Outer Diameter (OD) Tolerance | 150.00 ±0.30 mm – Guaranteed | Precision cold-drawn/pilgered; tighter tolerances (±0.05mm) available |
| B. Wall Thickness (WT) Tolerance | 5.00 ±0.25 mm – Guaranteed | Consistent throughout the full tube length |
| C. Minimum Local Wall Thickness | ≥4.75 mm – Guaranteed | Verified by 100% ultrasonic thickness measurement |
| D. 100% UT on Full Length (3410mm) | Yes – Full-length coverage | Per ASTM E213 / AMS 2631 with custom acceptance levels |
| E. Hydrostatic Test per Tube | Yes – Individual records | Each tube tested; single-tube test reports provided |
| F. Alpha-Case Control | Vacuum Annealing + Verification | No alpha-case layer; validated by metallographic examination |
| G. EN 10204 Type 3.1 Certificate | Yes – With actual test results | Chemical, tensile, flattening results per heat/batch |
| H. Full Traceability | Heat No. / Batch No. / Tube No. | Complete from raw sponge to finished pipe |
Standard vs. Our Precision Tolerances
| Dimension | ASTM B861 Standard Tolerance | Our Custom Tolerance |
|---|---|---|
| OD (150mm) | ±0.794mm (over 102-203mm range) | ±0.30mm |
| Wall Thickness | ±12.5% of nominal | ±0.25mm (5%) |
Quality Testing & NDT Capabilities
100% Ultrasonic Testing (UT)
Full-length coverage on every tube (up to 6,000mm+ length)
Applicable standard: ASTM E213 or AMS 2631 (customizable)
Acceptance level: Per customer NDT requirements
Defect detection: Longitudinal and transverse flaws
Hydrostatic Testing
Performed on each individual tube
Single-tube test records provided with pressure values
Test pressure calculated per ASTM B861 requirements
Mechanical Testing
Tensile Test (yield strength, tensile strength, elongation)
Flattening Test – confirms ductility and seam integrity
Bending Test – verifies formability
Hardness Test
100% Surface Inspection + Penetrant Testing (PT)
Visual inspection for surface defects
Penetrant testing (preferred per customer request) available
In-House Testing Equipment
| Test Type | Equipment | Standard |
|---|---|---|
| Chemical Analysis | OES Spectrometer | ASTM E2371 |
| Mechanical Testing | Universal Testing Machine | ASTM E8 / E21 |
| Ultrasonic Testing | UT Flaw Detector | ASTM E213 |
| Hydrostatic Test | Hydrostatic Test Machine | ASTM B861 |
| Metallographic | Microscope | ASTM E3 |
Customization Capabilities
| Customization Option | Range |
|---|---|
| Outer Diameter | Up to 300mm (customizable) |
| Wall Thickness | 0.5 – 20mm |
| Length | Up to 18,000mm (custom cut) |
| Tolerances | OD ±0.02mm, WT ±0.05mm (on request) |
| Surface Finish | Pickled, Polished, Bright, Sandblasted |
| Testing | UT, PT, ET, Hydrostatic – customizable per NDT Level |
Documentation & Traceability
EN 10204 Type 3.1 Certificate
Our ISO 9001 certification and compliance with European material standards authorize us to issue EN 10204 Type 3.1 certificates, containing:
Actual chemical composition analysis
Actual mechanical test results (tensile, yield, elongation)
Heat number and batch identification
Customer name printed on certificate (per EN 10204-3.1 requirement)
"EN10204-3.1 certificate is the material standard—a 'green code' for export. Only companies that obtain ISO 9001 from EU authorized certification bodies and whose metal materials comply with European material specifications can issue this certificate."
Full Traceability Chain
Sponge Titanium → Ingot → Extruded Hollow Billet → Cold Rolling/Pilgering → Vacuum Annealing → Final Inspection → Shipment
Every stage documented and traceable. Batch/Heat/Tube numbers linked throughout production.
Sample Documentation Available
MTC 3.1 Certificate Sample
UT Test Report Sample
Hydrostatic Test Report Sample
Dimensional Inspection Report
FAQ – Your Questions Answered
Q1: What is your Minimum Order Quantity (MOQ)?
A: We offer flexible MOQ starting from 1 piece for prototype development. For production orders, MOQ varies by size and specification—contact us with your requirements.
Q2: What is your standard delivery lead time?
A: Typical lead time is 15–30 days after order confirmation, depending on quantity and custom tolerances. Rush orders may be available.
Q3: Where are your products manufactured?
A: Our manufacturing facility is located in Shaanxi, China, with over 1,200 tons annual titanium alloy tube production capacity.
Q4: Country of Origin?
A: China. Our products are exported to over 40 countries worldwide.
Q5: What is the difference between ASTM B861 standard tolerance and your custom tolerance?
A: ASTM B861 allows OD tolerance of ±0.794mm for 150mm diameter tubes. We guarantee ±0.30mm—significantly tighter—plus custom wall thickness tolerance of ±0.25mm versus the standard ±12.5% of nominal wall thickness.
Q6: What is alpha-case and how do you prevent it?
A: Alpha-case is a brittle, oxygen-enriched surface layer that forms when titanium is heated in air. Our vacuum annealing furnace isolates the titanium from atmospheric gases, eliminating alpha-case formation entirely. Verification is performed via metallographic inspection.
Q7: Can you provide 100% UT testing on the full tube length?
A: Yes. Our UT equipment covers the full length of each tube, up to 6,000mm+. Testing is performed per ASTM E213 or AMS 2631 with acceptance levels customized to your requirements.
Q8: Do you provide individual test reports for each tube?
A: Yes. Every tube receives an individual hydrostatic test record and UT report. Batch-level MTC 3.1 certificates include actual test results for each heat.
Q9: What payment terms do you accept?
A: T/T, L/C, D/A, D/P, Western Union (negotiable per order).
Q10: What packaging do you use?
A: Standard export packaging: wooden crates with anti-corrosion paper, protective foam inner packing, and plastic end caps. Special packaging available on request.
Request a Quote
Ready to discuss your custom Ti-6Al-4V tube requirements?
Please provide:
Required OD / WT / Length
Tolerances (if different from standard)
Quantity (pieces or total length)
Testing requirements (UT, PT, Hydrostatic, etc.)
Drawings (PDF/DWG accepted)
We respond within 24 hours with a comprehensive quotation, technical proposal, and sample documentation.
