Grade 9 Titanium Tube | Ti-3Al-2.5V ASTM B338 / B861
Grade 9 titanium tube in Ti-3Al-2.5V for applications such as bicycle frames, aerospace hydraulic lines and lightweight tubing assemblies. RFQs should specify ASTM B338 or B861, OD, wall thickness, length, condition and inspection needs.
- DocumentsMTC and EN 10204 3.1 on request
- TraceabilityHeat number and inspection scope confirmed
- RFQ detailsGrade, standard, size, tolerance, quantity
- PackingExport protection by product form and length
Product Introduction
ASTM B338 / ASTM B861 Grade 9 titanium tubeApplicable standard or RFQ reference
Grade 9, OD, wall, length, route, surface and documentation needCore information needed for quotation
OD, wall thickness, length, tolerance, straightness and cut conditionDimensional review before production
MTC / EN 10204 3.1Traceability documents when required
Acceptance is by the ordered specification. Final grade, chemistry, dimensions, inspection and documentation are confirmed by the purchase specification and mill test certificate.
Grade 9 Titanium Tube for Lightweight Tubing Applications
Grade 9 titanium tube, also known as Ti-3Al-2.5V or TA18, is used where a higher strength-to-weight ratio is required than commercially pure titanium tube can provide. It is commonly specified for bicycle tubing, aerospace-related hydraulic lines, lightweight structures, sporting equipment and other tubing assemblies where strength, fatigue resistance, corrosion resistance and controlled dimensions matter.
Grade 9 tube should be quoted by standard, outside diameter, wall thickness, length, condition and tolerance. The production route may involve hot extrusion, cold rolling or cold drawing depending on the requested size range and final condition.
Grade and Standards
- Material: Grade 9 titanium / Ti-3Al-2.5V / UNS R56320.
- Common standards: ASTM B338 for condenser and heat-exchanger tubing, ASTM B861 for seamless titanium pipe, AMS 4943 or customer specifications where applicable.
- Condition: annealed or cold-worked stress-relieved condition according to the order requirement.
- Surface condition: pickled, polished or as specified by drawing.
Available Size Information
Grade 9 tube can be quoted by outside diameter, inside diameter, wall thickness and length. For precision tubing, include tolerance, straightness, ovality, surface finish and end condition. If the tube will be bent, welded, swaged or machined, include the downstream process so the material condition can be reviewed.
Common Applications
- Bicycle frame and lightweight structural tubing
- Aerospace-related hydraulic and fluid lines where the specification allows Grade 9
- Sporting, marine and industrial lightweight tube assemblies
- Corrosion-resistant tube parts requiring higher strength than Grade 2
Inspection and Documentation
Tube orders can be quoted with mill test certificate, chemical composition, mechanical properties, heat-number traceability, dimensional inspection and visual surface inspection. For critical tubing, specify whether ultrasonic testing, eddy-current testing, hydrostatic testing, PMI or third-party inspection is required.
Packaging and Export
Titanium tubes are normally bundled or packed in wooden cases depending on length, wall thickness and surface finish. Ends can be protected when required, and bundles can be marked by heat number, size and purchase order for traceable receiving inspection.
RFQ Information Needed
- Grade 9 / Ti-3Al-2.5V requirement and applicable standard
- OD, wall thickness, length and tolerance
- Condition, surface finish and end requirement
- Application, bending or machining process if known
- MTC, EN 10204 3.1, NDT, PMI or third-party inspection requirements
FAQ
How is Grade 9 different from Grade 2 tube?
Grade 9 is a Ti-3Al-2.5V alloy with higher strength than commercially pure Grade 2 titanium, while still offering useful corrosion resistance and formability for tubing applications.
Can Grade 9 tube be supplied for bicycle frames?
Yes. Buyers should provide OD, wall thickness, length, condition, surface finish and any bending or welding requirements.
Which documents should be requested?
Common documents include MTC, heat-number traceability, dimensional inspection and EN 10204 3.1 when required by the purchase specification.
Tube Tolerance and Downstream Processing
Grade 9 tube is often selected for parts that will be bent, welded, swaged or precision-machined after delivery. The RFQ should state the downstream process, because wall-thickness tolerance, straightness, surface condition and material condition can affect forming performance. For bicycle or lightweight frame applications, specify whether the tube needs straight lengths, cut lengths, polished surface, butted sections or special end preparation.
For hydraulic or fluid-line applications, buyers should define the controlling standard, test requirement and cleanliness expectation. If the tube will be assembled with fittings, the drawing should include end detail, bend radius, pressure requirement and inspection method so the quotation can reflect the correct tubing condition and documentation package.
Common applications
Review export and fabrication support22
Ti
Titanium
Lightweight structural tubingConfirm grade, size, tolerance, surface, packing and certificate scope before quotation.Bicycle and sports equipment tubeConfirm grade, size, tolerance, surface, packing and certificate scope before quotation.Hydraulic tube assembliesConfirm grade, size, tolerance, surface, packing and certificate scope before quotation.Aerospace-related tube workConfirm grade, size, tolerance, surface, packing and certificate scope before quotation.
Compare related titanium tube products
Titanium tube and pipe category| Product | Reference | RFQ focus | Link |
|---|---|---|---|
| Grade 2 Seamless Tube | ASTM B338 | Heat exchanger tube | View |
| Grade 7 Pipe | Ti-0.15Pd | Corrosion-service pipe | View |
| Grade 12 Tube | Ti-0.3Mo-0.8Ni | Chemical process tube | View |
| Titanium Welded Pipe | ASTM B862 | Large pipework | View |
| Titanium Coil Tubing | ASTM B338 / B861 | Coiled heat transfer tube | View |
| Titanium Capillary Tube | Small diameter | Instrument tube | View |
| Titanium Bicycle Tubing | Grade 9 | Frame tube sets | View |
| 3Al-2.5V Tubing | Grade 9 | Structural tube | Current page |
For a view of who else publishes this material and what each one states, see Grade 9 Titanium Tube Suppliers: Five Company Pages Compared.
Request a quote for Grade 9 Titanium Tube | Ti-3Al-2.5V ASTM B338 / B861
Send grade, standard, size, condition, quantity and certificate requirements. Beiyu replies with quotation, lead time and documentation scope.
Specification detail with sources
ASTM B861 Grade 9 (UNS R56320) is Ti-3Al-2.5V with 2.5 to 3.5 percent aluminium and 2.0 to 3.0 percent vanadium, and it carries two different acceptance levels: annealed material is judged against a 620 MPa minimum tensile strength, while cold worked stress relieved tube must reach 860 MPa. The condition line on the purchase order therefore changes the numbers the mill test certificate is measured against, which is unusual among the common titanium tube grades and a frequent source of rejected paperwork.
Beiyu Titanium produces Grade 9 tube by extrusion followed by cold rolling and supplies it in the M annealed or Y cold worked conditions, using the condition codes defined in GB/T 2965, where M marks annealed and Y marks cold worked material. An enquiry should pair the condition with OD, wall and the downstream operation, bending, swaging or machining, because tube ordered at the 860 MPa level forms very differently from annealed stock, and Beiyu confirms the workable combination at quotation rather than after the mill run.
Specification for Grade 9 Ti-3Al-2.5V tube
These are the fields an order line needs. The mechanical requirement that applies is the one in ASTM B338 for the ordered form, size range and condition, so it is confirmed against the ordered standard at quotation rather than carried across from another product standard.
| Field | Value |
|---|---|
| Grade | Grade 9 Ti-3Al-2.5V |
| UNS designation | R56320 under ASTM B338 |
| Werkstoff number | 3.7195 |
| Controlling standard | ASTM B338 |
| Selected composition limits, mass percent | Ti-3Al-2.5V (Al 2.5 to 3.5, V 2.0 to 3.0). Full chemistry is per the governing specification. |
| Supply condition | R / M / Y, stated on the order |
Dimensions
State outside diameter, wall thickness and length, and say whether the item is ordered as tube or as pipe, because that is what fixes the governing standard and with it the acceptance requirements.
Inspection and documentation
The inspection scope is set by the order rather than assumed. State which examinations are required, to which acceptance standard and class, and at which stage they are performed, because those four fields are what make an inspection line objectively verifiable during receiving inspection.
Acceptance criteria you can paste into your purchase order
Grade and standard: Grade 9 Ti-3Al-2.5V, ASTM B338, UNS R56320 Form and dimensions: ______ Tolerance: ______ Condition: ______ (R / M / Y, stated on the order) Surface: ______ (state a roughness value where it is an acceptance criterion) Straightness and ovality: ______ Inspection scope: ______ (examination, acceptance standard, class and stage) Certificate: EN 10204 3.1 inspection certificate, chemistry traceable to heat number, mechanical results and inspection lot identification per the governing specification
Send the drawing or purchase specification with those fields filled in and the enquiry is reviewed against the applicable standard before pricing.