
Titanium Square Tube
Titanium Square Tube supplied to drawing by titanium grade, outside dimensions, wall, corner radii, length, straightness, twist, surface and inspection requirements.
- Grades
- Grade 2, Grade 5 or specified grade
- Specification
- Customer drawing / agreed manufacturing specification
- Form
- Square hollow section
- Documents
- MTC and dimensional inspection report
Product Detail
Product Introduction
Titanium Square Tube is a non-round hollow section ordered for fabricated frames, equipment and custom assemblies. Availability depends on grade, size, wall, corner radii, length and manufacturing route; ASTM B338 should not be assumed to cover non-round structural profiles unless the purchase specification expressly establishes it.
Product Specifications
| Product | Titanium Square Tube | Grade | Titanium Grade 2, Grade 5 or specified alloy |
|---|---|---|---|
| Standard | Titanium square tubing is commonly supplied to a customer drawing and agreed manufacturing/inspection specification. The order should not cite a round heat-exchanger-tube standard as a substitute for the required non-round geometry and acceptance criteria. | Size & Form | Square hollow section by outside dimensions, wall thickness, corner radii and length |
| Tolerance | Customer-drawing dimensions, wall, radii, straightness, twist, squareness and cut-end requirements | Supply Condition | Straight cut lengths in agreed formed or welded condition with protected ends and bundle or case packing |
| Inspection | MTC review, outside dimensions and wall, corner radii, straightness, twist, squareness, length and cut ends, surface and weld-seam inspection where applicable, and heat/lot traceability. | Documents | MTC, heat/lot traceability and agreed inspection reports |
Send the complete material RFQ
Include grade, specification revision, dimensions, tolerance, quantity, condition, tests and destination.
Chemical Composition
Weight percent; maximum unless a range is shown. Titanium is the balance. The ordered specification and grade control.
| Grade / UNS | Principal Alloying Elements | Fe max | O max | C max | N max | H max | Ti |
|---|---|---|---|---|---|---|---|
| Grade 2 / R50400 | — | 0.30 | 0.25 | 0.08 | 0.03 | 0.015 | Balance |
| Grade 5 / R56400 | Al 5.50–6.75; V 3.50–4.50 | 0.40 | 0.20 | 0.08 | 0.05 | 0.015 | Balance |
Mechanical Properties – Annealed Material Reference
| Grade | Ultimate Tensile Strength min | 0.2% Yield Strength min | Elongation min |
|---|---|---|---|
| Grade 2 | 345 MPa | 275 MPa | 20% |
| Grade 5 | 895 MPa | 828 MPa | 10% |
Representative minima only. Product form, section size, heat treatment and the invoked specification determine the certified acceptance values.
Typical Physical Properties
| Grade | Density | Elastic Modulus | Thermal Expansion |
|---|---|---|---|
| Grade 2 | 4.51 g/cm³ | Approx. 105 GPa | Approx. 8.6 µm/m·K |
| Grade 5 | 4.43 g/cm³ | Approx. 114 GPa | Approx. 8.6 µm/m·K |
Typical engineering references, not inspection acceptance limits.
Certificates & Inspection Records

Services We Can Provide
Product Packaging
Pipe and tube ends are capped, surfaces are wrapped where required, and bundles or export cases are identified by grade, size, heat and quantity.
Application Scenarios

Lightweight equipment frames
Material grade, dimensions, condition and inspection must be matched to the application requirements.

Chemical and marine fabricated assemblies
Material grade, dimensions, condition and inspection must be matched to the application requirements.

Custom supports, enclosures and architectural components
Material grade, dimensions, condition and inspection must be matched to the application requirements.
FAQ
Is titanium square tube covered by ASTM B338?
ASTM B338 primarily addresses seamless and welded tubes for condensers and heat exchangers. Non-round hollow sections should be ordered to an explicit drawing and agreed specification unless the contract states otherwise.
Which dimensions are essential for quotation?
Provide outside width and height, wall, corner radii, length, straightness, twist, cut ends and tolerances.
Can Grade 5 be formed like Grade 2?
Not automatically. Grade 5 has higher strength and different forming behavior, so section size, radii, route and heat-treatment requirements require manufacturing review.
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