Titanium Long Weld Neck Flange
Titanium Long Weld Neck Flange supplied by titanium grade, material and dimensional standards, nominal sizes, class, facing, bore or tapping geometry, inspection and documentation.
- Grades
- Grade 2, Grade 5, Grade 7, Grade 12 or specified grade
- Configuration
- Extended tapered neck with an order-defined overall length and weld end
- Standards
- ASME B16.5 drilling/facing where applicable plus approved long-neck drawing; ASTM B381 / ASME SB381 material
- Documents
- MTC, heat traceability and agreed dimensional/NDE records
Product Detail
Product Introduction
Titanium Long Weld Neck Flange is a drawing- and standard-controlled titanium piping component. A complete order identifies titanium grade and source-material specification separately from flange dimensions, pressure class, facing, mating components, overall length, neck and hub profile, bore, pipe schedule, weld end and transition radii, service conditions and inspection.
Product Specifications
| Product | Titanium Long Weld Neck Flange | Grade | Titanium Grade 2, Grade 5, Grade 7, Grade 12 or specified alloy |
|---|---|---|---|
| Standard | ASME B16.5 drilling/facing where applicable plus approved long-neck drawing; ASTM B381 / ASME SB381 material. The applicable piping code, project specification and approved drawing control design, rating and acceptance. | Size & Form | NPS/DN and Class/PN with configuration-specific dimensions according to the invoked standard or approved drawing |
| Tolerance | Order-defined bore, hub, facing, bolt circle, holes, taps, length and transition tolerances | Supply Condition | Forged and machined with protected sealing faces, permanent identification and reinforced export-case packing |
| Inspection | MTC and heat traceability, PMI when specified, nominal sizes and class, OD and thickness, bore and hub, bolt circle and holes, facing and finish, special tapping or transition geometry, visual examination and supplementary NDE. | 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 |
| Grade 7 / R52400 | Pd 0.12–0.25 | 0.30 | 0.25 | 0.08 | 0.03 | 0.015 | Balance |
| Grade 12 / R53400 | Mo 0.20–0.40; Ni 0.60–0.90 | 0.30 | 0.25 | 0.08 | 0.03 | 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% |
| Grade 7 | 345 MPa | 275 MPa | 20% |
| Grade 12 | 483 MPa | 345 MPa | 18% |
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 |
| Grade 7 | Approx. 4.51 g/cm³ | Approx. 105 GPa | Approx. 8.6 µm/m·K |
| Grade 12 | Approx. 4.54 g/cm³ | Approx. 103 GPa | Approx. 8.6 µm/m·K |
Typical engineering references, not inspection acceptance limits.
Certificates & Inspection Records
Services We Can Provide
Product Packaging
Machined faces, bores and bevels are protected with covers or wrapping. Flanges are separated by grade, size and heat, then secured in reinforced export cases with traceability labels. Typical export packaging for the same physical product form is shown below; final packing is confirmed for each order.
Application Scenarios
Chemical-process and instrumentation piping
Material grade, dimensions, condition and inspection must be matched to the application requirements.
Energy and pressure-equipment connections
Material grade, dimensions, condition and inspection must be matched to the application requirements.
Marine, desalination and industrial systems
Material grade, dimensions, condition and inspection must be matched to the application requirements.
FAQ
Does ASTM B381 define the flange dimensions?
No. ASTM B381 primarily covers titanium forgings. The order must separately identify the dimensional standard, class, facing and special geometry.
Can the flange be ordered from a generic sketch?
Critical pressure-boundary and connection geometry requires a controlled standard or approved drawing with revision and inspection requirements.
What should be included in the RFQ?
Provide grade, material and dimensional standards, sizes, class/PN, facing, bore, special geometry, quantity, service, NDE and certificates.
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