Titanium Grade 2 / 5 / 7 Pipe Fittings
Teshi Group manufactures Titanium Grade 2 / 5 / 7 pipe fittings (ASTM B363 WPT2 / WPT7, B381 F-2 / F-5 / F-7) as an OEM in India — butt weld fittings to ASME B16.9 and forged socket weld and threaded fittings to ASME B16.11, with heat-number traceability on every piece.
Titanium is around 45 % lighter than steel and is practically immune to seawater, wet chlorine and hypochlorite thanks to a stable, self-healing oxide film.
Titanium Grade 2 / 5 / 7 pipe fittings at a glance
| Material | Titanium Grade 2 / 5 / 7 |
|---|---|
| Specification | Butt weld: ASTM B363 WPT2 / Machined from B381 / B348 / ASTM B363 WPT7 · Forged: ASTM B381 F-2 / ASTM B381 F-5 / ASTM B381 F-7 |
| UNS / W.Nr. | R50400 / 3.7035 · R56400 / 3.7165 · R52400 / 3.7235 |
| Sizes | Butt weld NPS ½"–48", Sch 5S–XXS · Forged NPS ⅛"–4" |
| Pressure class | Wall to pipe schedule (B16.9) · Class 2000, 3000, 6000, 9000 (B16.11) |
| Facing / ends | Bevelled ends to ASME B16.25; socket weld and NPT threaded ends |
| Certification | EN 10204 3.1 standard · 3.2 with third-party inspection · IBR on request |
| Testing | PMI, hardness, dimensional; UT, IGC, impact and ferrite as specified |
Titanium Grade 2 / 5 / 7 chemistry and mechanical properties
Chemical composition of Titanium Grade 2 / 5 / 7 (weight %, maximum unless a range)
| Grade | C | N | V | Al | Pd | Fe | O | H |
|---|---|---|---|---|---|---|---|---|
| Grade 2 | 0.08 | 0.03 | — | — | — | 0.30 | 0.25 | 0.015 |
| Grade 5 (Ti-6Al-4V) | 0.08 | 0.05 | 3.5–4.5 | 5.5–6.75 | — | 0.40 | 0.20 | — |
| Grade 7 (Ti-Pd) | 0.08 | 0.03 | — | — | 0.12–0.25 | 0.30 | 0.25 | — |
Mechanical properties of Titanium Grade 2 / 5 / 7 (minimum, room temperature)
| Grade | Tensile strength | Yield strength (0.2 %) | Elongation | Note |
|---|---|---|---|---|
| Grade 2 | 345 MPa (50 ksi) | 275 MPa (40 ksi) | 20 % | Industrial workhorse |
| Grade 5 (Ti-6Al-4V) | 895 MPa (130 ksi) | 828 MPa (120 ksi) | 10 % | High strength |
| Grade 7 (Ti-Pd) | 345 MPa (50 ksi) | 275 MPa (40 ksi) | 20 % | Reducing acids |
Matching specifications by product form
| Grade | Forged flanges & fittings | Butt weld fittings | Plate | Pipe |
|---|---|---|---|---|
| Grade 2UNS R50400 · W.Nr. 3.7035 | ASTM B381 F-2 | ASTM B363 WPT2 | ASTM B265 Gr 2 | ASTM B861 / B862 Gr 2 |
| Grade 5 (Ti-6Al-4V)UNS R56400 · W.Nr. 3.7165 | ASTM B381 F-5 | Machined from B381 / B348 | ASTM B265 Gr 5 | On request |
| Grade 7 (Ti-Pd)UNS R52400 · W.Nr. 3.7235 | ASTM B381 F-7 | ASTM B363 WPT7 | ASTM B265 Gr 7 | ASTM B861 / B862 Gr 7 |
Limits and minimums from the governing ASTM / ASME specifications, summarised for convenience; the current edition takes precedence.
Pressure rating
Butt weld fittings carry the same pressure rating as straight seamless pipe of the same material and wall thickness, so the fitting schedule is matched to the line pipe (ASME B16.9). Forged socket weld and threaded fittings are rated by class — 3000 and 6000 for socket weld, 2000, 3000 and 6000 for threaded — per ASME B16.11.
Types we manufacture
Dimension charts
Where Titanium Grade 2 / 5 / 7 is used
- Chlor-alkali brine and wet chlorine lines
- Seawater cooling and desalination
- Naval and marine cooling and ballast systems
- Copper, nickel and cobalt autoclave leaching
- Offshore and subsea piping
Testing & certification
- Chemistry including interstitials (O, N, H) reported on the certificate
- Ultrasonic testing of forgings when specified
- Dimensional inspection to ASME B16.5 / B16.9
- Clean-room handling to avoid iron contamination
FAQ
Titanium Grade 2 / 5 / 7 pipe fittings: common questions
What specification covers Titanium Grade 2 / 5 / 7 pipe fittings?
Titanium Grade 2 / 5 / 7 butt weld fittings are made to ASTM B363 WPT2 / Machined from B381 / B348 / ASTM B363 WPT7 with dimensions to ASME B16.9; forged socket weld and threaded fittings are made to ASTM B381 F-2 / ASTM B381 F-5 / ASTM B381 F-7 with dimensions to ASME B16.11.
What is the chemical composition of Grade 2?
Grade 2 (UNS R50400): C 0.08, N 0.03, Fe 0.30, O 0.25, H 0.015 (weight %; single values are maximums).
What are the minimum mechanical properties of Grade 2?
Tensile strength 345 MPa (50 ksi), yield strength 275 MPa (40 ksi), elongation 20 %.
Is Teshi Group a manufacturer of Titanium Grade 2 / 5 / 7 pipe fittings in India?
Yes. Teshi Group has manufactured flanges and fittings in India since 1971 and is ISO 9001:2015 certified and IBR approved. Every Titanium Grade 2 / 5 / 7 piece is hard-stamped with its heat number and supplied with an EN 10204 3.1 certificate; 3.2 with third-party inspection on request.
Which ASTM specification covers titanium flanges?
Titanium flanges are forged to ASTM B381 (grades F-1 to F-12 and others), with dimensions to ASME B16.5 or B16.47. Butt weld fittings are made to ASTM B363 (WPT grades).
What is the difference between titanium Grade 2 and Grade 5?
Grade 2 (UNS R50400) is commercially pure titanium with 345 MPa minimum tensile strength and excellent corrosion resistance. Grade 5 (Ti-6Al-4V, UNS R56400) is an alloy with 895 MPa minimum tensile strength for high-stress parts.
Titanium grade data sheets
Titanium overview →Chemical composition, mechanical properties and PDF data sheet for each grade.
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