Titanium Grade 2 Forged Fittings are made to ASTM B381 / ASME SB381 Grade F2 for seawater and chlorine service. Socket weld and threaded fittings are dimensioned to ASME B16.11 for small-bore Titanium Grade 2 piping.
Raaj Fittings manufactures Titanium Grade 2 forged fittings in-house at our two plants in India, from ⅛" to 4" in Class 2000 to 9000, and exports them to EPC contractors, fabricators and stockists across the Middle East, Europe and the Americas, with full traceability and EN 10204 certificates.
| Material specification | ASTM B381 / ASME SB381 Grade F2 |
|---|---|
| Dimensional standard | ASME B16.11; MSS SP-79, SP-83, SP-95 and SP-97 |
| Size range | ⅛" to 4" NPS |
| Pressure class | Socket weld: Class 3000, 6000, 9000. Threaded: Class 2000, 3000, 6000 |
| Threads | NPT to ASME B1.20.1; BSPT / BSPP to BS 21 / ISO 7-1 |
| Certification | EN 10204 3.1 mill test certificate as standard; EN 10204 3.2 on request |
Commercially pure titanium Grade 2 (UNS R50400) combines very low density with essentially complete immunity to seawater corrosion. Its protective oxide film resists chlorides, chlorine dioxide, wet chlorine and many oxidising media; Grade 1 is a softer, more formable version.
| Element, % | R50400 |
|---|---|
| Oxygen (O) | 0.25 max |
| Iron (Fe) | 0.30 max |
| Carbon (C) | 0.08 max |
| Nitrogen (N) | 0.03 max |
| Hydrogen (H) | 0.015 max |
| Titanium (Ti) | Balance |
| Property | Titanium Grade 2 |
|---|---|
| Tensile strength, min. | 345 MPa (50 ksi) |
| Yield strength (0.2%), min. | 275 MPa (40 ksi) |
| Elongation, min. | 20% |
| UNS | Werkstoff Nr. | EN / DIN | Other |
|---|---|---|---|
| R50400 (Gr 2) / R50250 (Gr 1) | 3.7035 (Gr 2) / 3.7025 (Gr 1) | Ti 2 / Ti 1 | JIS Class 2 / Class 1 |
Titanium socket weld and threaded fittings are machined from Grade 2 forgings or bar. Socket welds need full inert-gas shielding, and threaded joints a suitable anti-seize compound.
| Pipe | Socket weld class | Threaded class |
|---|---|---|
| SCH 80 / XS | 3000 | 2000 |
| SCH 160 | 6000 | 3000 |
| XXS | 9000 | 6000 |
Every heat is PMI-verified and its chemistry and mechanical properties are confirmed against the material specification before the forged fittings are released. Each piece is marked with grade, size, rating and heat number for traceability to its EN 10204 3.1 mill test certificate. EN 10204 3.2 certification and inspection by the buyer's nominated third-party agency are available on request, as are PED 2014/68/EU compliance for European projects and IBR certification for Indian boiler applications.
Grade 1 has the lowest oxygen and iron, so it is softer and easiest to form. Grade 2 is slightly stronger and is the most widely used commercially pure titanium for piping.
Not directly by fusion welding. Titanium piping connects to other materials through flanges, often lap joint flanges or insulating kits to prevent galvanic corrosion.
Class 3000 socket weld fittings match SCH 80 pipe, Class 6000 matches SCH 160 and Class 9000 matches XXS. For threaded fittings, the matching classes are 2000, 3000 and 6000.
Every order is supplied with EN 10204 3.1 mill test certificates showing heat chemistry and mechanical properties to ASTM B381 Grade F2. EN 10204 3.2 certification and inspection by your nominated third-party agency are available on request.