ASTM A182 F5 Forged Fittings are made to ASTM A182 / ASME SA182 F5 for refinery sulphidation service. Socket weld and threaded fittings are dimensioned to ASME B16.11 for small-bore ASTM A182 F5 piping.
Raaj Fittings manufactures ASTM A182 F5 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 A182 / ASME SA182 F5 |
|---|---|
| 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 |
ASTM A182 F5 is a 5% chromium, ½% molybdenum alloy steel for high-temperature service. The chromium gives resistance to high-temperature sulphidation and hydrogen attack that plain carbon steel lacks, which is why 5Cr is common in refinery crude and vacuum units.
| Element, % | ASTM A182 F5 |
|---|---|
| Carbon (C) | 0.15 max |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | 0.030 max |
| Sulphur (S) | 0.030 max |
| Silicon (Si) | 0.50 max |
| Chromium (Cr) | 4.0 – 6.0 |
| Nickel (Ni) | 0.50 max |
| Molybdenum (Mo) | 0.44 – 0.65 |
| Property | ASTM A182 F5 |
|---|---|
| Tensile strength, min. | 485 MPa (70 ksi) |
| Yield strength, min. | 275 MPa (40 ksi) |
| UNS | Werkstoff Nr. | EN / DIN | Other |
|---|---|---|---|
| K41545 | 1.7362 | X12CrMo5 (comparable) | — |
ASTM A182 F5 socket weld and threaded fittings are forged and heat treated, then machined. Socket welds in chrome-moly need preheat and post-weld heat treatment like any other weld in the system.
| 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.
Heat treatment records and hardness results are reported for each heat.
The 5% chromium resists high-temperature sulphidation from sulphur compounds in crude oil, which attacks carbon steel above about 260 °C, so F5 / WP5 is widely used in crude and vacuum units.
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 A182 F5. EN 10204 3.2 certification and inspection by your nominated third-party agency are available on request.