254 SMO Pipes.
Seamless and welded pipe for process lines, pressure piping, utilities and structural use. Supplied to ASTM A312 / ASME SA312 UNS S31254.
Quick details
| Material grade | 254 SMO (UNS S31254) |
|---|---|
| Standard | ASTM A312 / ASME SA312 UNS S31254 |
| Type | Seamless, Welded (ERW / EFW), Electropolished on request, Cut lengths |
| Size range | 1/8" to 24" NB (6 to 600 DN); larger sizes on enquiry |
| Usage / application | Seawater cooling systems, Desalination plants, Offshore firewater lines |
| Test certificate | EN 10204 3.1 mill test certificate; 3.2 on request |
| Business type | Stockist and supplier |
| Location | Kumbharwada, Mumbai 400004, Maharashtra |
Also searched as: 254 SMO pipe, 254 SMO stainless steel pipe, stainless steel 254 SMO pipe, 254 SMO seamless pipe, 254 SMO welded pipe, ASTM A312 UNS S31254 pipe, UNS S31254 pipe, 1.4547 pipe
Product information for purchasing teams
254 SMO is a 6% molybdenum super-austenitic stainless with added nitrogen and copper. Its pitting resistance is high enough for seawater service, so it is used for seawater cooling, desalination, bleach plants and offshore firewater systems.
Exact specification, availability and commercial details are confirmed against your enquiry.
254 SMO Pipes specifications
| Material standard | ASTM A312 / ASME SA312 UNS S31254 |
|---|---|
| Grade | 254 SMO, UNS S31254, W.Nr 1.4547 |
| Size range | 1/8" to 24" NB (6 to 600 DN); larger sizes on enquiry |
| Schedules | Sch 5S, 10S, 40S, 80S, 160 and XXS, or specified wall thickness |
| Dimensional standards | ASME B36.19M (stainless), ASME B36.10M (carbon and alloy) |
| Lengths | Single random, double random and cut-to-length |
| Ends | Plain, bevelled or threaded |
| Testing | Hydrostatic, eddy current, PMI and third-party inspection on request |
| Documents | Mill test certificate to EN 10204 3.1; 3.2 on request |
Equivalent grades
| Grade | UNS | Werkstoff Nr. | EN / BS | JIS |
|---|---|---|---|---|
| 254 SMO | S31254 | 1.4547 | X1CrNiMoCuN20-18-7 | – |
Chemical composition, %
| Grade | C | Mn | Si | P | S | Cr | Ni | Mo | Cu | N |
|---|---|---|---|---|---|---|---|---|---|---|
| 254 SMO | ≤ 0.020 | ≤ 1.00 | ≤ 0.80 | ≤ 0.030 | ≤ 0.010 | 19.5 – 20.5 | 17.5 – 18.5 | 6.0 – 6.5 | 0.50 – 1.00 | 0.18 – 0.25 |
Mechanical properties
| Property | Value |
|---|---|
| Tensile strength | ≥ 650 MPa |
| Yield strength (0.2%) | ≥ 300 MPa |
| Elongation | ≥ 35% |
| Hardness | ≤ 223 HB |
Values per ASTM A240 UNS S31254, annealed. Confirm against the current edition of the standard and your purchase specification.
Density: 8.00 g/cm³
Types we supply
- Seamless
- Welded (ERW / EFW)
- Electropolished on request
- Cut lengths
Applications
- Seawater cooling systems
- Desalination plants
- Offshore firewater lines
- Pulp bleach plants
Questions buyers ask
Which standard covers 254 SMO Pipes?
254 SMO Pipes are supplied to ASTM A312 / ASME SA312 UNS S31254.
What sizes of 254 SMO Pipes does Steel Impex India supply?
Size range: 1/8" to 24" NB (6 to 600 DN); larger sizes on enquiry. Schedules: Sch 5S, 10S, 40S, 80S, 160 and XXS, or specified wall thickness. Exact availability is confirmed for each enquiry.
Do 254 SMO Pipes come with a mill test certificate?
Yes. Material is supplied with a mill test certificate to EN 10204 3.1, traceable to the heat number. Third-party inspection to 3.2 can be arranged on request.
What should I send for a 254 SMO Pipes quotation?
Send nominal size, schedule or wall thickness, seamless or welded, length, quantity and certificate type.
Where is Steel Impex India located?
Steel Impex India is at 231/235, Sant Sena Maharaja Marg, 2nd Kumbharwada, Mumbai 400004, and supplies across India.