254 SMO Sheets & Plates.
Flat product for fabrication, pressure vessels, tanks, cladding and machined parts. Supplied to ASTM A240 / ASME SA240 UNS S31254.
Quick details
| Material grade | 254 SMO (UNS S31254) |
|---|---|
| Standard | ASTM A240 / ASME SA240 UNS S31254 |
| Type | Cold-rolled sheet, Hot-rolled plate, Coil and strip, Cut-to-size blanks |
| Thickness | Sheet 0.4 mm to 6 mm; plate 6 mm to 100 mm; heavier 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 plate, 254 SMO stainless steel plate, stainless steel 254 SMO plate, 254 SMO sheet, ASTM A240 UNS S31254 plate, UNS S31254 plate, 1.4547 plate
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 Sheets & Plates specifications
| Material standard | ASTM A240 / ASME SA240 UNS S31254 |
|---|---|
| Grade | 254 SMO, UNS S31254, W.Nr 1.4547 |
| Thickness | Sheet 0.4 mm to 6 mm; plate 6 mm to 100 mm; heavier on enquiry |
| Sizes | 1250 × 2500 mm, 1500 × 3000 mm, 2000 × 6000 mm, or cut to size |
| Finishes | 2B, BA, No. 1 (HRAP), No. 4 brushed, mirror, chequered |
| Cutting | Shearing, plasma and in-house 3 kW CNC laser cutting |
| Testing | PMI, ultrasonic testing of plate 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
- Cold-rolled sheet
- Hot-rolled plate
- Coil and strip
- Cut-to-size blanks
Applications
- Seawater cooling systems
- Desalination plants
- Offshore firewater lines
- Pulp bleach plants
Questions buyers ask
Which standard covers 254 SMO Plates?
254 SMO Plates are supplied to ASTM A240 / ASME SA240 UNS S31254.
What sizes of 254 SMO Plates does Steel Impex India supply?
Thickness: Sheet 0.4 mm to 6 mm; plate 6 mm to 100 mm; heavier on enquiry. Sizes: 1250 × 2500 mm, 1500 × 3000 mm, 2000 × 6000 mm, or cut to size. Exact availability is confirmed for each enquiry.
Do 254 SMO Plates 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 Plates quotation?
Send thickness, width × length (or cut-size drawing), finish, 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.