254 SMO Round Bar
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| Specification 254 SMO Round Bar Details | |
|---|---|
| Product Name | 254 SMO Round Bar |
| Material Grade | 254 SMO / 6Mo Stainless Steel |
| UNS Designation | UNS S31254 |
| Werkstoff Number | W.Nr. 1.4547 |
| EN Designation | X1CrNiMoCuN20-18-7 |
| Material Type | Super-Austenitic Stainless Steel |
| Chemical Composition | Chromium 19.5–20.5%, Nickel 17.5–18.5%, Molybdenum 6.0–6.5%, Nitrogen 0.18–0.22%, Copper 0.5–1.0%, Carbon 0.02% max, Manganese 1.0% max, Silicon 0.08% max, Phosphorus 0.03% max, Sulfur 0.01% max |
| Manufacturing Type | Hot Rolled / Cold Drawn / Forged / Ground |
| Round Bar Standard | ASTM A276 / ASME SA276 |
| Bar Standard | ASTM A479 / ASME SA479 |
| Forging Standard | ASTM A473 / applicable forging specification |
| European Standard | EN 10088-3 |
| Diameter | As per Standard / Customer Requirement |
| Diameter Range | Approximately 3 mm to 500 mm, depending on manufacturing capability |
| Length | Standard 1–6 m / Fixed or Customized Length |
| Tolerance | h8, h9, h10, h11, h12 or as required |
| Surface Finish | Black / Bright / Peeled / Ground / Polished / Machined |
| Heat Treatment | Solution Annealed |
| Condition | Annealed / Cold Drawn / Hot Rolled / Forged / Ground |
| MTC | EN 10204 3.1 / 3.2 |
| Testing | Chemical, Mechanical, Dimensional, Visual, Hardness, Intergranular Corrosion and NDT as specified |
| Tensile Strength | Minimum approximately 650 MPa |
| Yield Strength | Minimum approximately 300 MPa |
| Elongation | Minimum approximately 35% |
| Density | Approximately 8.0 g/cm³ |
| Melting Range | Approximately 1320–1390°C |
| Corrosion Resistance | Excellent resistance to pitting, crevice corrosion, general corrosion and stress-corrosion cracking |
| Chloride Resistance | Exceptional resistance to chloride-bearing seawater and aggressive marine environments |
| PRE Value | PREN ≥ 42.5, depending on specified chemistry |
| Welding | Good weldability with suitable 254 SMO-compatible filler metals |
| Filler Metal | ERNiCrMo-10 / suitable 6Mo-compatible filler, as specified |
| Available Form | Round Bar / Rod / Precision Ground Bar |
| Customization | Diameter, Length, Tolerance, Finish, Heat Treatment, Testing and Documentation |
| Origin | European / American / Japanese / Korean and other approved origins |
| Export Supply | Worldwide Export Supply |
| Exporter Support | Technical specification, inspection, certification, export packing and international shipment coordination |
| Applications | Marine, Seawater Handling, Chemical Processing, Petrochemical, Oil & Gas, Desalination, Flue Gas Desulfurization, Pulp & Paper, Pharmaceutical and Process Industries |
254 SMO Round Bar – Standard Dimensions
| Diameter (mm) | Diameter (in.) | Weight (kg/m) | Weight (lb/ft) |
|---|---|---|---|
| 5 | 0.197 | 0.157 | 0.105 |
| 6 | 0.236 | 0.236 | 0.159 |
| 8 | 0.315 | 0.402 | 0.270 |
| 10 | 0.394 | 0.628 | 0.422 |
| 12 | 0.472 | 0.905 | 0.608 |
| 14 | 0.551 | 1.232 | 0.828 |
| 16 | 0.630 | 1.608 | 1.081 |
| 18 | 0.709 | 2.036 | 1.368 |
| 20 | 0.787 | 2.513 | 1.689 |
| 22 | 0.866 | 3.038 | 2.042 |
| 25 | 0.984 | 3.927 | 2.638 |
| 28 | 1.102 | 4.925 | 3.310 |
| 30 | 1.181 | 5.655 | 3.800 |
| 32 | 1.260 | 6.434 | 4.323 |
| 36 | 1.417 | 8.142 | 5.471 |
| 40 | 1.575 | 10.053 | 6.758 |
| 45 | 1.772 | 12.723 | 8.553 |
| 50 | 1.969 | 15.708 | 10.557 |
| 56 | 2.205 | 19.715 | 13.249 |
| 63 | 2.480 | 24.957 | 16.767 |
| 71 | 2.795 | 31.700 | 21.303 |
| 80 | 3.150 | 40.212 | 27.018 |
| 90 | 3.543 | 50.893 | 34.200 |
| 100 | 3.937 | 62.832 | 42.208 |
| 110 | 4.331 | 76.026 | 51.075 |
| 125 | 4.921 | 98.175 | 65.963 |
| 150 | 5.906 | 141.372 | 94.969 |
| 175 | 6.890 | 192.423 | 129.306 |
| 200 | 7.874 | 251.327 | 168.864 |
254 SMO Round Bar – Inch / US Bar Sizes
| US Bar Size | Diameter (in.) | Diameter (mm) | Approx. Weight (kg/m) |
|---|---|---|---|
| #2 | 0.250 | 6.35 | 0.253 |
| #3 | 0.375 | 9.53 | 0.570 |
| #4 | 0.500 | 12.70 | 1.013 |
| #5 | 0.625 | 15.88 | 1.582 |
| #6 | 0.750 | 19.05 | 2.278 |
| #7 | 0.875 | 22.23 | 3.099 |
| #8 | 1.000 | 25.40 | 4.053 |
| #9 | 1.125 | 28.58 | 5.132 |
| #10 | 1.250 | 31.75 | 6.329 |
| #11 | 1.375 | 34.93 | 7.659 |
| #12 | 1.500 | 38.10 | 9.115 |
| #13 | 1.625 | 41.28 | 10.691 |
| #14 | 1.750 | 44.45 | 12.665 |
| #15 | 1.875 | 47.63 | 14.250 |
| #16 | 2.000 | 50.80 | 16.212 |
| #18 | 2.250 | 57.15 | 20.515 |
| #20 | 2.500 | 63.50 | 25.330 |
254 SMO Round Bar – Size & Tolerance Chart
| Diameter Range | Available Finish | Typical Tolerance | Supply Condition |
|---|---|---|---|
| 3–10 mm | Bright / Cold Drawn / Ground | h8 / h9 / h10 / h11 | Solution Annealed |
| 10–25 mm | Bright / Cold Drawn / Polished | h8 / h9 / h10 / h11 | Solution Annealed |
| 25–50 mm | Cold Drawn / Peeled / Ground | h9 / h10 / h11 | Solution Annealed |
| 50–75 mm | Peeled / Ground / Polished | h10 / h11 | Solution Annealed |
| 75–100 mm | Peeled / Machined / Ground | h11 | Solution Annealed |
| 100–150 mm | Hot Rolled / Peeled / Machined | h11 / Customer Requirement | Solution Annealed |
| 150–250 mm | Hot Rolled / Forged / Machined | Customer Requirement | Solution Annealed |
| 250–350 mm | Forged / Rough Machined | Customer Requirement | Solution Annealed |
| 350–500 mm | Forged / Custom Machined | Customer Requirement | Solution Annealed |
Why Should You Buy From MetalX Nickel & Alloys
- Distributor of Renowned Mills of Nickel Alloys in Europe and USA
- Experience of 2 Decades as a Supplier of High Temperature Alloys in Dubai ( UAE), Saudi Arabia and Africa.
- Largest Stockist of Nickel Alloy Flat Products in Mumbai
- Ready Stock of Sheets, Coils, Strips and Bars in Over 50 Sizes at Al Jubail, Abu Dhabi, Muscat and South Africa
- Facility of Cut to Size at No Extra Cost.
- Weekly Delivery to Nigeria, Qatar, Dammam, Sharjah and Singapore
- NACE Certified Material at Dealer Price.
- Resale Price for Traders, Wholesalers, Importers and Stockholders in Mena Countries
- Data Sheets and MTC Along With Quote.
- Free Sample, Latest Price List on Request
- Renowned Supplier in Heat Exchangers, Instrumentation, and Oil and Gas Industry
- Compare Weight Chart and Price Per Kg in China and India.
Key Features of 254 SMO Sheets & Plates
- Excellent Pitting Corrosion Resistance – 254 SMO provides exceptional resistance to localized pitting corrosion.
- Excellent Crevice Corrosion Resistance – High molybdenum and nitrogen content contribute to strong resistance to crevice corrosion.
- High Chloride Resistance – Particularly suitable for chloride-rich environments and seawater applications.
- Excellent Resistance to Chloride Stress Corrosion Cracking – Provides strong resistance to chloride-induced stress corrosion cracking.
- Superior Seawater Performance – Suitable for demanding seawater and marine environments.
- High Molybdenum Content – Approximately 6.0–6.5% molybdenum supports enhanced localized corrosion resistance.
- High Chromium Content – Approximately 19.5–20.5% chromium contributes to corrosion and oxidation resistance.
- Low Carbon Content – Maximum carbon content of approximately 0.02% supports good resistance to sensitization.
- Nitrogen Alloyed – Nitrogen contributes to strength and resistance to localized corrosion.
- Excellent Acid Resistance – Suitable for selected acidic and aggressive chemical environments.
- High Strength – Provides strong mechanical performance compared with conventional austenitic stainless steels.
- Good Weldability – Can be welded using suitable procedures and qualified fabrication practices.
- Good Fabrication Properties – Suitable for fabrication into industrial components and equipment.
- Excellent Durability – Designed for demanding service environments with long operational life.
- Wide Thickness Availability – Available from approximately 0.3 mm to 100 mm according to product requirements.
- Large Width Availability – Widths can be supplied up to approximately 2500 mm where applicable.
- Long Length Availability – Lengths can be supplied up to approximately 12000 mm according to requirements.
- Multiple Surface Finishes – 2B, BA, hot rolled, cold rolled, polished and pickled finishes can be supplied.
- Sheets, Plates & Coils – Available in multiple product forms and cut-to-size configurations.
- Marine Applications – Suitable for seawater-handling equipment and marine systems.
- Chemical Processing Applications – Used in selected aggressive chemical processing equipment.
- Heat Exchanger Applications – Suitable for heat exchangers exposed to corrosive process fluids.
- Pollution-Control Applications – Can be considered for selected environmental and pollution-control systems.
- Offshore Applications – Useful for selected offshore equipment exposed to chloride-rich environments.
- High-Pressure Applications – Suitable for selected high-pressure industrial equipment when the applicable design requirements are met.
- Reliable Material Traceability – Material certificates and inspection documentation can be supplied according to order requirements.
- Quality Testing Available – Chemical, mechanical, dimensional, hardness, visual and other specified inspections can be arranged.
- Export-Ready Material – Sheets and plates can be suitably packed for handling, storage and international transportation.
- Global 254 SMO Exporter – METALX NICKEL ALLOYS supplies 254 SMO Sheets & Plates to international buyers, distributors, traders, stockholders and industrial end users.
| Specification | 254 SMO Sheets & Plates Details |
|---|---|
| Product Name | 254 SMO Sheets & Plates |
| Material Grade | 254 SMO |
| UNS Designation | S31254 |
| EN Material Number | 1.4547 |
| Material Type | High-Alloy Austenitic Stainless Steel |
| Applicable Standard | ASTM A240 / ASME SA240 |
| Thickness Range | 0.3 mm to 100 mm |
| Width | Up to 2500 mm |
| Length | Up to 12000 mm |
| Product Forms | Sheets, Plates, Coils and Cut Sizes |
| Surface Finish | 2B, BA, Hot Rolled, Cold Rolled, Polished, Pickled |
| Chromium (Cr) | 19.5 – 20.5% |
| Nickel (Ni) | 17.5 – 18.5% |
| Molybdenum (Mo) | 6.0 – 6.5% |
| Nitrogen (N) | 0.18 – 0.22% |
| Carbon (C) | Maximum 0.02% |
| Corrosion Resistance | Excellent resistance to pitting and crevice corrosion |
| Chloride Resistance | High resistance to chloride stress corrosion cracking |
| Seawater Performance | Excellent resistance in seawater and chloride-rich environments |
| Weldability | Good weldability and fabrication properties with suitable procedures |
| Testing | Chemical, mechanical, dimensional, hardness, visual and other specified tests |
| Customization | Thickness, width, length, finish, cut size, testing and documentation as required |
| Packing | Export-worthy packing suitable for safe international transportation |
| Applications | Marine, seawater systems, chemical processing, pollution control, heat exchangers, offshore and industrial equipment |
| Export Supply | Available for international buyers, distributors, EPC contractors and industrial end users |
1. What are 254 SMO Sheets & Plates?
254 SMO Sheets & Plates are manufactured from a highly alloyed austenitic stainless steel designed for excellent resistance to pitting, crevice corrosion and chloride-containing environments.
2. What is the UNS designation of 254 SMO?
The UNS designation is S31254.
3. What is the EN material number of 254 SMO?
The EN material number is 1.4547.
4. What is the common standard for 254 SMO Sheets & Plates?
A commonly applicable specification is ASTM A240 / ASME SA240.
5. Is 254 SMO suitable for seawater applications?
Yes. 254 SMO is particularly valued for its excellent resistance to seawater, chlorides, pitting and crevice corrosion.
6. Is 254 SMO resistant to chloride stress corrosion cracking?
Yes. It provides high resistance to chloride stress corrosion cracking compared with many conventional stainless steel grades.