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Savoy Piping Inc. supplies SMO 254 / UNS S31254 flanges — 6Mo superaustenitic stainless for seawater and high-chloride process lines (often forged as A182 F44).
Related: SMO 254 hub · A182 F44 · WNRF · Flanges hub.
SMO 254 is a high-Mo austenitic stainless with high PREN for pitting resistance. Twin hub: SMO 254 flanges; forging twin: A182 F44.
Related high-alloy options: 904L · Super Duplex S32750. Choose per PREN / corrosion design.
Include SMO 254 / UNS S31254 / A182 F44, flange type and facing, size and pressure class (or PN), bore/schedule where applicable, quantity, destination, and documentation (EN 10204 3.1 / 3.2, PMI, NACE, TPI). Email sales@savoypipinginc.com.
| SMO 254 Flange Specification | ASTM A182 / ASME SA182 |
| SMO 254 Flange Manufacturing Process | Hot Forging / Rolling / Machining |
| SMO 254 Flange Other Grades | 202 / 304 / 304L / 304H / 309S / 310S / 316 / 316L / 316Ti / 317L / 321 / 321H / 347 / 347H / 904L etc. UNS No. - UNS S30400, UNS S30403, UNS S31008, UNS S31620, UNS S31603, UNS S31603, UNS S31635, UNS S31703, UNS S32100, UNS S34700, UNS S34709, UNS N08904 EN No. - 1.4301, 1.4307, 1.484, 1.4401, 1.4404, 1.471, 1.4438, 1.441, 1.450, 1.451, 1.4539 |
| SMO 254 Flange Outer Diameter | 1/2" NB TO 64" NB |
| SMO 254 Flange Pressure Class | Class 150#, Class 300#, Class 400#, Class 600#, Class 900#, Class 1500#, Class 2500# or As Per Custom Requirement PN 6, PN 10, PN 16, PN 25 and PN 40 etc |
| SMO 254 Flange Schedule | Sch 10s TO Sch XXS or As Per Custom Requirement |
| SMO 254 Flange Facing | Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| SMO 254 Flange Dimension | ASME B16.5, ASME B16.47 SERIES A, ASME B16.47 SERIES B, ASME B16.36, BS10, EN1092-1:2013, MSS SP44, ASA, API-605, ISO 7005, ISO 15590-3, DIN 2631--2638, DIN 2573-2576, DIN 2527, DIn 2641-2642, DIN 2565-2566, DIN2502, AWWA, AS2129 TABLE C, D, E, F, J etc.. |
| SMO 254 Flange Types | Welding Neck Flange, Slip On Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange, Blind Flange, Orifice Flanges, Plate Flange, Long Welding Neck Flanges, Weldoflange, Nipoflange, Expander Flange, Reducing Flange, WNRF Flange, SORF Flange, SWRF Flange, Custom Flange as per Drawing etc. |
| SMO 254 Flange Other Testing | NACE MR0175, Ultrasoung TEST, IGC TEST, Intergranular Corrrosion Test as per ASTM A262 Practice E, Charpy Impact Test, Macro, Grain Size, Hardness, HIC, SSC, Sour Service etc. |
| SMO 254 Flange Value Added Services | Rolling, Drill, Punch, CNC Machining, Sand Blasting, Shot Blasting, Heat Treatment, Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized |
| SMO 254 Flange Packaging | Loose / Crate / Wooden Pallet / Wooden Box / Plastic Cloth Wraps |
| SMO 254 Flange Shipment & Transportation | By Road - Truck / Train Partial Load, Full Load, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 4 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| Sorf Flange Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS, Bureau of Indian Standards BIS Approved ETC |
The chemical composition of grade SMO 254 Flange is outlined in the following table
| Steel Grade | C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N |
| F44 | 0.02 max | 0.8 max | 1.0 max | 0.030 max | 0.010 max | 19.5-20.5 | 17.5-18.5 | 6.0-6.5 | 0.50-1.00 | 0.18-0.22 |
| 1.447 | 0.02 max | 0.7 max | 1.0 max | 0.030 max | 0.010 max | 19.5-20.5 | 17.50-18.50 | 6.0-7.0 | 0.50-1.00 | 0.18-0.25 |
Physical properties of SMO 254 grade Stainless Steel in the annealed condition
| Hardness (HB) | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) (Long.) | Impact Value (J) (Long.) |
| 260 max | 650-850 | 300-340 | 35 min | 100 min |
SMO 254 (UNS S31254) is a 6Mo superaustenitic stainless used for flanges in seawater and high-chloride service; forged class is often A182 F44.
Both target high PREN service. See also super duplex. Do not substitute without approval.
Forgings: ASTM A182 F44 / ASME SA182. Dimensions: ASME B16.5 / B16.47 (or EN 1092-1).
Grade / UNS / ASTM (or EN) designation, type and facing, size and class/PN, bore/schedule, quantity, destination, and MTC (EN 10204 3.1 / 3.2). Email sales@savoypipinginc.com.
Socket Weld Flange is Covered with Plastic Cloth and Packed in Wooden Box, Wooden Pallet and Wooden Fumigated Crate. Our Packaging is Fully Waterproof and Safe for Transport with Proper Strips on Wooden Box, having Lifting Point.
We Export SMO 254 Flanges to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen , Syria, Israel, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Costa Rica, Puerto Rico, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, Europe, Africa, Asia, North America, South America, Middle East, Far East.etc
We Supply SMO 254 Flanges Andhra Pradesh, Arunachal Pradesh, Assam, Bihar, Chhattisgarh, Goa, Gujarat, Haryana, Himachal Pradesh, Jammu and Kashmir, Jharkhand, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Odisha, Punjab, Rajasthan, Sikkim, Tamil Nadu, Telangana, Tripura, Uttar Pradesh, Uttarakhand, West Bengal, Mumbai, Navi Mumbai, Pune, Nashik, Nagpur, Solapur, Kolhapur, Ambernath, Ahmednagar, Latur, Ahmadabad, Surat, Rajkot, Vadodara, Panaji, Madgaon, Chennai, Kolkata, Hyderabad, Bengaluru, Delhi, New Delhi, Ludhiana, Chandigarh, Raipur, Bhopal, Jamshedpur, Vishakhapatnam, Cochin, Ghaziabad, Noida, Gurugram, Bhillai, Durgapur, Vijaywada, Kanpur etc.
Savoy Piping Inc. is a well known worldwide Exporter of SMO 254 Flanges, Savoy Piping Inc., is committed to provide each and every customer with the highest standard of customer service. We deal in SMO 254 Flanges in India and Overseas, offering a wide range of SMO 254 Flanges