SMO 254 Flanges Manufacturer
Midland Alloys Inc. is a trusted Indian manufacturer and global supplier of stainless steel flanges, offering premium-grade SMO 254 Flanges for critical applications. High-alloy austenitic stainless steel SMO 254 (UNS S31254 / 6Mo), which is renowned for its remarkable mechanical strength and resistance to corrosion, is used to make these flanges. Being a top manufacturer of ASTM A812 SMO 254 Flanges we create flanges that satisfy ANSI B16.5, B16.47 and B16.48 as well as other national and international quality standards. These flanges’ high levels of chromium, molybdenum and nitrogen improve their resistance to pitting and crevice corrosion. Our Long Weld Neck Flanges, Slip on Flanges and SMO 254 Threaded Flange all function dependably in environments with high temperatures and a lot of chloride.
Benefits of Using 254 SMO Flange
SMO 254 Flanges deliver high performance and long service life in aggressive service conditions. In industries requiring exceptional resistance and strength their alloy composition and metallurgical structure make them extremely reliable.
- Outstanding resistance to pitting and crevice corrosion in chloride environments
- Structural durability is improved by high tensile and yield strength.
- Better thermal stability at higher temperatures
- Various joining technique is supported by excellent weldability.
- dependable in chemical, flue gas and seawater systems available in a variety of types to meet a range of piping needs
- able to withstand mechanical stress without corroding or cracking
- Durable performance lowers maintenance expenses and downtime.
254 SMO Flange Specification
1/2" (15 NB) to 48" (1200NB)
ASTM A182 / A240 & ASME SA182 / SA240
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Threaded / Screwed / Forged / Plate
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Forging, Rolling, Casting
FNPT, NPT, BSPT, MNPT, BSPP
Technical Details & Delivery Condition
| STandARD | WERKSTOFF NR. | UNS | AFNOR | EN |
| SMO 254 | 1.4547 | S31254 | Z1 CNDU 20.18.06Az | X1CrNiMoCuN20-18-7 |
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | N | Cu |
| SMO 254 | ≤0.020 | ≤0.80 | ≤1.00 | ≤0.030 | ≤0.010 | 20 | 18 | 6.1 | 0.20 | 0.7 |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| SMO 254 | 8.0 g/cm3 | 1320-1390 ℃ | 650 | 300 | 35 % |
Stainless Steel Flanges Grades We Offer
Difference Between Stainless Steel SMO 254 Flanges and Stainless Steel 253MA Flanges
SMO 254 Flanges (UNS S31254) and Stainless Steel 253MA Flanges differ primarily in chemical composition and corrosion resistance. Higher molybdenum, nitrogen, and chromium concentrations in SMO 254 provide better resistance to pitting and crevice corrosion. In contrast to 253MA which is intended for high-temperature oxidation resistance but has a limited tolerance for chloride corrosion it performs remarkably well in saltwater and chemical environments. While 253MA is preferred for heat treatment equipment and furnace components, SMO 254 has a higher tensile strength and is better suited for critical offshore, desalination and petrochemical application.
Plate
Shear
Press
Inspection
Lathe
Drilling
Cleaning
Flange
Inspection
Analytic
Marking
Packing & Shipping
Applications of ASTM A182 SMO 254 Flanges
ASTM A182 SMO 254 Flanges are widely applied in aggressive environments where high resistance to corrosion and strength is required. They are widely employed in chemical processing, particularly in systems that work with saline or acidic solutions. These flanges are essential for piping systems exposed to seawater and sour gas in the oil and gas industry. Because of their durability they can be used in desalination plants, offshore platforms and marine engineering. Because of its exceptional resistance to corrosion and cracking from chloride stress and its high durability, SMO 254 is also the preferred material for heat exchangers, pressure vessels and flue gas desulfurization units.
Why Choose Midland Alloys Inc. for UNS S31254 Flanges
We are a leading Indian manufacturer and exporter of high-quality SMO 254 Flanges that comply with ASTM A182 / ASME SA182M specifications. We guarantee complete adherence to ASTM, EN, and ANSI B16.5/B16.47 standards while concentrating on exact manufacturing procedures utilizing ISO certified procedures. Options for customization such as size range, pressure class, end finish and cut to length service for specialised installation requirement is advantageous to our clients. Serving clients in India, the Gulf countries, Europe, Africa, and Southeast Asia, we offer prompt dispatch and project-specific support for small and large-volume orders. Our products are subjected to stringent in-house testing, including hydrostatic, PMI, and ultrasonic inspections, and we have full mill test certification (MTC). Third-party inspections are also welcome upon request. Every flange has its chemical composition, mechanical characteristics, and dimensional accuracy confirmed by certified MTCs and stamped in accordance with ASTM/ASME standards.
Frequently Asked Questions – SMO 254 Flanges
SMO 254 Flanges come in threaded, lap joint, blind, slip-on, socket weld, weld neck, and long weld neck varieties.
SMO 254 flange price per kg may vary based on type, dimension, and finish. Contact us for the best price SMO 254 flanges in India.
These include ASTM A182 / ASME SA182, ANSI B16.5, B16.47, and EN 1092-1, with pressure ratings ranging from 150# to 2500#.
Yes, for smooth integration we manufacture using client-specific OD, ID, thickness and drilling templates.
In accordance with project specifications, we offer SMO 254 flange weight and dimension charts. Usually, sizes fall between ½” and 48″ NB.
Yes, our flanges meet both ANSI B16.5 / B16.47 and EN dimensional standards, ensuring versatile system compatibility.
Yes, we are a reliable SMO 254 flanges supplier in India with a robust export network across the Gulf, Africa, and Europe.
