254 SMO Stainless Steel Tube – Manufacturer
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Midland Alloys is a trusted alloy 254 SMO tube manufacturer in India, providing premium quality tubes to industries worldwide. SMO 254 Tube is a high-alloy austenitic stainless steel tube designed for excellent resistance against pitting, crevice corrosion, and stress cracking in harsh environments. These tubes are made up of carbon, chromium, manganese, molybdenum, nickel, nitrogen, phosphorus, silicon, and sulphur, SMO 254 UNS S31254 stands out for its reliability in critical applications. Our tubes meet ASTM & ASME A213, A269, A249, A511, A554 standards. We manufacture in sizes ranging from 1/8” to 48”, with seamless pipes up to 24”. The tubes are available in outer diameter of 0.3mm – 10mm and thicknesses from 0.4mm up to 30mm across schedules 5 to XXH. Available in multiple hardness grades like soft, hard, half hard, quarter hard, and spring hard with surface finishes such as bright, polish, and black these tubes can be customized in size, dimension, and form. We follow a precise manufacturing process which include melting, hot forming, cold drawing, annealing, pickling, and final inspection. This ensure every tube deliver strength, precision, and durability. We commit to provide reliable stainless steel SMO 254 tubes that meet client expectations.
Benefits of 254 SMO Stainless Steel Tube
254 SMO Stainless Steel tube is known for its resistance and durability in challenging environments. These tubes are used for their performance in industries where strength, toughness, and corrosion resistance are vital.
- Excellent resistance to pitting and crevice corrosion in chloride-rich conditions.
- High strength and toughness ensure long-term performance under harsh condition.
- 6 Mo tubing has excellent weldability and ease of manufacture.
- When compared to typical stainless steels this material has superior stress corrosion cracking resistance.
- Sandvik 254 SMO Tubing provide exceptional reliability in the marine and chemical sectors.
- Low carbon content minimize risk of intergranular corrosion after welding.
- Exceptional versatility make it ideal for a wide range of industrial applications.
254 SMO Stainless Steel Tube Specifications

Seamless Tube OD : 1/8 -12" NPS
Welded Tube OD : 6.00 mm OD up to 914.4 mm OD
EFW Tube Size : 3.35 mm OD To 101.6 mm OD

ASTM B729 / ASTM B464, ASME SB 729 / ASME SB 464

Seamless / Welded / ERW / Fabricated / CDW / 100% X Ray Welded

Round, Square, Rectangular, Hydraulic Etc

Single Random, Double Random, Standard & Cut length Tube

Plain End, Beveled End, Treaded Tube

SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS

2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Tubes, Finish as per customer Requirements
Contact us today to discuss how 254 SMO Stainless Steel Tube can benefit your application. Whether you need guidance in selecting the right Tubes or have specific requirements, our team of experts is here to help you find the optimal solution.
Technical Details & Delivery Condition
| Element | Min % | Max % |
|---|---|---|
| Carbon (C) | 0.02 | 0.03 |
| Manganese (Mn) | 0 | 1.0 |
| Phosphorus (P) | – | 0.03 |
| Sulfur (S) | – | 0.01 |
| Silicon (Si) | – | 0.8 |
| Chromium (Cr) | 19 | 20.5 |
| Molybdenum (Mo) | 6.0 | 6.5 |
| Nickel (Ni) | 17 | 18.5 |
| Nitrogen (N) | 0.18 | 0.25 |
| Copper (Cu) | 1.5 | 2.0 |
| Iron (Fe) | Balance | – |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
|---|---|---|---|---|
| 8.0 g/cm3 | 1320-1390 ℃ | 300 | 650 | 35 % |
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | SIS | GOST |
|---|---|---|---|---|---|---|---|
| SMO 254 | S31254 | 1.4547 | Z1 CNDU 20.18.06Az | X1CrNiMoCuN20-18-7 | – | 2378 | – |
Stainless Steel Tube Grades We Offer
Difference Between 254 SMO vs Super Duplex Tube
When comparing Alloy 254 SMO Tube to Super Duplex steel tube, the key differences lie in composition and performance. 254 SMO offer higher resistance to pitting and crevice corrosion due to its balanced mix of nickel, molybdenum, and nitrogen. This makes tube more reliable in seawater and acidic environments. Super Duplex steel, while offering higher strength and good resistance, may not match the same corrosion resistance of SMO 254 in chloride-rich conditions. For projects where superior corrosion protection is more critical than tensile strength, 254 SMO tubes remain the better choice.
Round Bar

Analytic

Cut to Length

Centering

Heating

Perforation

Inspection of Size

Pickling

Inspection of Surface

Lubricating

Cold Drawing (Cold Rolling)

Degreasing

Annealing

Straightening

Cut

Pickling / Passivating

Inspection

Analytic

Marking

Packing & Shipping
Alloy 254 SMO Tube Uses
Alloy 254 SMO Tubes are utilized in sector that require high strength and resilience in harsh environments. In power generation, SMO 254 boiler tube ensure efficiency in high-pressure systems. In chemical plants, 254 SMO seamless tube support the safe transport of corrosive fluids. Desalination plants prefer SMO 254 rectangular tubing for its resistance to seawater and brine. In instrumentation and medical fields, 254 SMO Stainless Steel capillary tube provide precision flow and durability in sensitive systems. These versatile tubes are utilized in oil and gas refineries, heat exchangers, marine structures, and food processing industries.
Why Choose Midland Alloys Inc. for 254 SMO Seamless Tube
Midland Alloys Inc. is a trusted SMO 254 tube supplier in India known for delivering reliable products with precision. Our tubes are manufactured and delivered with globally recognized certifications, including ISO 9001:2015, PED 2014/68/EU, and EN 10204 3.1/3.2 Mill Test Certificates. We also encourage third-party inspections (TPI) by reputable agencies like as TÜV, BV, SGS and DNV, which ensure transparency and quality. We’ve worked directly with engineering firms, EPC contractors, marine operators, and chemical facilities to understand their needs and provide tailored solutions. Clients rely on our proven track record of prompt delivery, stringent export compliance, and excellent documentation assistance. Every tube undergoes in-house and third-party testing, which includes hydrostatic, ultrasonic, radiographic and PMI inspections, as well as mechanical tests such as tensile, hardness, flattening, and bend tests as required. We receive repeat business from clients in the Middle East, Europe, and Southeast Asia. 254 SMO Tube Price in India depends on factors like size, thickness, and finishing type. We provide fair pricing with global delivery support.
FAQs
Yes. They are available in a wide range of sizes, thicknesses, and finishes for custom needs.
Yes, welding is possible. Use proper filler metals and maintain controlled heat input.
Yes. It performs well at moderately high temperatures with strong oxidation resistance.
They perform best in chloride-rich, seawater, and acidic environments due to high corrosion resistance.



