UNS S31254 (254 SMO) Super Austenitic Stainless Steel – Manufacturer, Supplier, Stockist, Dealer, Wholesaler & Exporter in India

Dipti Metal Industries, founded in 2009 by Mr. Kumpsingh Rajput, is a globally trusted Manufacturer, Supplier, Stockist, Dealer, Wholesaler & Exporter of UNS S31254 (254 SMO) stainless steel in India.
We provide a full range of UNS S31254 products including pipes, tubes, plates, sheets, bars, rods, forgings, flanges, fittings, fasteners & valves designed for use in extremely corrosive and chloride-rich environments.

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🌐 Worldwide Equivalents of UNS S31254

• 🔹 UNS (USA): S31254 (254 SMO)

• 🔹 ASTM: A240, A312, A479, A182 F44, A403 WPS31254

• 🔹 EN / DIN (Europe): 1.4547 – X1CrNiMoCuN20-18-7

• 🔹 ISO: X1CrNiMoCuN20-18-7

• 🔹 AFNOR (France): Z1 CNDU 20-18-06Az

• 🔹 BS (UK): 254 SMO equivalent grades

• 🔹 Trade Names: Alloy 254, 6 Mo, SMO 254

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🛠️ Product Range – UNS S31254

• ✅ UNS S31254 Pipes & Tubes – Seamless, Welded, ERW, EFW

• ✅ UNS S31254 Sheets & Plates – Hot Rolled, Cold Rolled, Strips, Coils, Shim

• ✅ UNS S31254 Bars & Rods – Round, Hex, Flat, Bright, Forged Bars

• ✅ UNS S31254 Forgings – Shafts, Blocks, Custom Shapes

• ✅ UNS S31254 Flanges – Weld Neck, Slip-On, Blind, Threaded, Socket Weld, Lap Joint

• ✅ UNS S31254 Pipe Fittings – Elbows, Tees, Reducers, Caps, Stub Ends, Crosses

• ✅ UNS S31254 Fasteners – Bolts, Nuts, Studs, Screws, Washers

• ✅ UNS S31254 Valves & Gaskets – Gate, Globe, Ball, Butterfly Valves, Spiral Wound Gaskets

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⚗️ Chemical Composition (% by weight)

• Chromium (Cr): 19.5 – 20.5%

• Nickel (Ni): 17.5 – 18.5%

• Molybdenum (Mo): 6 – 6.5%

• Nitrogen (N): 0.18 – 0.22%

• Copper (Cu): 0.5 – 1.0%

• Carbon (C): ≤ 0.02%

• Silicon (Si): ≤ 0.80%

• Manganese (Mn): ≤ 1.00%

• Phosphorus (P): ≤ 0.03%

• Sulfur (S): ≤ 0.01%

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⚙️ Mechanical Properties

• 🔧 Tensile Strength (Rm): 650 – 850 MPa

• 🔧 Yield Strength (Rp0.2): ≥ 300 MPa

• 🔧 Elongation: ≥ 35%

• 🔧 Hardness: ≤ 210 HB

• 🔧 PREN (Pitting Resistance): ≥ 42.5

• 🔧 Microstructure: Fully Austenitic, Non-Magnetic

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🏭 Applications of UNS S31254

• 🚢 Marine & Desalination: Seawater piping, desalination plants, cooling systems

• 🛢️ Oil & Gas: Heat exchangers, flowlines, refinery piping

• 🏭 Chemical Processing: Acid tanks, scrubbers, tall columns, reactors

• ⚡ Power Generation: Flue gas desulfurization (FGD) systems, chimneys, boilers

• 📄 Pulp & Paper Industry: Bleaching equipment, digesters, washers

• 🧪 Food & Beverage & Pharma: Process piping in acidic and hygienic conditions

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🌍 Worldwide Export Destinations

We proudly export UNS S31254 (254 SMO) to customers in:

Afghanistan • Albania • Algeria • Argentina • Australia • Austria • Bahrain • Bangladesh • Belarus • Belgium • Brazil • Canada • Chile • China • Czech Republic • Denmark • Egypt • France • Germany • Greece • India • Indonesia • Iran • Iraq • Ireland • Israel • Italy • Japan • Kenya • Kuwait • Malaysia • Mexico • Netherlands • New Zealand • Nigeria • Norway • Oman • Philippines • Poland • Portugal • Qatar • Romania • Russia • Saudi Arabia • Singapore • South Africa • South Korea • Spain • Sri Lanka • Sweden • Switzerland • Thailand • Turkey • UAE • UK • USA • Vietnam • Zambia

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❓ Frequently Asked Questions (FAQ)

Q1. What is UNS S31254 (254 SMO)?
A super austenitic stainless steel alloy with high Mo, Cu, and N for exceptional corrosion resistance in seawater, acids, and chloride environments.

Q2. How does it compare with 316L?
UNS S31254 offers far better resistance to pitting, crevice, and stress corrosion cracking, especially in chloride-rich conditions.

Q3. Is UNS S31254 weldable?
Yes ✅ It is weldable using standard techniques with proper filler materials and requires solution annealing for best corrosion resistance.

Q4. Where is UNS S31254 used?
In marine, oil & gas, desalination, pulp & paper, power plants, and chemical processing industries.

Q5. Do you provide certifications?
Yes ✅ All products are supplied with EN 10204 3.1/3.2 MTC, ISO, CE, PED, and TUV approvals.

Q6. Do you export globally?
Yes 🌍 We export UNS S31254 to 60+ countries worldwide.

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📞 Get a Quote

Looking for a reliable UNS S31254 (254 SMO) stainless steel Manufacturer, Supplier, Stockist, Dealer, Wholesaler & Exporter in India?

📧 Email: sales@diptimetal.com
📞 Call / WhatsApp: +91-9975266499

Dipti Metal Industries supplies UNS S31254 pipes, tubes, plates, bars, flanges, fittings, fasteners & valves with global certifications and worldwide delivery.