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Pathan Durgadevi Udyan, Ground Floor, 25 Plot No 74/80, Patra Chawl, Maruti , Mandir Marg, Second Street, Girgaon, Mumbai, Maharashtra 400004Tubotech Alloys is a leading manufacturer, supplier, and exporter of premium-quality SMO 254 Instrumentation Fittings in the United Kingdom. Manufactured from UNS S31254 super austenitic stainless steel, our fittings offer exceptional resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. SMO 254 is specifically designed for demanding environments involving seawater, brine solutions, offshore processing, and chemical applications. Its high chromium, molybdenum, nickel, and nitrogen content provides outstanding corrosion resistance and superior mechanical strength.
Tubotech Alloys supplies precision-engineered SMO 254 instrumentation fittings that ensure leak-proof performance, dimensional accuracy, and long service life across critical industrial systems throughout the UK.
We manufacture and supply a comprehensive range of SMO 254 instrumentation fittings, including:
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 19.5 – 20.5 |
| Nickel (Ni) | 17.5 – 18.5 |
| Molybdenum (Mo) | 6.0 – 6.5 |
| Nitrogen (N) | 0.18 – 0.22 |
| Copper (Cu) | 0.5 – 1.0 |
| Carbon (C) | ≤ 0.020 |
| Manganese (Mn) | ≤ 1.0 |
| Silicon (Si) | ≤ 0.80 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.010 |
The elevated levels of molybdenum, chromium, nickel, and nitrogen significantly enhance the alloy’s resistance to localized corrosion and chloride-rich environments.
| Property | Value |
|---|---|
| Tensile Strength | 650 – 850 MPa |
| Yield Strength | ≥ 310 MPa |
| Elongation | ≥ 35% |
| Hardness | ≤ 210 HB |
| Density | 8.0 g/cm³ |
These mechanical properties provide excellent strength, toughness, and durability, making SMO 254 instrumentation fittings suitable for high-pressure and corrosive service conditions.
| Specification | Details |
|---|---|
| Material Grade | SMO 254 / UNS S31254 |
| WNR | 1.4547 |
| Material Type | Super Austenitic Stainless Steel |
| Standards | ASTM A182, ASTM A276, ASTM A479, ASME SA182 |
| Fitting Types | Tube Fittings, Double Ferrule Fittings, Single Ferrule Fittings, Male Connectors, Female Connectors, Union Tees, Elbows, Reducers, Bulkhead Unions, Adapters |
| Size Range | 1/8″ to 2″ OD Tubing |
| Metric Sizes | 3 mm to 50 mm |
| Pressure Rating | Up to 10,000 PSI (depending on size and design) |
| Connection Type | Compression, Threaded, Welded |
| Thread Standards | NPT, BSP, BSPT, BSPP, SAE |
| Temperature Range | -425°F to 1000°F (-254°C to 538°C) |
| Surface Finish | Bright Annealed, Pickled, Polished |
| Testing | Hydrostatic Test, Pneumatic Test, PMI Test, Hardness Test, Dimensional Inspection |
| Certification | EN 10204 3.1, MTC, NACE MR0175 / MR0103 (on request) |
SMO 254 instrumentation fittings are extensively used in industries where superior corrosion resistance is essential.
Used in offshore platforms, subsea pipelines, and seawater injection systems due to exceptional chloride resistance.
Suitable for handling aggressive chemicals, acids, and chlorinated process streams.
Widely used in seawater desalination systems and brine handling equipment.
Provides outstanding performance in seawater and marine atmospheric environments.
Ideal for bleach plants and corrosive pulp processing systems.
Used in flue gas desulfurization systems and cooling water applications.
These fittings are crucial in ensuring smooth, dependable, and ordinary fluid and gas waft at some stage in various high-stakes programs.
We source premium-grade UNS S31254 material that complies with international standards.
Advanced production technology ensures dimensional accuracy and leak-free performance.
Every fitting undergoes rigorous inspection and testing before dispatch.
Reliable supply network serving industries across the United Kingdom with prompt delivery.
Available in various sizes, configurations, and specifications according to project requirements.
Years of experience in supplying high-performance instrumentation fittings to critical industries worldwide.
SMO 254 Instrumentation Fittings are high-performance tube fittings manufactured from UNS S31254 super austenitic stainless steel, designed for highly corrosive and chloride-rich environments.
SMO 254 contains higher levels of chromium, molybdenum, nickel, and nitrogen, providing superior resistance to pitting, crevice corrosion, and stress corrosion cracking.
They are widely used in offshore oil & gas, marine, desalination, chemical processing, power generation, and pulp & paper industries.
SMO 254 fittings are typically manufactured according to ASTM, ASME, and international instrumentation fitting standards while meeting UNS S31254 and EN 1.4547 specifications.
Tubotech Alloys offers premium quality, competitive pricing, strict quality control, fast delivery, and customized instrumentation fitting solutions for demanding industrial applications.
Upgrade your assembly with Tubotech for excellence and built to closing. Contact us nowadays to get a quote or examine more about our product range.
Tubotech delivers precision-engineered tubing, fittings, and fasteners with innovative solutions and customizable options. Trusted for quality and durability, we serve industries requiring reliable, high-performance piping and instrumentation products.
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