ASTM A403 WPS31254 Buttweld Fittings are high alloy stainless steel pipe fittings which are created from 254 SMO / UNS S31254 stainless steel which is highly resistant to pitting, crevice corrosion, chloride stress corrosion cracking as well as seawater corrosion. These fittings are commonly employed in offshore, marine, chemical processing, desalination, pulp & paper and petrochemical industries where ordinary stainless steel grades are insufficient in hostile situations.
We produce and sell a comprehensive range of ASTM A403 WPS31254 Buttweld Fittings such as elbows, tees, reducers, stub ends and caps in seamless and welded construction as per international standards like as ASTM, ASME and EN requirements.
ASTM A403 WPS31254 Buttweld Fittings Manufacturer in India
We are one of the trusted manufacturers & exporters of Stainless Steel ASTM A403 WPS31254 Buttweld Fittings for high pressure and highly corrosive applications. These fittings are constructed of high quality 6 Moly stainless steel and offer superior mechanical strength and endurance.
Our range includes:
- ASTM A403 WPS 31254 90 Degree Elbow
- ASTM A403 WPS 31254 Buttweld Pipe Cap
- Long Radius Elbows
- Short Radius Elbows
- Equal & Unequal Tees
- Concentric Reducers
- Eccentric Reducers
- Stub Ends
- Pipe Bends
- Crosses
These SMO 254 Buttweld Fittings are available in both seamless and welded forms with customized wall thicknesses, schedules, and dimensions according to client requirements.
Table of Contents
- ➤ What is ASTM A403 WPS31254 Stainless Steel?
- ➤ Advantages of 254 SMO Buttweld Fittings
- ➤ Types of SS 304L Buttweld Fittings We Offer
- ➤ ASTM A403 WPS31254 Buttweld Fittings Specifications
- ➤ Chemical Composition of UNS S31254 Buttweld Fittings
- ➤ Mechanical Properties of ASTM A403 UNS S31254 Fittings
- ➤ Dimensions of ASTM A403 WPS31254 90 Degree Elbow
- ➤ Weight Chart of ASTM A403 WPS31254 Buttweld Fittings
- ➤ Applications of ASTM A403 WPS31254 Buttweld Fittings
- ➤ Manufacturing & Quality Testing
- ➤ Why Choose Us for ASTM A403 WPS31254 Buttweld Fittings?
What is ASTM A403 WPS31254 Stainless Steel?
ASTM A403 WPS31254 are wrought austenitic stainless steel buttweld fittings made of UNS S31254 / 254 SMO stainless steel, a high-performance alloy with large quantities of molybdenum, nickel, chromium and nitrogen.
This material is also identified as:
- ASTM A403 UNS S31254 Fittings
- UNS S31254 Buttweld Fittings
- EN 10088-3 1.4547 Fittings
- X1CrNiMoCuN20-18-7 Welded Fittings
- ASTM A403 S31254 (254SMO) Stainless Steel Buttweld Fittings
The alloy offers superior resistance against:
- Chloride-induced pitting
- Seawater corrosion
- Sulfuric acid environments
- Crevice corrosion
- Stress corrosion cracking
These qualities make 6 Moly Buttweld Fittings a preferred choice in severe industrial environments where normal 304 or 316 stainless steel grades are not suitable.
Advantages of 254 SMO Buttweld Fittings
- Exceptional Corrosion Resistance – The high molybdenum content provides superior resistance against chlorides and seawater environments.
- High Mechanical Strength – These fittings maintain excellent strength even under elevated temperatures and high-pressure systems.
- Long Service Life – Reduced maintenance requirements and longer operational life make them cost-effective for critical applications.
- Excellent Weldability – UNS S31254 Buttweld Fittings can be welded easily using standard fabrication techniques.
- Resistance to Pitting & Crevice Corrosion – Ideal for marine, offshore, and desalination systems exposed to aggressive chloride conditions.
Types of ASTM A403 WPS31254 Buttweld Pipe Fittings
➤ ASTM A403 WPS31254 90 Degree Elbow
Used to change the direction of flow in piping systems, these elbows are designed for high-pressure and corrosive applications. Available in long radius and short radius designs.
➤ ASTM A403 WPS31254 Buttweld Pipe Cap
Pipe caps are used to close the end of pipelines securely. These fittings ensure leak-proof sealing in process industries and offshore applications.
➤ UNS S31254 Reducers
Reducers help connect pipes of different diameters while maintaining smooth fluid flow with minimum pressure loss.
➤ SMO 254 Equal & Unequal Tees
Tees are used to divide or combine fluid flow in piping systems. Available in customized configurations.
➤ 254 SMO Stub Ends
Stub ends are commonly used with lap joint flanges for systems requiring frequent dismantling and maintenance.
ASTM A403 WPS31254 Buttweld Fittings Specifications
| Specification | Details |
|---|---|
| Product Name | ASTM A403 WPS31254 Buttweld Fittings |
| Material Grade | UNS S31254 / 254 SMO |
| Standard | ASTM A403 / ASME SA403 |
| EN Grade | 1.4547 |
| DIN Name | X1CrNiMoCuN20-18-7 |
| Type | Seamless / Welded / Fabricated |
| Size Range | 1/2” NB to 48” NB |
| Wall Thickness | SCH 5S to SCH XXS |
| Pressure Rating | High Pressure |
| Form | Elbow, Tee, Reducer, Cap, Stub End |
| Surface Finish | Pickled, Polished, Sand Blasted |
| Manufacturing Process | Hot Formed / Cold Formed |
| Testing | PMI, Hydro, Radiography, IGC, UT |
| Standards Followed | ASME B16.9, B16.28, MSS SP-43 |
Mechanical Properties of ASTM A403 UNS S31254 Fittings
| Property | Value |
|---|---|
| Tensile Strength | 680 MPa min |
| Yield Strength | 300 MPa min |
| Elongation | 35% min |
| Hardness | 210 HB max |
| Density | 8.0 g/cm³ |
| Melting Point | 1320 – 1390°C |
Chemical Composition of UNS S31254 Buttweld Fittings
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.020 max |
| Chromium | 19.5 – 20.5 |
| Nickel | 17.5 – 18.5 |
| Molybdenum | 6.0 – 6.5 |
| Nitrogen | 0.18 – 0.22 |
| Copper | 0.5 – 1.0 |
| Manganese | 1.0 max |
| Silicon | 0.80 max |
| Phosphorus | 0.030 max |
| Sulfur | 0.010 max |
Dimensions of ASTM A403 WPS31254 90 Degree Elbow
| NPS | Outside Diameter (mm) | Center to End (mm) |
|---|---|---|
| 1/2” | 21.3 | 38 |
| 3/4” | 26.7 | 38 |
| 1” | 33.4 | 38 |
| 2” | 60.3 | 76 |
| 4” | 114.3 | 152 |
| 6” | 168.3 | 229 |
| 8” | 219.1 | 305 |
Weight Chart of ASTM A403 WPS31254 Buttweld Fittings
| Size | SCH 10S Weight (kg) | SCH 40S Weight (kg) |
|---|---|---|
| 1/2” Elbow | 0.08 | 0.11 |
| 1” Elbow | 0.18 | 0.26 |
| 2” Elbow | 0.65 | 0.95 |
| 4” Elbow | 2.60 | 3.80 |
| 6” Elbow | 5.50 | 7.90 |
Manufacturing & Quality Testing
All ASTM A403 UNS S31254 Fittings undergo strict quality inspections to ensure compliance with international standards. Our quality assurance procedures include:
- Positive Material Identification (PMI)
- Hydrostatic Testing
- Ultrasonic Testing
- Intergranular Corrosion Test
- Radiographic Examination
- Dimensional Inspection
- Visual Testing
- Third-Party Inspection
We provide EN 10204 3.1 certification, mill test certificates, and complete traceability documentation with every shipment.
Applications of ASTM A403 WPS31254 Buttweld Fittings
These fittings are widely used in industries such as:
- Offshore Oil & Gas
- Petrochemical Plants
- Heat Exchangers
- Desalination Plants
- Marine Engineering
- Chemical Processing
- Pulp & Paper Industries
- Fertilizer Plants
- Pharmaceutical Industries
- Power Generation
Why Choose Us for ASTM A403 WPS31254 Buttweld Fittings?
- Large Ready Stock Available
- Competitive Pricing
- International Quality Standards
- Fast Delivery
- Custom Sizes & Dimensions
- Third Party Inspection Support
- Experienced Technical Team
- Export Packaging Standards
We focus on supplying reliable corrosion-resistant piping solutions suitable for critical industrial environments.
Related Stainless Steel Fittings
- Stainless Steel 304L Buttweld Fittings
- Stainless Steel 304H Pipe Fittings
- Stainless Steel 310S Pipe Fittings
- Stainless Steel 316TI Pipe Fittings
- Stainless Steel 317L Buttweld Fittings
- Stainless Steel 6MO Buttweld Fittings
- Stainless Steel SMO 254 Buttweld Fittings
Frequently Asked Questions
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