ASTM A403 WPS 31254 ASME B16.9 Pipe Fittings Manufacturer
We are a professional manufacturer of ASTM A403 WPS31254 Elbow Tee Reducer ASME B16.9 Pipe Fittings
ASTM A403 WP S31254 Pipe Fittings (commonly known as 254 SMO fittings) are engineered for extreme corrosion resistance in chloride-rich and marine environments. These wrought austenitic stainless steel fittings are ideal for industries such as offshore oil & gas, desalination, chemical processing, and pulp & paper.
ASTM A403 Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings (Download ASTM A403 Standard PDF)
WPS31254 ,WP refers to Wrought Pipe,grade UNS S31254 ,WP31254 Pipe fitting is made of ASTM A312 UNS S31254 Seamless Pipes
And it is installed with ASTM A182 F44 Flanges,
SMO 254 is super-austenitic stainless steel that offers good corrosion resistance, particularly in chloride-containing environments
A403 UNS S31254 Product Specifications
- Material: ASTM A403 WP/ UNS S31254 / 254 SMO
- Sizes: ½” to 48” (DN15 – DN1200)
- Standards: ASME B16.9, MSS SP-43
- Pressure Classes: SCH 10S to SCH 160 / XXS
- Type: Seamless, Welded, Buttweld
- Available in elbows, tees, reducers, caps, stub ends, and crosses
ASTM A403 UNS S31254 Elbow,A403 UNS S31254 Tee,A403 UNS S31254 Reducer
A403 UNS S31254 Chemical Composition (weight %)
| Element | Min % | Max % |
|---|---|---|
| Carbon (C) | – | 0.020 |
| Chromium (Cr) | 19.50 | 20.50 |
| Nickel (Ni) | 17.50 | 18.50 |
| Molybdenum (Mo) | 6.00 | 7.00 |
| Nitrogen (N) | 0.18 | 0.25 |
| Copper (Cu) | 0.50 | 1.00 |
| Manganese (Mn) | – | 1.00 |
| Silicon (Si) | – | 0.70 |
A403 UNS S31254 Pipe fittinge heat treatment requirement
| Grade WPⁿ | Grade CRⁿ | UNS Designation | Solution Anneal Temperature, min °F [°C]ⁿ | Quench Media |
|---|---|---|---|---|
| WPS31254 | CR31254 | S31254 | 2100 [1150] | water or other rapid cool |
Mechanical Property of A403 UNS S31254
| All WP and CR Grades | Yield Strength, min, ksi [MPa] | Tensile Strength, min, ksi [MPa] |
|---|---|---|
| S31254 | 44 [300] | 94 [650] to 119 [820] |
ASTM A403 S31254 Pipe fittings Dimension according to ASME B16.9
For fittings covered by ASME B16.9
Fittings of size or shape differing from these standards, but meeting all other requirements of this specification, may be furnished in accordance with Supplementary Requirement S58 Specification A960/A960M.
ASTM A403 S31254 Elbow 90deg Dimension
See full ASME B16.9 Elbows dimension here
ASTM A403 S31254 Pipe fittings Testing & Certification
- 100% PMI (Positive Material Identification)
- Hydrostatic and Pneumatic Pressure Testing
- Intergranular Corrosion Test (ASTM A262)
- Pitting Resistance Test (ASTM G48) – on request
- EN 10204 3.1 / 3.2 Mill Test Certificates provided
We are a trusted manufacturer and supplier of ASTM A403 WP S31254 Elbows, offering 254 SMO butt-weld fittings in accordance with international standards and customer-specific requirements. All elbows are supplied with EN 10204 3.1/3.2 certificates, NACE MR0175 compliance, and Mill Test Certificates (MTC).
