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ASTM A403 WPS31254 Duplex Stainless Steel 254SMO Fittings 90 Degree LR Elbow

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ASTM A403 WPS31254 Duplex Stainless Steel 254SMO Fittings 90 Degree LR Elbow

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Brand Name : YUHONG

Model Number : ASTM A403 WPS31254 Stainless Steel 90Deg LR Elbow

Certification : ABS, BV, LR, DNV-GL, KR, CCS , TS, GOST, CCS, TUV, PED

Place of Origin : CHINA

MOQ : 1PC

Payment Terms : L/C,T/T

Delivery Time : 7 DAYS

Packaging Details : PLY-WOODEN CASE OR PALLET

Product Name : Butt Weld Fittings

Standard : ASME SA403 , ASTM A403

Material Grade : S31254, 254 SMO, 1.4547

Size : 1/8"NB TO 48"NB IN

Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS

Type : Seamless / Welded

Form : 45Degree LR, 90Degree SR/LR

High Light : ASTM A403 WPS31254 Stainless Steel Elbow, B16.9 Buttweld 45 Degree LR Elbow

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ASTM A403 WPS31254 / 254SMO Duplex Stainless Steel Elbow 90 Degree LR Elbow

S31254 (UNS S31254), commonly known as 254 SMO (a trademark of Outokumpu), is a super austenitic stainless steel designed for extreme environments. Even though S31254 is more expensive than standard stainless steels, it's cheaper than nickel alloys. So in applications where nickel alloys might be considered, 254 SMO could be a cost-saving alternative without compromising performance. That’s a significant advantage.

Equivalent Grades of ASTM A403 WPS31254 Duplex Stainless Steel Pipe Fittings

STANDARD UNS WERKSTOFF NR. EN
254 SMO® S31254 1.4547 X1CrNiMoCuN20-18-7

Chemical Composition of ASTM A403 WPS31254 Duplex Stainless Steel Pipe Fittings

Grade C Ni Si N S Mn P Cr Ce Fe
SS 254 SMO min. - 17.5 - 0.18 - - - 19.5 0.03 Balance
max. 0.02 18.5 0.08 0.22 0.01 1.00 0.03 20.5 0.08

Mechanical Properties of ASTM A403 WPS31254 Duplex Stainless Steel Pipe Fittings

Grade Tensile Strength (MPa) min Elongation (% in 50mm) min Yield Strength 0.2% Proof (MPa) min Hardness
Rockwell B (HR B) max Brinell (HB) max
254 SMO 650 35 300 50 70

ASTM A403 WPS31254 Duplex Stainless Steel 254SMO Fittings 90 Degree LR Elbow

ASTM A403 WPS31254 Duplex Stainless Steel Pipe Fittings

Specification ASTM A403, ASTM SB 366, ASTM B564, ASME SB564, En 2.4816 UNS S31254
Dimensions Standards

ASME B16.9, ANSI B16.9, ASME B16.28, ANSI B16.28, ANSI B16.25, MSS-SP-43,

MSS-SP-75
Size Range S31254 / 254 SMO Seamless Butt Weld Fittings: 1/2″ – 10″
S31254 / 254 SMO Welded Butt Weld Fittings: 1/2″ – 48″
Wall Thickness 20 Swg., 18 Swg., 16 Swg., 14 Swg., 12 Swg., 10 Swg., & Sch. 10, Sch. 40, Sch. 80, STD, 60, 80, XS, 100, 120, 140, 160 Sch XXS
Type Seamless / Welded / ERW/ Fabricated / Forged
Bending Radius R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Applicable Standards 1-ASME B 16.9 for large Bore
2-ASME B 16.11 for small Bore (socket welded)
3-ASME B 16.25 for butt weld ends
4-ASME B 16.28 for small radius elbow
Surface treatment Sand Rolling, Sand Blasting, Acid Cleaning

Why Choose S31254 Over Alternatives?

  • Lifecycle Cost Savings: Longer service life in aggressive environments offsets higher upfront costs.

  • Weight Savings: Higher strength allows thinner sections vs. 316L, reducing material usage.

  • Sustainability: Resists degradation, reducing waste and replacement frequency.

Limitations to Consider

  • Oxidizing Acids: Avoid nitric acid or strongly oxidizing conditions (risk of accelerated corrosion).

  • Thermal Expansion: Higher than carbon steels (requires design accommodation).

  • Initial Cost: More expensive than 316L/304 but cheaper than nickel alloys.

Application

  • Offshore Oil & Gas:

    • Subsea pipelines, umbilicals, and heat exchangers exposed to chlorides and H₂S.

  • Desalination Plants:

    • Reverse osmosis (RO) systems, brine heaters (resists scaling and pitting).

  • Chemical Processing:

    • Reactors, scrubbers, and piping for sulfuric acid, phosphoric acid, and chloride-containing media.

  • Flue Gas Desulfurization (FGD):

    • Resists acidic condensates (pH 2–4) with chlorides and fluorides.

ASTM A403 WPS31254 Duplex Stainless Steel 254SMO Fittings 90 Degree LR Elbow


Product Tags:

254SMO Duplex Stainless Steel Fittings

      

90 Degree LR Elbow

      
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