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ASME B16.5 A182 F44 / Alloy 254 SMO / 1.4547 / UNS S31254 WN RF Flange

ASME B16.5 A182 F44 / Alloy 254 SMO / 1.4547 / UNS S31254 WN RF Flange

  • ASME B16.5 A182 F44 / Alloy 254 SMO / 1.4547 / UNS S31254 WN RF Flange
  • ASME B16.5 A182 F44 / Alloy 254 SMO / 1.4547 / UNS S31254 WN RF Flange
  • ASME B16.5 A182 F44 / Alloy 254 SMO / 1.4547 / UNS S31254 WN RF Flange
  • ASME B16.5 A182 F44 / Alloy 254 SMO / 1.4547 / UNS S31254 WN RF Flange
ASME B16.5 A182 F44 / Alloy 254 SMO / 1.4547 / UNS S31254 WN RF Flange
Product Details:
Place of Origin: CHINA
Brand Name: YUHONG
Certification: ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number: ASTM A182 F44 Stainless Steel Flange
Payment & Shipping Terms:
Minimum Order Quantity: 1PC
Packaging Details: PLYWOOD CASE / PALLET
Delivery Time: 7 DAYS
Payment Terms: L/C,T/T
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Detailed Product Description
Product Name: Stainless Steel Flange Dimension: ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges Etc.
Standard: ASTM A182, ANSI B16.5, ANSI B16.47 Series A & B Material: F44 / Alloy 254 SMO / 1.4547 / UNS S31254
Size: 1/2" To 48" Process: Forged
Pressure: Class150/300/600/9001500/2500 Type: Threaded Flange,Slip On Flange,socket Weld Flange,weld Neck Flange,LAP Joint Flange
Flange Face: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) Application: Petroleum,chemical,etc,fittings And Connection,beer
High Light:

UNS S31254 RF Flange


ASME B16.5 Steel Tube Flange


WN Alloy Steel Flanges

ASME B16.5 A182 F44 / Alloy 254 SMO / 1.4547 / UNS S31254 WN RF Flange​ 

SMO 254 is austenitic stainless steel product that is designed for the maximum resistant to crevice corrosion and pitting. It comes with high levels of molybdenum, chromium, nitrogen and is great for high chloride environments like bleach plants and chloride processing streams. At Ritinox Overseas, we are ready to supply, manufacture, stock, distribute and also export 254 SMO along with other products like SMO 254 pipe fittings, SMO 254 forge fittings, SMO 254 tube fittings, SMO 254 weldolets, SMO 254 flanges, SMO 254 seamless pipes and SMO 254 seamless tubes.

Other Trade Names

UNS Number S31254
Werkstoff 1.4529
ASTM Specifications A479, A473, A240, F44
Other Common Names SMO 254, 254SMO, Alloy 254, EN 1.4547



A182 F44 Flange Chemical Composition

Cr Ni Mo N Cu P
254 SMO 0.02 1.00 19.50-20.50 17.50-18.50 6.00-6.50 0.18-0.22 0.50-1.00 0.03 0.01 0.8


A182 F44 Flange Mechanical Properties (Annealed)

Hardness (HB) Tensile Strength (Mpa) Yield Strength (Mpa) Elongation (%) (Long.) Impact Value (J) (Long.)
260 max 650-850 300-340 35 min 100 min



Carbon Steel DIN 2576 Flange ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, DIN 1.0402, DIN 1.0460, DIN 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, High Yield CS ASTM A694 / A694 (F52 F56 F60 F65 F70 F80)
Stainless Steel DIN 2576 Flange ASTM/ASME A/SA182 F304, F304L, F316, F316L, ASTM/ASME A/SA351 CF8, CF3, CF8M, CF3M, DIN 1.4301, DIN 1.4306, DIN 1.4401, DIN 1.4404, DIN 1.4308, DIN 1.4408, DIN 1.4306, DIN 1.4409
Alloy Steel DIN 2576 Flange ASTM A182 / ASME SA182 F5, F9, F11, F12, F22, F44, F91
Titanium DIN 2576 Flange ASTM B381 / ASME SB381, Titanium Gr. 1, Titanium Gr. 2, Titanium Gr. 4, Titanium Gr. 5, Titanium Gr. 7
ASTM R50250/GR.1 | R50400/GR.2 | R50550/GR.3 | R50700/GR.4 | GR.6 | R52400/GR.7 | R53400/GR.12 | R56320/GR.9 |R56400/GR.5
Copper DIN 2576 Flange T1, T2, C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910,C10920, TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000,C12200, C12300, TU1, TU2, C12500, C14200, C14420, C14500, C14510, C14520, C14530, C17200, C19200, C21000, C23000, C26000, C27000, C27400, C28000, C33000, C33200, C37000, C44300, C44400, C44500, C60800, C63020, C68700, C70400, C70600, C70620, C71000, C71500, C71520, C71640, etc
Copper Nickel DIN 2576 Flange ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Brass DIN 2576 Flange 3602 / 2604 / H59 / H62 / etc.
Inconel DIN 2576 Flange ASTM B564 / ASME SB564, Inconel 600, 601, 625, 718, 783, 690, x750 DIN 2576 Flange
Hastelloy DIN 2576 Flange ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X Flanges
Monel DIN 2576 Flange ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Alloy 20 DIN 2576 Flange ASTM B462 / ASME SB462, Carpenter® 20 Alloy, Alloy 20Cb-3
Aluminium DIN 2576 Flange 5052 /6061/ 6063 / 2017 / 7075 / etc.
Nickel DIN 2576 Flange ASTM B564 / ASME SB564, Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Duplex DIN 2576 Flange S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Super Duplex DIN 2576 Flange S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Incoloy DIN 2576 Flange ASTM B564 / ASME SB564, Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925 Flanges

Various Kinds of Flanges we can supply as below
1. Slip-on Flanges.
Slip-on Flanges have a lower initial cost than welding neck flanges because they require less accuracy in cutting pipe to length, and they provide a greater ease of alignment in assembly. However, their calculated strength under internal pressure is approximately 2/3's the strength of welding neck flanges, and their life under fatigue is 1/3 shorter. Slip-on Flanges are limited to 1/2" to 2½" sizes in 1500lbs standard.
2. Threaded Flanges
Threaded Flanges are used for special applications. They can be assembled without welding and can be used in extremely high pressure services--at or near atmospheric pressure--where alloy steel is essential for strength. Threaded flanges are not suited for conditions involving temperature or bending stresses, or under cyclic conditions where leakage through the threads may occur.
3. Weld Neck Flanges
Weld Neck Flanges have a long tapered hub and gradual transition of thickness in the region of the butt weld joining them to the pipe. The tapered hub provides important reinforcement to the flange and resistance to dishing. This type of flange is preferred for severe service conditions resulting from high pressure, sub-zero or high temperatures.
4. Blind Flanges
Blind Flanges are used to blank off the ends of piping, valves and pressure vessel openings. Blind Flanges can handle high stress from internal pressure and bolt loading since the maximum stresses in the blind flange are bending stresses at the center.
5. Socket Weld Flanges
Socket Weld Flanges were developed for use on small size high pressure piping. With an internal weld, socket weld flanges are stronger and have greater fatigue strength than double welding a slip-on flange. Smooth bore conditions can be easily attained by grinding the internal weld. This flange is commonly used in chemical process piping.
6. Lap Joint Flanges
Lap Joint Flanges are used with lap joint stubs. Lap joint flanges are commonly used in carbon or low alloy steel piping systems that need to be frequently dismantled for inspection and cleaning. They should not be used at any points where severe bending stresses occur.

254 SMO Weld Neck Flanges 254 SMO WN Flanges are widely used in high-pressure piping systems and can be easily recognised by the

long tapered hub. The size of the bore hole is usually equal to the size of the pipe. Alloy 254 SMO Weld Neck Flanges and A182 F44 S31254

Weld Neck Flanges is in ready stock with Siddhagiri Metals and Tubes.

ASME B16.5 A182 F44 / Alloy 254 SMO / 1.4547 / UNS S31254 WN RF Flange 0


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