What is Duplex & Super Duplex Steel F51 / F52 / F53 Forged Fittings ?

The excellent corrosion resistance is said to be the ASTM A182, F51, UnS S31803 Duplex Fittings which provides a wide variety of outstanding corrosion resistance, which prevents corrosion in sea water and other environmental chlorides at a temperature of filling and over 50 degrees of calcium. They have high strength in comparison with high austenitic and 22% duplex steels. They have extra ductility and are strong and work well at low temperatures.

They offer excellent resistance to environmental stress corrosion made of chloride. In both resistance and strength, they find an excellent application. Duplex Fittings for better corrosion resistance, ASTM A182 F51 UNS S31803. They are highly suited for temperatures above 300oC because they usually are precipitated by fragile micro-components.

Duplex Steel Forged Fittings, Duplex Steel F51 High Pressure Forged Fittings, ANSI/ASME B16.11 Duplex Steel F52 Forged 45 Deg Socket Weld Elbow, Duplex Steel F51 Socketweld Fittings, UNS S31803 Threaded Equal & Unequal Tees Manufacturer.

Duplex Steel F51 / F52 Threaded Fittings, Duplex S32205 ASTM A182 F53 Threaded Half coupling, Duplex Steel UNS S31803 Screwed Fittings, Duplex Steel Threaded Fittings, Duplex Steel Forged Unions Suppliers

The manufacturer performs various tests to make sure that design complies with all requirements for pressure coding and standards to qualify the design of ASTM a182 f51/f60 forged fittings. These include hydrotesting, proof testing (break-out tests), non-destructional testing (magnetic particulate testing, liquid penetrative test, pmi testing, ultrasonic testing and radiograms).

Other examinations include metallurgical testing (micro and macro tests) and other special testing such as intergranular corrosion testing and visual examination.

ASTM/ASME B366/SB366 Duplex & Super Duplex Steel F51 / F52 / F53 Forged Fittings Specifications

Grade Duplex & Super Duplex Steel F51 / F52 / F53
Standard ASTM A182 & ASME SA182
Dimensions ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
Size 1/8” NB to 4” NB (Socketweld & Screwed-Threaded)
Form 90 Elbow, 45 Elbow, Long Radius Elbow, Short Radius Elbow, Concentric Reducer, Eccentric Reducer, Equal Tee, Unequal Tee, Lateral Tee, Cross, Bends 1.5d, 3d, 5d, 10d, U bend, 180 Deg Bend, Short Stub End, Long stub end, End Cap, Dish Cap
Schedule SCH 5 To SCH XXS
Wall Thickness from 2 to 40 mm
Type Seamless / Welded / Fabricated
Duplex 31803 1.4462 S31803
Super Duplex S2507 1.4410 S32750 / S32760 / S32950
Weight% C Mn P S Si Cr Ni Mo N
Duplex F51 0.03 max 2.0 max 0.03 max 0.02 max 1 max 21-23 4.5-6.5 2.5-3.5 0.80-0.20
max. 0.03 1.20 24.75 6.70 4.00 <=0.80 N=0.28
P=max. 0.035
S=max. 0.020
Alloy Tensile Strength N/mm² Proof Strength 0.2% N/mm² Elongation (%)
Hardness Brinell
F51 105 55 35 170-255
2507 F53 795 550 15 310-32*

Other Products

Forged Super Duplex F51 Rings Forged F51 2205 Sleeves
Steel F53 Fitting F53 Super Duplex Weld Fitting
F53 Super Duplex Welded Fitting Saf 2507 F53 Forged Fitting
Forged Duplex Steel F51 Wheel Blanks Duplex 2205 F51 Blanks
F53 Super Duplex Socket weld Fitting Duplex F53 Threaded Fitting
Forged F51 Grade Shaft F51 2205 Valve Forging

ASTM/ASME A182/SA182 Duplex & Super Duplex Steel F51 / F52 / F53 Forged Fittings

  • Forged Super Duplex F51 Rings
    FOB Price: USD $0.5-1000 / Piece
  • F53 Super Duplex Socket weld Fitting
    FOB Price: USD $0.5-1000 / Piece
  • Duplex F51 Steel Forged Gear Blanks
    FOB Price: USD $0.5-1000 / Piece
  • Saf 2507 F53 Forged Fitting
    FOB Price: USD $0.5-1000 / Piece
  • Duplex F53 Threaded Fitting
    FOB Price: USD $0.5-1000 / Piece


We Sumit Impex Ensure the best quality of Packing , because its play important role especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put extraordinary concern regarding packaging.

We pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,

  • Boxes and Crates
  • Shrink-wrapped
  • Carton boxes
  • Wooden pallets
  • Wooden boxes
  • Wooden crates

Testings (Destructive, Non Destructive)

  • Mechanical Testing Such as Tensile, Elongation, Reduction of Area
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Positive Material Identification – PMI Testing
  • Chemical Analysis – Spectro Analysis
  • Intergranular Corrosion (IGC) Test
  • Pitting Resistance Test
  • Dye Penetrant Test (DP Test)
  • Micro Test
  • Macro Test
  • Hardness Test
  • Flaring Test
  • Flattening Test
  • Hydrostatic Test
  • Radiography Test
  • Ultra Sonic Test (UT)
  • Eddy Current Testing
  • Impact Test
  • Bend Test

Application Industries

These material are not a single material but the name for a family of corrosion resistant steels. Like many scientific breakthrough the origins of stainless steel lies in a lucky accident. From the smallest part of zipper to the largest building skyscraper, stainless steel is an essential part of modern life.Stainless steel’s strength, resistance to corrosion and low maintenance make it the ideal material for a wide range of applications. It is also has a long life cycle and is 100% recyclable.

  • Construction
  • Bridges
  • Petrochemical Industry
  • Ship Building
  • Engineering
  • General Structural Purposes
  • Offshore and Onshore Services

Stainless Steel Sheet Manufacturers

Country we serve / City we deliver

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& Riyadh, Moscow, Toronto, Geoje-si, Karachi, Istanbul, Courbevoie, Milan, Chiyoda, Thane, Aberdeen, Brisbane, Lagos, Lahore, Vung Tau, Faridabad, Ho Chi Minh City, Colombo, Santiago, Jaipur, Jeddah, Ludhiana, Doha, Haryana, Vadodara, Atyrau, Petaling Jaya, Ahvaz, Ernakulam, Gimhae-si, Surat, Sydney, Bengaluru, Mexico City, Ulsan, Madrid, Bangkok, Pimpri-Chinchwad, Thiruvananthapuram, New York, Bhopal, Howrah, Coimbatore, Chennai, Edmonton, Los Angeles, Rajkot, Mumbai, Sharjah, Cairo, Seoul, London, Jakarta, Abu Dhabi, Dammam, Nashik, Dubai, Hyderabad, Houston, Manama, Calgary, Granada, Rio de Janeiro, Navi Mumbai, Al Khobar,Kanpur, Hong Kong, Nagpur, Port-of-Spain, Ankara, Baroda, Algiers, Ahmedabad, Perth, Gurgaon, Singapore, Busan, Montreal, Al Jubail, Secunderabad, Ranchi, Jamshedpur, New Delhi, Tehran, Kolkata, Caracas, Melbourne, Kuwait City, Dallas, Pune, Muscat, Noida, Indore, Hanoi, Chandigarh, La Victoria, Kuala Lumpur, Bogota, Visakhapatnam