F55 / S32760 / 1.4501
Super Duplex Stainless Steel
PREN = 40 Minimum

Corresponding Standards:
EN/DIN 1.4501
X2CrNiMoCuWN25.7.4
AFNOR Z3CND25.06Az
UNS S32760
AISI F55 (A182 / A276 / A479)
GOST 12Kh13
BRANDS® ZERON100
Similar to:
UNS S32550 / S32520 / FERRALIUM 255-SD50
UNS S32750 / AISI-F53 / 1.4410
Z3CNDU25.07Az
X2CrNiMoCuN25.6.3
1.4507
Uranus 52N
SAF 25.07 SANMAC

AJA ISO 9001:2000 Reg No. 59
View our ISO 9001:2000 Certificates

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Intoco UK and Europe - F55 / UNS 32760 / S32760 / 1.4501 Super Duplex stainless steel

Intoco, a UK based manufacturing company, specialise in no-compromise manufacture using state of the art CNC equipment, and the finest steels available. We are also a very large stockholder of hot work tool steels, stainless steels (440c / 1.4125 / 4125 / X105CrMo17), duplex stainless steel (ASTM A182 A276 / AISI / F51 EN / DIN (Werkstoff) 1.4462 and X2CrNiMoN22-5-3, UNS 31803 / S31803 / S32205, Afnor Z2CND22-5Az, BS318S13, SS2377, BS332C15, EN (10283) 1.4770, branded steel SAF2205, URANUS 45N, FALC223) and now Super Duplex stainless steel conforming to ASTM / AISI / F55 in round bar and plate / sheet form.

The super duplex material is NACE and NORSOK approved and has a PREN (pitting resistance equivalent number - an empirical relationship to predict the pitting resistance of austenitic and duplex stainless steels) of 40. "Super" duplex grades have enhanced pitting and crevice corrosion resistance compared with the ordinary austenitic or duplex types. This is due to the further additions of chromium, molybdenum, and nitrogen to these grades. It also conforms, or is similar to, EN / DIN (Werkstoff) 4501 / 1.4501 / X2CrNiMoCuWN25.7.4 / UNS 32760 / S32760, UNS - ASTM A276 S32760 / AISI F55 / GOST 12Kh13 / Afnor Z3CND25.06Az and branded steel Zeron 100. Also 1.4410 / UNS S32550 / UNS S32750 / Z3CNDU25.07Az / SS2328 / X2CrNiMoCuN25.6.3 / SAF 2507 SANMAC / Uranus 52N.

Super Duplex 1.4501 / 32760 / F55 Stainless steel Acier, inoxydable, Rostfreier, Stahl, Acciaio, Inossidabile, Aco, Inoxidável, Acero, Inox, Inoxidables, Rostfrei, Roestvrij materials get their name, duplex, because they contain both ferritic and austenitic microstructure. They have a high chrome / chromium content (25%) and a moderate nickel content (7%). They also have 3 to 4 % Moly./ Molybdenum. At this level, F55 / UNS 32760 / 1.4501 materials, are too low in nickel to produce a fully austenitic structure, thus producing the duplex microstructure (ferrite and austenite). The main advantage of super-duplex F55 / UNS 32760 / 1.4501 stainless steel is the combination of properties given by both the austenitic and ferritic structure (austeno-ferritic).

Super duplex stainless steels Acier, inoxydable, Rostfreier, Stahl, Acciaio, Inossidabile, Aco, Inoxidável, Acero, Inox, Inoxidables, Rostfrei, Roestvrij to F55 / UNS S32760 / EN / DIN (Werkstoff) 4501 / 1.4501 / X2CrNiMoCuWN25.7.4 / UNS 32760 / UNS - ASTM A276 S32760 / AISI F55 / GOST 12Kh13 / Afnor Z3CND25.06Az and branded steel Zeron 100 have excellent corrosion resistance, increased resistance to chloride attack, good resistance to stress corrosion cracking, tensile and yield strength higher then conventional austenitic or ferritic grades of stainless steel, good weldability and good formability.

Stainless steel super-duplex grade F55 / UNS S32760 / EN / DIN (Werkstoff) 4501 / 1.4501 / X2CrNiMoCuWN25.7.4 / UNS 32760 / UNS - ASTM A276 S32760 / AISI F55 / GOST 12Kh13 / Afnor Z3CND25.06Az and branded steel Zeron 100, can be used for heat exchangers, chemical tanks, refineries, shafts (marine, etc) pressure vessel parts, flanges, fittings & pipes for the oil and gas industries and offshore technology, paper industry, compressor parts and seawater desalination plants amongst many other applications. Intoco offer super duplex materials in round bar (rolled / forged) and sheet / plate, complete with the stainless mill certs conforming to EN10204/3.1 & 3.2 if required with certification supplied by Lloyd's Register, etc. ASTM/AISI F51 / UNS 31803 / 1.4462 Duplex stainless steel Acier, inoxydable, Rostfreier, Stahl, Acciaio, Inossidabile, Aco, Inoxidável, Acero, Inox, Inoxidables, Rostfrei, Roestvrij.


F55 / S32760 Round Bar Super Duplex Stainless Steel

Supply Condition

ISO Tollerances

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F51 Duplex Round Bar 17-4PH Round Bar 440c Round Bar 440c Flat Plate Link to H13 toolsteels Link to Intoco manufacturing Intoco logo Stainless steel cage Send your enquiry Contact Us
F55 Super Duplex Range (Ex-Stock):
Forged/Rolled, Solution-annealed, Machined bars in 3-8 metre lengths (Cut to length if required). Full mill Certs with goods.
  Metric Imperial Tol. Due
dia 12.70 0.500" K12  
dia 15.88 0.625" h9 5/08
dia 19.05 0.750" h9 5/08
dia 22.23 0.875" K12  
dia 25.40 1.000" K11 / K12  
dia 28.58 1.125" K12  
dia 31.75 1.25" K11 / K12  
dia 34.93 1.375" K12  
dia 38.10 1.500" K11 / K12  
dia 44.45 1.750" K11  
dia 50.80 2.000" K11  
dia 57.15 2.250" K11  
dia 63.50 2.500" K11  
dia 69.85 2.750" K11  
dia 76.20 3.000" K11 / K12  
dia 82.55 3.250" K11 / K12  
dia 88.90 3.500" K11  
dia 90.00 3.544" K12  
dia 95.25 3.750" K11  
dia 101.60 4.000" K11 / K12  
dia 107.95 4.250" K11  
dia 114.30 4.500" K11 / K12  
dia 120.65 4.750" K11  
dia 127.00 5.000" K12  
dia 139.70 5.500" K11 / K12  
dia 152.40 6.000" K12  
dia 165.10 6.500" K12  
dia 177.80 7.000" K12  
dia 190.50 7.500" K12  
dia 200.00 7.874" DIN 1013  
dia 203.20 8.000" K12  
dia 215.90 8.500" K12  
dia 228.60 9.000" K12  
dia 241.30 9.500" K15 4/08
dia 254.00 10.000" DIN 1013  
dia 266.70 10.500" K12 4/08
dia 279.40 11.000" K12 4/08
dia 292.10 11.500" K12 4/08
dia 304.80 12.000" K12 4/08
dia 330.20 13.000" K12  
dia 332.00 13.071" +2/-0 5/08
dia 355.6 14.000" +2/-0  
dia 381.0 15.000" +2/-0  
dia 406.4 16.000" +2/-0  
Note: Non stock items are available ex-mill, in short lead times. Please contact us with your enquiry.