F51 / S31803 / 1.4462

Duplex Stainless Steel

Corresponding Standards:
EN/DIN 1.4462
X2CrNiMoN22.5.3
AFNOR Z2CND22.05Az
AISI - A182 F51 (329LN) / F60
UNS - ASTM A276 S31803 / S32205
BRANDS® SAF 2205 - SANMAC
URANAUS 45N
FALC223
SS 2377
BS (WROUGHT) 318S13
BS (CAST) 332C15
EN (10283) 1.4470
F51 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.
dia. Metric dia. Imperial Tol.
12.70mm 0.500" BDh9
16.00mm 0.629" BDh9
19.05mm 0.750" h9
22.23mm 0.875" h9
25.00mm 0.984" k13
25.40mm 1.000" k11
28.58mm 1.125" k11
31.75mm 1.250" k11
35.00mm 1.378" k11
38.10mm 1.500" k11
44.45mm 1.750" k11
47.63mm 1.875" k11
50.80mm 2.000" k11
53.98mm 2.125" k11
57.15mm 2.250" k11
60.33mm 2.376" k11
63.50mm 2.500" k11
69.85mm 2.750" k11
76.20mm 3.000" k11
82.55mm 3.250" k11
88.90mm 3.500" k11
95.25mm 3.750" k11
101.60mm 4.000" k11
107.95mm 4.250" k11
114.30mm 4.500" k11
120.65mm 4.750" k11
127.00mm 5.000" -0 / +1.0mm
139.70mm 5.500" -0 / +1.0mm
152.40mm 6.000" -0 / +1.0mm
165.10mm 6.500" -0 / +1.0mm
177.80mm 7.000" -0 / +1.0mm
190.50mm 7.500" -0 / +1.0mm
203.20mm 8.000" -0 / +1.0mm
215.90mm 8.500" -0 / +1.0mm
220.00mm 8.661" -0 / +1.0mm
228.60mm 9.000" -0 / +1.0mm
230.00mm 9.055" k13
241.30mm 9.500" -0 / +1.0mm
254.00mm 10.000" -0 / +1.0mm
266.70mm 10.500" -0 / +1.0mm
280.00mm 11.024" -0 / +1.0mm
304.80mm 12.000" -0 / +2.0mm
332.00mm 13.071" -0 / +2.0mm
357.00mm 14.056" -0 / +2.0mm
383.00mm 15.079" -0 / +2.0mm
Note: Non stock items are available ex-mill, in short lead times. Please contact us with your enquiry.
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Intoco UK and Europe - F51 / UNS 31803 / 1.4462 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) and now Duplex stainless steel conforming to ATSM / AISI / F51 in bar form.

The duplex material is NACE and NORSOK approved. It also conforms, or is similar to EN / DIN (Werkstoff) 1.4462 and X2CrNiMoN22-5-3, UNS 31803, Afnor Z2CND22-5Az BS318S13, SS2377, BS332C15, EN (10283) 1.4770 and branded steel SAF2205, URANUS 45N and FALC223. Duplex 1.4462 / 31803 / F51 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 (22%) and a moderate nickel content (5.5%). They also have 3% Moly./Molybdenum. At this level, F51 / UNS 31803 / 1.4462 materials, are too low in nickel to produce a fully austenitic structure, thus producing the duplex microstructure (ferrite and austenite). The main advantage of Duplex F51 / 1.4462 / UNS 31803 stainless steel is the combination of properties given by both the austenitic and ferritic structure (austeno-ferritic).

Duplex stainless steels Acier, inoxydable, Rostfreier, Stahl, Acciaio, Inossidabile, Aco, Inoxidável, Acero, Inox, Inoxidables, Rostfrei, Roestvrij to F51 / UNS 31803 / Afnor Z2CND22-5Az / X2CrNiMoN22-5-3 / B.S. 318S13 / SAF2205 / 1.4462 / Uranus 45N / FALC223 / SS2377 / 1.4470 / 329LNhave 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 Duplex grade 2205, F51, UNS 31803, 1.4462, AFNOR Z2CND22-5Az, BS318S13, SAF2205, X2CrNiMoN22-5-3, 329LN, URANUS 45N, FALC223, SS2377, BS332C15, 1.4470. Can be used for heat exchangers, chemical tanks, refineries, shafts (marine, etc) pressure vessel parts, flanges and pipes for the oil and gas industries, paper industry, compressor parts and seawater desalination plants. Intoco offer Duplex material in round bar (rolled / forged) complete with the stainless mill certs conforming to ASTM/AISI F51 / UNS 31803 / 1.4462 Duplex stainless steel Acier, inoxydable, Rostfreier, Stahl, Acciaio, Inossidabile, Aco, Inoxidável, Acero, Inox, Inoxidables, Rostfrei, Roestvrij.

The above text is given as an overview of Super Duplex Stainless Steel and is not to be relied upon for a specification.