UNS S31803 1.4462 F51 Forged Welding Neck Flange WN Flange
Product Details
UNS S31803 welding neck flanges
,1.4462 wn flange forged
,F51 forged welding neck flanges
Material to UNS S31803 (and related specifications) is a duplex stainless steel featuring a microstructure of 50:50 austenite and ferrite. This steel combines excellent mechanical strength (typically over 480 MPa yield strength) with good ductility and moderate to high corrosion resistance in various environments.
By agreement, the alloy can be supplied with a PREN (Pitting Resistance Equivalent) >34, ensuring maximum pitting corrosion resistance for this grade. The steel also offers superior resistance to stress corrosion cracking and maintains good notch ductility at ambient and subzero temperatures.
These properties make this duplex steel an effective alternative to 300 series stainless steels in applications requiring higher mechanical strength, reduced weight, and/or enhanced stress corrosion cracking resistance.
The machining and welding of this duplex stainless steel grade present no particular challenges. Comprehensive guidance notes are available upon request.
- Pumps, valves, chokes, Xmas trees
- Pipework, flanges, bolting, connectors & manifolds
- Oil and gas industry equipment
- Brewing equipment, power generation systems
- Chemical engineering applications
- UNS S31803 in various ASTM product form specifications
- EN 10088-3 1.4462 (Grade X2CrNiMoN22-5-3)
- NORSOK MDS D41 to D45, D47 & D48
- ASTM A182 F51
- NACE MR01-75 / ISO 15156
| Property | Description |
|---|---|
| R eH | Minimum yield strength / Mindestwert der oberen Streckgrenze / Limite d'elasticite minimale |
| R m | Tensile strength / Zugfestigkeit / Resistance a la traction |
| A | Minimum elongation / Mindestwert der Bruchdehnung / Allongement minimal |
| J | Notch impact test / Kerbschlagbiegeversuch / Essai de flexion par choc |
| Code | Description |
|---|---|
| +A | Soft annealed |
| +AC | Annealed to achieve spheroidization of the carbides |
| +AR | As rolled |
| +AT | Solution annealed |
| +C | Cold drawn / hard |
| +CR | Cold rolled |
| +FP | Treated to ferrite-pearlite structure and hardness range |
| +I | Isothermal annealing |
| +LC | Cold drawn / soft |
| +M | Thermo mechanical rolling |
| +N | Normalized |
| +NT | Normalized and tempered |
| +P | Precipitation hardened |
| +PE | Peeled |
| +QA | Air quenched and tempered |
| +QL | Liquid quenched and tempered |
| +QT | Quenched and tempered |
| +S | Treated to improve shearability |
| +SH | As rolled and turned |
| +SR | Cold drawn and stress relieved |
| +T | Tempered |
| +TH | Treated to hardness range |
| +WW | Warm worked |
| +U | Untreated |
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