Duplex Steel F51 (UNS S31803), X2CrNiMoN22-5-3, 1.4462 Round Bars
ASTM A182 F51 (UNS S31803) is a Duplex Stainless Steel that offers a high resistance to general , pitting, stress and crevice corrosion, as well as a high mechanical strength and good weldability. As a result, this is a highly suitable material for applications dealing with environments containing chlorides and and hydrogen sulphide.
It is also known as X2CrNiMoN22-5-3 / 1.4462 Round Bars.
The characteristic feature of F51 / UNS S31803 Duplex Stainless Steels is their dual phase microstructure, comprising of approximately 50% of austenitic and 50% of ferrite. This provides the material with an excellent combination of high strength and corrosion resistance.
ASTM A182 F51 equates to UNS S31803. This was the original caption for a 22% Cr duplex stainless steel. This grade, with a tighter specification, is captioned as F60, equating to UNS S32205. Consequently, S32205 can be dual-certified as S31803 but not vice-versa. It accounts for around 80% of overall duplex stainless steel production.
M/s New Arise Metal is Major Stockist of Duplex Stainless Steel Bars in F51, 1.4462, x2crnimon22-5-3, UNS S31803 from Reputed Mill like Ambica, Laxcon, Mukund etc.
Availability :
Duplex F51 (UNS S31803) is available in Plate, Sheet, Round Bar, Flat Bar and Forging Stock for sizes contact us.
Chemical Composition of F51, 1.4462, X2CrNiMoN-22-5-3 :
| Elements | Min. | Max. |
| C | - | 0.030 |
| Mn | - | 2.00 |
| P | - | 0.030 |
| S | - | 0.015 |
| Si | - | 1.00 |
| Cr | 21.00 | 23.00 |
| Ni | 4.50 | 6.50 |
| Mo | 2.50 | 3.50 |
| N | 0.80 | 0.20 |
Specifications :
- ASTM A182 F51
- ASTM A276 F51
- ASTM A479 F51
- AISI F51
- BS 318S13 (Wrought)
- BS 332C15 (Cast)
- WS 1.4462
- X2CrNiMoN22.5.3
- AFNOR Z2CND22.05Az
- UNS S31803
- SAF2205 - SANMAC (Brand name)
- URANUS 45N (Brand name)
- FALC223 (Brand name)
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Standards of X2CrNiMoN-22-5-3 :
• EN 10222-5: 2017 Steel forgings for pressure purposes. Martensitic, austenitic and austenitic-ferritic stainless steels
• EN 10250-4: 2000 Open steel die forgings for general engineering purposes. Stainless steels
• EN 10088-3: 2014 Stainless steels. Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes
• EN 10272: 2016 Stainless steel bars for pressure purposes
• AD 2000 MERKBLATT W0
• AD 2000 MERKBLATT W10
• AD 2000 MERKBLATT W2
• ASTM A276:2017
• ASTM A479:2021
• ASTM A182:2022
• ASTM A182M:2022
• NACE MR0175
• NACE MR0103
• ISO 15156:2009
• ISO 15156:2015
• ISO 17945:2015
• PED 2014/68/EU
• NORSOK M-630