Leading Supplier of 2205 Duplex Stainless Steel
Specifications of 2205 Duplex Stainless Steel :
S31803 Stainless Steel | F51 Duplex Stainless Steel | 1.4462 DIN X2CrNiMoN22 5 3 | ASTM A276-98b | UNS S31803
*Due to different country, it has different name for the Grade 2205 Duplex Stainless Steel.
Other Designations of 2205 Duplex
Equivalent materials to grade 2205 Stainless Steel / S31803 Duplex :
- ASTM A182 Grade F51
- ASTM A240
- ASTM A789
- ASTM A790
- DIN 1.4462
Properties of S31803 Duplex
S31803 Duplex is a (two-phase) ferritic/austenitic stainless steel with high strength and excellent corrosion resistance, as supplied in the annealed condition with a maximum Brinell hardness of 290 (Rc31).
Characterised by high yield strength, double that of the standard austenitic stainless steel grades, good fatigue strength plus excellent resistance to stress corrosion cracking, crevice, pitting, erosion and general corrosion in severe environments. Again generally outperforming the standard austenitic stainless steel grades.
S31803 Duplex cannot be hardened by thermal treatment, but strength and hardness can be increased substantially by cold working, with a subsequent reduction in ductility.
It is used extensively by the Marine, Chemical, Petrochemical, Pulp and Paper, Oil and Gas, Transport and allied processing industries.
Mechanical Property Requirements – Annealed (As Supplied) to ASTM A276-98b UNS S31803 for Hot and Cold Finished
Tensile Strength 0.2 % Yield Strength Elongation in 50mm Hardness
MPA (min) MPA (min) % (min) Max
620 448 25 290
*Table 1 : Mechanical Property Requirement for DIN 1.4462 Duplex Stainless Steel
Typical Mechanical Properties at room temperature
Tensile Strength Yield Strength Elongation in 50mm Charpy V Impact Hardness MPA MPA % J HB Rc
650 - 900 570 30 130 235 23
*Table 2 : Mechanical Properties for F51 Duplex Stainless Steel (Annealed)
Elevated Temperature Properties – While the oxidation resistance of 2205 Duplex Stainless Steel is good at high temperature as with other duplex stainless steel grades, it is subject to embrittlement when exposed to temperatures above 300 oC even for short periods. It is subject to embrittlement at 475 oC when exposed for 2 hours only, also between 370 oC and 540 oC over a longer period.Precipitation of sigma phase will also occur above 650 oC resulting in decreased ductility and corrosion resistance.
*2205 / 1.4462 Duplex is therefore not recommended for use at temperatures above 300 oC.
Bending in S31803 / F51 Duplex Stainless Steel:
Cold Bending – Cold bending will be extremely difficult due to the high yield strength. Any cold working causing more than 10% deformation should be followed by annealing.
Hot Bending – Hot bending should be performed at 950 oC – 1000 oC followed by annealing.
Corrosion Resistance in S31803 / 2205 Duplex Stainless Steel:
General Corrosion – 2205 Duplex Stainless Steel has superior resistance to general corrosion in most media than SUS316L or SUS317L austenitic stainless steel grades
Stress Corrosion Cracking – 2205 Duplex Stainless Steel has a much higher resistance to stress corrosion cracking than SUS304L or SUS316L austenitic stainless steel grades.
Pitting Corrosion – 2205 Duplex Stainless Steel has a higher resistance to pitting corrosion than 316L or 317L austenitic stainless steel grades.
Crevice Corrosion / Erosion Corrosion – 2205 Duplex Stainless Steel has a higher resistance to crevice corrosion and erosion-corrosion than SUS316L austenitic stainless steel grade.
Corrosion Fatique – 2205 Duplex Stainless Steel has better fatigue strength in corrosive environments than the standard austenitic stainless steel grades due to its higher strength and higher corrosion resistance.N.B. For optimum corrosion resistance, surfaces must be free of scale and foreign particles. Finished parts should be passivated.
Forging – Heat uniformly to 1150 oC. Hold until temperature is uniform throughout the section.Do not forge below 900 oC.Finished forgings should be air cooled.
Finally forgings will require to be annealed in order to obtain optimum mechanical properties and corrosion resistance
Chemical Composition in F51 Duplex Stainless Steel (%)
|Min. %||Max. %|
Table 3 : Chemical Composition for F51 / DIN 1.4462 Duplex Stainless Steel
Technical Applications :
- Anchor Guides
- Conveyors, Fasteners, Bushings
- High Strength Pump Shafts
- Propellor Shafts
Our Sales and Supplier Network in 2205 / S31803 / F51 Duplex Stainless Steel :
With over 15 years of experience and strong global sourcing networking in the market, we are proud to be the S31803 / 2205 / F51 Duplex Stainless Steel Supplier and Exporter to :
- Australia, Pakistan, Malaysia, Singapore, Taiwan, China, Vietnam, Belgium, Japan, South Korea, Philippines, France, United Kingdom, Indonesia, Thailand, Hong Kong, China, Sweden, United States, Dubai, Finland, Brunei, Germany.
Besides, we have the full range of Stainless Steel sheets, Stainless Steel Round Bar, Stainless Steel Rods, Stainless Steel Plate which consists of
– 300 Series Stainless Steel : SUS304, SUS304L, SUS309, SUS310, SUS316Ti, SUS317, SUS321, SUS347
– 400 Series Stainless Steel : SUS403, SUS410, SUS420, SUS431, SUS440C, SUS630, SUS904L
– Nitronic 30, Nitronic 50, Nitronic 60
– Super Duplex S32750, S32760