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JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
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5mm – 100mm Duplex 2205 Plate , Duplex Steel Pipe S31803 2B 1D surface

JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
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5mm – 100mm Duplex 2205 Plate , Duplex Steel Pipe S31803 2B 1D surface

Brand Name : AUTO KUMPO / TISCO / BAOSTEEL

Model Number : 2205

Certification : SGS,BV

Place of Origin : China(mainland)

MOQ : 1 Ton

Price : 4000-5500 USD/Ton

Payment Terms : L/C, T/T, Western Union

Supply Ability : 15000Tons

Delivery Time : 5-10 days according to the quantity

Packaging Details : standard export seaworthy packing or as required

company type : agent of TISCO

processing technology : cold rolled

grade : S31803 s32205 2507 s32750

surface : 2B BA NO.4 mirror 8K

standard : ASTM AISI GB DIN JIS EN

certificate : SGS/BV

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5mm – 100mm Duplex 2205 Plate , Duplex Steel Pipe S31803 2B 1D surface

Compared with the ordinary austenitic stainless steel, 2205 steel has lower coefficient of thermal expansion, but higher thermal conductivity

2205 characterize

  • good resistance to stress corrosion cracking.

  • high resistance to general, crevice and pitting corrosion;

  • high resistance to erosion corrosion and corrosion fatigue;

  • high mechanical strength;

  • attractive physical properties;

  • good weldability

2205 specification

1)Thicknesses: 5mm – 100mm
2)Widths: 1.5 metres, 2 metres, 2.5 metres, 3metres
3)Lengths: Up to 12 metres

4)Graade:LDX2101,2304,2205,2507,ETC

2205 application

Pressure vessels, high pressure storage tanks, high pressure piping,

heat exchanger (chemical processing industry), oil and gas pipelines,

heat exchangers, pipes, sewage treatment, pulp and paper industry

classification, bleaching equipment, storage and processing systems,

high-strengthcorrosion under the rotary axes, press rolls, blades, impellers, ship

or truck's cargo box, food processing equipment, marine environmental equipment.

Applications

Pressure vessels, tanks, piping, and heat exchangers in the chemical processing industry
Piping, tubing, and heat exchangers for the handling of gas and oil
Effluent scrubbing systems
Pulp and paper industry digesters, bleaching equipment, and stock-handling systems
Rotors, fans, shafts, and press rolls requiring combined strength and corrosion resistance
Cargo tanks for ships and trucks
Food processing equipment
Biofuels plants


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Standards
ASTM/ASME...........A240 UNS S32205/S31803
EURONORM...........1.4462 X2CrNiMoN 22.5.3
AFNOR...................Z3 CrNi 22.05 AZ
DIN.........................W. Nr 1.4462

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Corrosion Resistance
General Corrosion
Because of its high chromium (22%), molybdenum (3%), and nitrogen (0.18%) contents, the corrosion resistance properties of 2205 are superior to that of 316L or 317L in most environments.

Stress Corrosion Resistance
The duplex microstructure is known to improve the stress corrosion cracking resistance of stainless steels.

Chloride stress corrosion cracking of austenitic stainless steels can occur when the necessary conditions of temperature, tensile stress, oxygen, and chlorides are present. Since these conditions are not easily controlled, stress corrosion cracking has often been a barrier to utilizing 304L, 316L, or 317L.

Corrosion Fatigue Resistence
Alloy 2205 combines high strength and high corrosion resistance to produce high corrosion fatigue strength. Applications in which processing equipment is subject to both an aggresively corrosive enviroment and to cycle loading can benefit from the properties of 2205.

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Chemical Analysis
Typical values (Weight %)

C Cr Ni Mo N Others
0.020 22.1 5.6 3.1 0.18 S=0.001
PREN = [Cr%] = 3.3 [Mo%] = 16 [N%] ≥ 34

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Mechanical Properties
Mechanical Properties at Room Temperature

ASTM A 240 Typical
Yield Strength 0.2%, ksi 65 min. 74
Tensile Strength, ksi 90 min. 105
Elongation % 25 min. 30
Hardness HB 293 max. 256

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Structure
The chemical analysis of 2205 is optimized to obtain a typical 50 a/ 50 g microstructure after solution annealing treatment at 1900/1922F (1040/1080C).

Heat treatments performed above 2000F may result in an increase of ferrite content.

Like all duplex stainless steels, 2205 is susceptible to precipitation of intermetallic phases, usually referred to as sigma phase. Intermetallic phases precipitate in the range of 1300F to 1800F, with the most rapid precipitation occurring at about 1600F. Thus, it is prudent to have 2205 pass a test for the absence of intermetallic phases, such as those in ASTM A 923.

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Processing
Hot Forming
Forming below 600F is recommended whenever possible. When hot forming is required, the workpiece should be heated uniformly and worked in the range of 1750 to 2250F. Alloy 2205 is quite soft at these temperatures and is readily formed. Above this range, 2205 is subject to hot tearing. Immediately below this range, the austenite becomes substantially stronger than the ferrite and may cause cracking, a particular danger to “cold” edges. Below 1700F there can be rapid formation of intermetallic phases because of the combination of temperature and deformation. Whenever hot forming is done, it should be followed by a full solution anneal at 1900F minimum and rapid quench to restore phase balance, toughness, and corrosion resistance. Stress relieving is not required or recommended; however, if it must be performed, the material should receive a full solution anneal at 1900F minimum, followed by rapid cooling or water quenching.

Cold Forming
Alloy 2205 is readily sheared and cold formed on equipment suited to working stainless steels. However, because of the high strength and rapid work hardening of 2205, forces substantially higher than those for austenitic steels are required to cold form 2205. Also because of the high strength, a somewhat larger allowance must be made for springback.

Heat Treatment
Alloy 2205 should be annealed at 1900F minimum, followed by rapid cooling, ideally by water quenching. This treatment applies to both solution annealing and stress relieving. Stress relief treatments at any lower temperature carry the risk of precipitation of detrimental intermetallic or nonmetallic phases.

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Machinability
With high-speed steel tooling, 2205 may be machined at the same feeds and speeds as Alloy 316L. When carbide tooling is used, cutting speeds should be reduced by about 20% relative to the speeds for Alloy 316L. Powerful machines and rigid mounting of tools and parts are essential.

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Welding
Alloy 2205 possesses good weldability. The goal of welding 2205 is that the weld metal and heat-affected zone (HAZ) retain the corrosion resistance, strength, and toughness of the base metal. The welding of 2205 is not difficult, but it is necessary to design welding procedures that lead to a favorable phase balance after welding and will avoid precipitation of detrimental intermetallic or nonmetallic phases.

2205 can be welded by: GTAW (TIG); GMAW (MIG); SMAW ("stick" electrode); SAW; FCW; and PAW.

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5mm – 100mm Duplex 2205 Plate , Duplex Steel Pipe S31803 2B 1D surface

5mm – 100mm Duplex 2205 Plate , Duplex Steel Pipe S31803 2B 1D surface


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