Categories | Duplex Stainless Steel Flange |
---|---|
Brand Name: | HT |
Model Number: | 2205 SO flange |
Certification: | ISO9001 |
Place of Origin: | China |
MOQ: | 1 piece |
Price: | USD 100-100/piece |
Payment Terms: | Western Union, L/C, T/T |
Supply Ability: | 10000 pcs/quarter |
Delivery Time: | 30 days |
Packaging Details: | wooden case or wooden pallet |
Type1: | 2205 WN flange |
Type2: | 2205 blind flange |
Type3: | 2205 SW flange |
Type4: | 2205 SO flange |
Type5: | 2205 plate flange |
ASTM A 182, A 240, A 276,
A 789, A 790, A 815
UNS S31803, S32205
NACE MR0175
Forms of Duplex 2205 Available?
• Sheet
• Plate
• Bar
• Pipe & Tube (welded & seamless)
• Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints,
long welding necks, socket welds, elbows, tees, stub-ends, returns,
caps, crosses, reducers, and pipe nipples)
• Welding Wire and Welding Electrode
2205 Duplex Overview
Duplex 2205 is a nitrogen enhanced duplex stainless steel that was
developed to combat common corrosion problems encountered with the
300 series stainless steels. “Duplex” describes a family of
stainless steels that are neither fully austenitic, like 304
stainless, nor purely ferritic, like 430 stainless. The structure
of 2205 duplex stainless steel consists of austenite pools
surrounded by a continuous ferrite phase. In the annealed
condition, 2205 contains approximately 40-50% ferrite. Often
referred to as the work horse grade, 2205 is the most widely used
grade in the duplex family of stainless steels.
The advantage of a duplex structure is that it combines the
favorable qualities of a ferritic alloy (stress corrosion cracking
resistance and high strength) with those of an austenitic alloy
(ease of fabrication and corrosion resistance).
Usage of 2205 Duplex stainless steel should be limited to
temperatures below 600° F. Extended elevated temperature exposure
can embrittle 2205 stainless.
Corrosion Resistance
2205 duplex stainless steel is a cost effective solution for many
applications where the 300 series stainless steels are susceptible
to chloride stress corrosion cracking. Stress corrosion cracking
occurs when stainless steels are subjected to tensile stress, while
in contact with solutions containing chlorides. Increasing
temperatures also increase the susceptibility of stainless steels
to stress corrosion cracking.
The combination of chromium, molybdenum and nitrogen convey the
good resistance of 2205 to chloride pitting and crevice corrosion.
This resistance is extremely important for services such as marine
environments, brackish water, bleaching operations, closed loop
water systems and some food processing applications. The high
chromium, molybdenum and nitrogen contents of 2205 provide
corrosion resistance superior to common stainless steels, such as,
316L and 317L in most environments.
Cr | Ni | Mo | C | N |
22.0-23.0 | 4.50-6.50 | 3.00-3.50 | .030 Max | 0.14-0.20 |
Mn | Si | P | S | Fe |
2.00 Max | 1.00 Max | .030 Max | .020 Max | Balance |
What are the characteristics of Duplex 2205?
• High resistance to chloride stress corrosion cracking
• Resistance to chloride pitting and crevice corrosion
• Good general corrosion resistance
• Good sulfide stress corrosion resistance
• High Strength
• Good weldability and workability
In what applications is Duplex 2205 used?
• Chemical process vessels, piping and heat exchangers
• Pulp mill digesters, bleach washers, chip pre-steaming vessels
• Food processing equipment
• Oil field piping and heat exchangers
• Flue gas desulfurization equipment
Pipe Smls | Pipe Welded | Tube Smls | Tube Welded | Sheet/Plate | Bar | Flanges, Fittings & Valves |
A790 | A790 | A789 | A789 | A240 | A276 | A182 |
Ultimate Tensile Strength, ksi Minimum | .2% Yield Strength, ksi Minimum | Hardness Max. |
95 | 65 | 31 Rockwell C |
We can provide 2205 material in the form of flange, fittings,
pipes, steel plate sheet
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