Product describtion:
The yield strength of 2205 duplex stainless steel is more than double that of ordinary austenitic stainless steel. This feature allows designers to reduce weight when designing products, making this alloy more competitive than 316,317L. This alloy is especially suitable for use in the temperature range of -50°F / +600°F. Alloys that are outside this temperature range can also be considered for this alloy, but with some limitations, especially when applied to welded structures.
Application field editing:
· Pressure vessels, high pressure storage tanks, high pressure piping, heat exchangers (chemical processing industry).
· Oil and gas pipelines, heat exchanger fittings.
· Sewage treatment system.
· Pulp and paper industry classifiers, bleaching equipment, storage handling systems.
· Rotary shafts, press rolls, blades, impellers, etc. in high-strength, corrosion-resistant environments.
· Cargo box for ships or trucks
· Food processing equipment
Standard:
ASTM/ASME...........A240 UNS S32205/S31803
EURONORM...........1.4462 X2CrNiMoN 22.5.3
AFNOR........................Z3 CrNi 22.05 AZ
DIN.........................W. Nr 1.4462
Corrosion resistance:
Uniform corrosion
Due to chromium content (22%), molybdenum (3%) and nitrogen content (0.18%), the corrosion resistance of 2205 is superior to 316L and 317L in most environments.
Local corrosion resistance
The content of chromium, molybdenum and nitrogen in 2205 duplex stainless steel makes it highly resistant to pitting corrosion and crevice corrosion in oxidizing and acidic solutions.
Stress corrosion resistance
The two-phase microstructure of stainless steel helps to improve the resistance to stress corrosion cracking of stainless steel. Chloride stress corrosion occurs in austenitic stainless steels in the presence of certain temperatures, tensions, oxygen and chlorides. Since these conditions are not easily controlled, the use of 304L, 316L and 317L is limited in this respect.
Corrosion resistance
The high strength and corrosion resistance of 2205 duplex steels provide high corrosion fatigue strength. Processing equipment is susceptible to corrosive environments and loading cycles, and the 2205's features are ideal for such applications.
▶ CHEMICAL COMPSOSITION
chemical composition | 2205 |
C | ≤0.03 |
N | 0.18% |
P | |
Mn | |
Si | |
Cr | 22% |
Ni | 3% |
ASTM A688 | water heater with austenitic stainless steel welded pipe |
ASTM A803 | water heater in ferritic stainless steel welded pipe |
ASTM A790 | ferritic austenitic stainless steel seamless pipe and welded pipe |
ASTM A651 | water use stainless steel tube |
ASTM A249 | boiler super-heater, heat ex-changer and condenser with austenitic steel welded steel pipe |
ASTM A312 | austenitic stainless steel seamless pipe and welded pipe |
ASTM A268 | general seamless and welded ferritic and martensitic stainless steel pipe |
ASTM A269 | general requirements for general purpose austenitic alloy steel pipe |
ASTM A1016 | ferritic steel and austenitic steel pipe general requirements |
ASTM E92 | vickers harness test method of metal material |
ASTM E309 | tubular steel magnetic saturation eddy current inspection of practical discipline |
ASTM A763 | ferritic stainless steel inter-granular corrosion sensitivity of the method |
ASTM G48 | ferric chloride solution is used to test the pitting corrosion and crevice corrosion resistant alloy and stainless steel standard test methods |
GB/T 30065-2013 | water heater with ferritic stainless steel welded steel pipe |
GB/T 30066-2013 | heater ex-changer and condenser with ferritic stainless steel welded steel pip |
GB/T 21832-2008 | austenitic, ferritic duplex stainless steel welded tube |
GB/T 2771-2008 | fluid conveying by stainless steel welded pipe |
GB/T 24593-2009 | austenitic stainless steel welded tubes for heat exchanger |
GB/T 228 | metal material tensile test at room temperature |
GB/T 232 | Metal material bending test method of GB/T 232 |
GB/T 241 | metal pipe hydraulic test method |
GB/T 242 | metal tube flaring test method |
GB/T 245 | metal edge test method |
GB/T 246 | metal tube flattening test method |
GB/T 2102 | steel pipe acceptance, packing, mark and quality certificate |
GB/T 4334.5 | sulfuric acid stainless steel - copper sulfate corrosion test method |
GB/T 6394 | metal average grain size determination method |
GB/T 7735 | steel tube eddy current testing method |
GB/T 30065-2013 | water heater with ferritic stainless steel welded steel pipe |
GB/T 30066-2013 | heater ex-changer and condenser with ferritic stainless steel welded steel pip |
JIS G3463-2006 | stainless steel pipe for boiler heat ex-changer |
Duplex Stainless Steel (DSS) refers to approximately 50% of ferrite and austenite, and generally contains less than 30% of stainless steel.
In the case where the C content is low, the Cr content is 18% to 28%, and the Ni content is 3% to 10%.
Some steels also contain alloying elements such as Mo, Cu, Nb, Ti, and N.
This type of steel combines the characteristics of austenitic and ferritic stainless steels. Compared with ferrite, it has higher plasticity and toughness, no brittleness at room temperature,
significantly improved resistance to intergranular corrosion and welding performance, and at the same time retains iron. The 475°C brittleness
and high thermal conductivity of the ferritic stainless steel make it superplastic.
Compared with austenitic stainless steels, the strength and resistance to intergranular corrosion and chloride stress corrosion resistance are significantly improved.
Duplex stainless steel has excellent pitting corrosion resistance and is also a nickel-stainless steel.
such as adding S, Ca, Se, Te and other elements. It has good cutting ability.
▶ PACKAGGING & DELIVERY
● Be wrapped with polyvinyl chloride film
● Stick label on the both end
Each Piece in polybag and several pieces per bundle,or according to customer's request
● Delivery time:25-30 days after receiving deposit
● Shipping details: Generally,the delivery time is 3-10 days for the sample ,about 25-35 for mass production
▶ PAYMENT TERM
● We can also provide different payment terms (L / C, T / T, CIF,PayPal, Western Union)
● Finished project case:
Oil and gas system Storage Tank Desalination equipment
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