Stainless steel pipe S31803
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S31803 dual phase stainless steel is composed of 21% chromium, 2.5% molybdenum and nickel nitrogen form 4.5% duplex stainless steel alloy. It has high strength, good toughness and good overall and local stress corrosion resistance. The yield strength of S31803 duplex stainless steel is two times that of austenitic stainless steel, this feature enables designers to reduce weight in the design of products, let this alloy has a price advantage than 316317L. This alloy is particularly applicable to -50 degrees F/+600 degrees F temperature range. Beyond this temperature range of applications, also can consider this kind of alloy, but there are some limitations, especially when used in welding structure.
The characteristics of S31803 duplex stainless steel:
1.S31803 dual phase stainless steel and austenitic stainless steel 316L and 317L compared, S31803 properties of dual phase steel in the resistance to pitting and crevice corrosion is more superior, it has very high corrosion resistance of austenite, and compared, its lower thermal expansion coefficient, high thermal conductivity.
2.S31803 dual phase stainless steel and austenitic stainless steel are compared, the compressive strength is two times, compared with 316L and 317L, the designer can reduce the weight. Alloy 2205 is particularly applicable to - 50 degrees F/+600 degrees F temperature range, in a strictly limited circumstances (especially for welding structure), can also be used to lower the temperature.
Chemical composition: C = 0.030, Mn = 2 Si = 1, P = 0.030 S = 0.020 Cr and 22 ~ 23 Ni and 4.5 ~ 6.5 Mo3.0 ~ 3.5 N0.14 ~ 0.20 (austenite and ferrite)
S31803 dual phase stainless steel applications:
Pressure vessels, pressure tanks, high pressure pipe, heat exchanger (chemical processing industry).
Petroleum natural gas pipeline, the heat exchanger tubes.
And the sewage treatment system.
And the pulp and paper industry classifier, bleaching equipment, storage and processing system.
High strength corrosion environment of the rotary shaft, impeller blades, press roller, etc..
Cargo tank, ship or truck
And food processing equipment
S31803 dual phase stainless steel 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
S31803 dual phase stainless steel corrosion resistance:
Uniform corrosion
Because the chromium content (22%), Mo (3%) and nitrogen content (0.18%), 2205 of the properties of corrosion resistance is better than that of 316L and 317L in most environments.
Local corrosion
The content of chromium, molybdenum and nitrogen S31803 duplex stainless steel in the oxidizing and acidic solution, has a strong ability to resist corrosion and crevice corrosion.
Stress corrosion resistance
Dual phase microstructure of stainless steel is helpful to improve the resistance of the stainless steel stress corrosion cracking ability. At a certain temperature, oxygen tension exists, and the absence of chloride, austenitic stainless steel will happen to chloride stress corrosion. Because of these conditions is not easy to control, so the use of 304L, 316L and 317L are limited in this respect.
Corrosion fatigue
High strength and corrosion resistance of S31803 duplex stainless steel which has high resistance to corrosion fatigue strength. Processing equipment susceptible to corrosion environment and cyclic loading, the characteristics of S31803 duplex stainless steel is very suitable for such applications.
Structure
Chemical composition of S31803 duplex stainless steel after 1900 degrees /1922 degrees F (1040 degrees /1080 degrees C) solution annealed microstructure can obtain ideal 50 alpha / 50 gamma. If the heat treatment temperatures above 2000 degrees F, may lead to an increase in the ferrite components. Like other dual phase stainless steel, alloy 2205 is easily affected by the intermetallic phase precipitation. Intermetallic phases at 1300 DEG F and 1800 DEG between F at 1600 DEG F precipitation, temperature, the precipitation of the fastest. Therefore, we need to conduct experiments on the S31803 duplex stainless steel, to ensure that no intermetallic phase, testing, reference ASTM A 923.
S31803 dual phase stainless steel processing
Hot forming
We suggest that should be carried out in the following 600 degrees F temperature forming. In hot forming processing, the workpiece should be heated, should be in 1750 degrees F to 2250 degrees F within the temperature range of 2205 alloy under this temperature, very soft. If the temperature is too high, easy to hot tearing 2205 alloy. Below this temperature, the austenite will be broken. Below 1700 degrees F, because of the influence of temperature and deformation, intermetallic will soon form. After hot forming, should be an immediate solution annealed to at least 1900 degrees F temperature, and quenching to restore its phase equilibrium, toughness and corrosion resistance. We do not recommend eliminating stress, but if you must do so, materials to be solution annealed at a minimum of 1900 degrees F temperatures, then rapidly cooling, water quenching.
Cold forming
S31803 dual phase stainless steel can be cut and cold forming. However, due to the high strength and hardness of 2205 alloy itself, it than austenitic steel is more need for cold forming, also because of its high strength, should give full consideration to the factors of springback.
- Q: Can stainless steel pipes be used for fire sprinkler systems?
- Yes, stainless steel pipes can be used for fire sprinkler systems. Stainless steel is a highly durable and corrosion-resistant material, making it suitable for use in fire protection systems. It can withstand high temperatures and pressure, ensuring the reliability and longevity of the sprinkler system. Additionally, stainless steel pipes have a low thermal expansion coefficient, which reduces the risk of leaks or bursts due to temperature changes. These properties make stainless steel pipes a preferred choice for fire sprinkler systems in both commercial and residential buildings.
- Q: Can stainless steel pipes be used for sewage applications?
- Indeed, sewage applications can utilize stainless steel pipes. Stainless steel, being an extremely robust and corrosion-resistant material, proves to be an impeccable selection for managing sewage and wastewater. It exhibits resistance against chemicals and other harsh elements frequently encountered in sewage systems, guaranteeing enduring performance and minimal upkeep. Moreover, the smooth interior surfaces of stainless steel pipes diminish the chances of congestion or blockages caused by debris or accumulation. All in all, stainless steel pipes present themselves as a dependable and sanitary choice for sewage applications.
- Q: Can stainless steel pipes be used for chemical processing?
- Indeed, chemical processing can indeed utilize stainless steel pipes. One must acknowledge stainless steel's remarkable ability to resist corrosion, rendering it an apt material for handling a diverse range of chemicals. It effectively wards off both organic and inorganic substances, including acids, bases, and salts. Moreover, stainless steel pipes exhibit commendable strength, durability, and resistance to extreme temperatures, enabling them to endure the often severe conditions prevalent in chemical processing. In addition, their ease of maintenance and cleaning renders them a favored choice within the industry. Nevertheless, it remains crucial to carefully consider the specific requirements of the chemicals involved and seek counsel from experts to select the most suitable grade of stainless steel, ensuring optimal performance and safety.
- Q: Advantages and disadvantages of PPR lined stainless steel pipe and PPR aluminium plastic pipe
- PP-R aluminium plastic steady tubePP-R aluminium plastic steady tube is a composite pipe made of PP-R tube and aluminum layer. It is based on maintaining the original PP-R tube size unchanged, using hot melt adhesive technology on the outer surface and the thickness of 0.15-0.25mm aluminum strip under high temperature organic adhesive, then coated with 0.2mm around the PP-R (or PE) protective layer produced. It has five layers of polypropylene, aluminum, gum and polypropylene. Its intermediate aluminum layer acts as a strengthening agent to combine PP-R plastic with metal. It also has flexibility of plastic pipe and rigidity of metal tube. Through the integration of aluminum layer to achieve stable mechanical properties, with higher strength and better resistance to high temperature.Advantage：PP-R steady-state aluminum plastic pipe into the PP-R tube and the metal tube in one of the advantages, at the same time with PP-R tube health and sealing and metal pipe rigidity, forming a unique superior general plastic pipe has special properties, linear expansion coefficient, impervious to physical properties of oxygen, anti UV, high strength, high temperature resistance so excellent.
- Q: Are stainless steel pipes resistant to chlorine corrosion?
- Stainless steel pipes have a general resistance against chlorine corrosion. The corrosion resistance of stainless steel is widely acknowledged, especially when it comes to chlorine and chlorinated water. This is because stainless steel contains high levels of chromium, which generates a protective oxide layer on the metal's surface. This layer acts as a barrier, shielding the stainless steel from the corrosive effects of chlorine. Nonetheless, it is crucial to consider that the degree of resistance to chlorine corrosion can vary based on the specific grade of stainless steel employed. Thus, it is vital to carefully choose the appropriate stainless steel grade that is specifically designed to withstand chlorine corrosion when utilizing stainless steel pipes in applications involving chlorinated water or chlorine-rich environments.
- Q: Can stainless steel pipes handle acidic or alkaline fluids?
- Stainless steel pipes possess the ability to accommodate both acidic and alkaline fluids. Their exceptional corrosion resistance, a renowned attribute of stainless steel, renders them highly suitable for managing aggressive substances. This notable quality stems from the presence of chromium, which interacts with oxygen and generates a thin protective layer on the steel's surface, effectively halting further corrosion. This passive layer remains steadfast in both acidic and alkaline environments, furnishing long-lasting protection against corrosive fluids. However, the level of corrosion resistance may fluctuate depending on the specific stainless steel grade employed, as well as the fluid's concentration and temperature during transport. Consequently, it becomes crucial to meticulously select the appropriate stainless steel grade and duly consider factors like temperature, concentration, and potential exposure to other corrosive substances when opting for stainless steel pipes for the handling of acidic or alkaline fluids.
- Q: Can stainless steel pipes be used for sewage disposal?
- Indeed, sewage disposal can be accomplished using stainless steel pipes. Due to its exceptional durability and corrosion resistance, stainless steel proves to be an ideal material for the handling of sewage and wastewater. It effectively withstands the presence of numerous chemicals and acids commonly encountered in sewage, guaranteeing the pipes' extended lifespan while minimizing the likelihood of leaks or fractures. Moreover, the smooth inner surfaces of stainless steel pipes play a pivotal role in deterring waste buildup and impeding the growth of harmful bacteria or substances. All in all, stainless steel pipes emerge as a dependable and suitable option for sewage disposal systems.
- Q: Water and electricity thin wall stainless steel tube 304 material delta 2 what does that mean?
- 304 is a stainless steel number, 2.9 refers to the pipe wall thickness.
- Q: How do stainless steel pipes compare to PEX pipes?
- Stainless steel pipes and PEX pipes have different characteristics and applications, which make them suitable for different plumbing systems. Stainless steel pipes are known for their durability and strength. They are highly resistant to corrosion, which makes them ideal for use in water supply systems, especially in areas with aggressive water conditions. Stainless steel pipes can withstand high pressure and temperature, making them suitable for both residential and commercial applications. They are also fire-resistant, which adds to their safety profile. Additionally, stainless steel pipes have a long lifespan and require minimal maintenance, making them a cost-effective option in the long run. On the other hand, PEX pipes are made of cross-linked polyethylene, which offers flexibility and ease of installation. PEX pipes are highly resistant to freezing and bursting, making them suitable for cold-climate regions. They have the ability to expand and contract, which reduces the risk of leaks or bursts due to temperature changes. PEX pipes are also corrosion-resistant, eliminating the need for expensive and time-consuming maintenance. Additionally, PEX pipes are quieter compared to metal pipes, as they dampen noise and vibration. When choosing between stainless steel pipes and PEX pipes, it is essential to consider factors such as the specific plumbing requirements, budget, and local building codes. While stainless steel pipes excel in durability and strength, PEX pipes offer flexibility and ease of installation. Ultimately, the choice between the two will depend on the specific needs of the plumbing system and the preferences of the homeowner or plumbing professional.
- Q: How do stainless steel pipes compare to plastic pipes?
- Stainless steel pipes are generally considered superior to plastic pipes in terms of durability, strength, and resistance to corrosion. They have a longer lifespan, can withstand high temperatures and pressures, and are more suitable for industrial and heavy-duty applications. Additionally, stainless steel pipes are environmentally friendly as they are recyclable and do not release harmful toxins. However, plastic pipes are often more cost-effective, easier to install, and can be used in various household applications.
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Stainless steel pipe S31803
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- 200000 kg/month
OKorder Service Pledge
OKorder Financial Service
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