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 underground sewage systems?
- Yes, stainless steel pipes can be used for underground sewage systems. Stainless steel is a highly durable and corrosion-resistant material, making it suitable for use in underground applications where exposure to moisture and chemicals is common. It can withstand the harsh conditions of sewage systems, including the corrosive nature of wastewater and the pressure from the soil. Additionally, stainless steel pipes have a long lifespan, reducing the need for frequent replacements and maintenance. However, it is important to consider the specific requirements and regulations of the local sewage system and consult with professionals to ensure proper installation and compatibility with other system components.
- Q:What's the difference between stainless steel decorative pipes and polished stainless steel pipes?
- Stainless steel decorative tubes are mainly used for decoration, such as railings, staircases, hand guards, railings, windows and so on, the wall thickness is very thin,Polished stainless steel pipe is not the same, the industry can also be used, that is, just made out, some rough, not smooth, so polished under the smooth, according to customer needs.
- Q:What is the yield strength of stainless steel pipes?
- The yield strength of stainless steel pipes is subject to variation based on the specific grade and composition of the stainless steel. Nevertheless, the range of yield strengths for stainless steel pipes typically falls between 30,000 and 100,000 pounds per square inch (psi). It is worth emphasizing that the yield strength signifies the juncture at which the material undergoes permanent deformation due to applied stress. Hence, selecting the suitable grade and thickness of stainless steel pipe is of utmost importance, considering the intended application and the particular mechanical properties deemed necessary.
- Q:How do stainless steel pipes compare to aluminum pipes?
- Stainless steel pipes and aluminum pipes have their own unique properties and advantages, making them suitable for different applications. One major difference between stainless steel pipes and aluminum pipes is their corrosion resistance. Stainless steel pipes are known for their exceptional corrosion resistance, which makes them ideal for applications where the pipes come into contact with corrosive substances such as chemicals or saltwater. On the other hand, aluminum pipes are not as resistant to corrosion as stainless steel and are more prone to oxidation. However, aluminum pipes can be made more corrosion-resistant through various coatings or treatments. Another important factor to consider is the strength and durability of the pipes. Stainless steel pipes are generally stronger and more durable than aluminum pipes. They can withstand higher pressure and temperature, making them suitable for high-stress applications such as industrial piping systems or transportation of fluids and gases. Aluminum pipes, although less strong than stainless steel, are lightweight and offer good strength-to-weight ratios, making them suitable for applications where weight is a concern, such as aerospace or automotive industries. Cost is another aspect to compare. Stainless steel pipes are usually more expensive than aluminum pipes due to the higher cost of raw materials and manufacturing processes. However, stainless steel pipes have a longer lifespan and require less maintenance, which can offset the initial higher cost in the long run. Aluminum pipes are generally more affordable, but they may require more frequent maintenance and replacement due to their lower resistance to corrosion and wear. In terms of appearance, stainless steel pipes have a sleek and polished look, while aluminum pipes can be either anodized or painted to achieve different finishes. The choice between the two would depend on the aesthetic preferences of the specific application. In summary, stainless steel pipes offer superior corrosion resistance, strength, and durability, making them suitable for demanding applications. Aluminum pipes, on the other hand, are lightweight and cost-effective, making them a preferred choice in industries where weight is a concern. Ultimately, the choice between stainless steel pipes and aluminum pipes depends on the specific requirements of the application, taking into account factors such as corrosion resistance, strength, cost, and aesthetics.
- Q:Can stainless steel pipes be insulated with polyphenylene sulfide?
- Stainless steel pipes, indeed, have the capability to be insulated using polyphenylene sulfide (PPS). PPS, a thermoplastic with remarkable properties of thermal and chemical resistance, can be employed as an insulator in a multitude of applications, such as pipes and tubing. By applying PPS as insulation to stainless steel pipes, the transfer of heat can be minimized and condensation can be effectively prevented. Moreover, PPS exhibits resistance to various chemicals, rendering it apt for utilization in environments prone to corrosion.
- Q:What are the connecting methods of stainless steel pipes for indoor water pipes?
- Card convex features: easy installation, the connection is not deformed inside and outside, belong to live connection, easy maintenance. Scope of application: cold water system, pipe direct drinking water system, water treatment equipment system. The installation is more suitable, mainly taking into account the replacement of the sealing ring later, the hot water system should be avoided as far as possible. The advantage of the connection is that the installation is simple, convenient and easy to maintain, and the sealing ring in the pipe needs replacing when aging, and the utility model is relatively simple and convenient, and the nut can be replaced as long as the nut is unscrewed. The disadvantage is that the applicable situation is single, in the hot water system sealing ring aging is more prominent, higher cost. Concealed piping and hot water systems are generally not recommended.
- Q:Can stainless steel pipes be used for ornamental purposes?
- Stainless steel pipes possess the ability to serve ornamental functions. With its adaptability and contemporary allure, stainless steel emerges as the ideal material for embellishing purposes. Its resistance to corrosion and durability render it an exceptional choice for outdoor installations or environments with high humidity, where alternative metals may deteriorate over time. Stainless steel pipes can be shaped and sized in a multitude of ways, enabling the creation of imaginative and aesthetically pleasing designs. They find common application in architectural structures, such as railings, handrails, and balustrades, as well as decorative furniture, lighting fixtures, and artwork. Moreover, stainless steel pipes can be polished or finished in diverse manners to accentuate their appearance and achieve desired decorative effects. All in all, stainless steel pipes deliver a resilient and visually captivating solution for ornamental purposes.
- Q:Can stainless steel pipes be insulated with polyethylene terephthalate?
- Indeed, it is possible to insulate stainless steel pipes with polyethylene terephthalate (PET). PET is widely employed as an insulating substance owing to its low thermal conductivity, elevated melting point, and commendable resistance against moisture, chemicals, and UV radiation. It can be administered as a safeguarding layer or encircling the stainless steel pipes in order to avert heat loss or gain. The installation of PET insulation is straightforward and it proves highly efficient in minimizing energy transfer, thus rendering it appropriate for a multitude of applications in industries like HVAC, plumbing, and oil and gas.
- Q:What is the average cost of stainless steel pipes?
- The cost of stainless steel pipes can differ based on several factors, including pipe size, grade, thickness, supplier, and location. Generally, stainless steel pipes may cost anywhere between $5 and $50 per foot. Nevertheless, it is crucial to acknowledge that prices may vary due to market conditions and other influences. To obtain a more precise estimate for the required stainless steel pipes' specific type and quantity, it is advisable to conduct thorough research and compare prices from various suppliers.
- Q:Are stainless steel pipes magnetic?
- No, stainless steel pipes are generally not magnetic.
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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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