Black Stainless Steel Pipes S31803
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- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
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- Supply Capability:
- 200000 kg/month
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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:Are stainless steel pipes suitable for high-pressure applications?
- Yes, stainless steel pipes are suitable for high-pressure applications. Stainless steel is known for its excellent strength and corrosion resistance, making it an ideal material for handling high-pressure fluids or gases. It can withstand high pressures without deforming or leaking, ensuring the safety and reliability of the system. Additionally, stainless steel pipes have a smooth internal surface that minimizes flow resistance and prevents the accumulation of debris or contaminants, further enhancing their suitability for high-pressure applications.
- Q:How do stainless steel pipes compare to fiberglass pipes?
- Stainless steel pipes and fiberglass pipes have distinct characteristics and advantages that set them apart. When comparing stainless steel pipes to fiberglass pipes, several factors should be considered, including strength, durability, corrosion resistance, cost, and ease of installation. In terms of strength, stainless steel pipes have a clear advantage. They are known for their exceptional strength and durability, making them ideal for withstanding high-pressure applications and heavy loads. On the other hand, fiberglass pipes are relatively weaker and may not be suitable for applications that require high strength and resistance. Durability is another crucial aspect to consider. Stainless steel pipes are highly durable and can withstand extreme temperatures, chemicals, and physical stress without deteriorating. Fiberglass pipes, although durable, are more susceptible to damage from impact, extreme temperatures, and UV radiation. This makes stainless steel pipes a more reliable choice for long-term use in harsh environments. Corrosion resistance is a significant factor in pipe selection. Stainless steel pipes are renowned for their excellent corrosion resistance, making them ideal for applications where exposure to corrosive substances is a concern. Fiberglass pipes, while relatively resistant to many chemicals, can be affected by certain corrosive substances and may require additional protective coatings. Cost is an important consideration for any project. Stainless steel pipes tend to be more expensive than fiberglass pipes due to the higher cost of raw materials and manufacturing processes. Fiberglass pipes, on the other hand, are generally more affordable, making them a cost-effective option for projects with budget constraints. Finally, ease of installation is worth mentioning. Stainless steel pipes require specialized tools and expertise for installation due to their weight and rigidity. Fiberglass pipes, being lightweight and flexible, are easier to handle and install, reducing labor costs and time. In conclusion, stainless steel pipes offer superior strength, durability, and corrosion resistance compared to fiberglass pipes. However, fiberglass pipes are a more cost-effective option and easier to install. The choice between the two ultimately depends on the specific requirements of the project, considering factors such as the application, budget, and environmental conditions.
- Q:What are the different grades of stainless steel used in pipes?
- Pipes commonly utilize various grades of stainless steel, each possessing distinct properties and characteristics. Notable grades include: 1. Stainless Steel Grade 304: Recognized as highly versatile and widely employed, Grade 304 exhibits non-magnetic qualities, exceptional resistance to corrosion, and ease of weldability. Its applications predominantly revolve around sectors emphasizing hygiene and cleanliness, such as food processing plants, hospitals, and the pharmaceutical industry. 2. Stainless Steel Grade 316: Renowned for its unparalleled resistance to corrosion, particularly in environments abundant in chloride or saltwater exposure, Grade 316 frequently finds utilization in marine settings, chemical processing facilities, and coastal areas necessitating robust corrosion resistance. 3. Stainless Steel Grade 321: Grade 321 boasts titanium stabilization, rendering it more impervious to sensitization and intergranular corrosion at elevated temperatures. It commonly serves in high-temperature scenarios, exemplified by exhaust systems, furnaces, and heat exchangers. 4. Stainless Steel Grade 409: Designed specifically for high-temperature applications like automotive exhaust systems, Grade 409 showcases remarkable heat resistance and exhibits low thermal expansion properties, making it an ideal choice for enduring extreme temperatures. 5. Stainless Steel Grade 904L: Grade 904L excels in corrosion resistance, particularly combating pitting and crevice corrosion. Frequently employed in aggressive environments prevalent in chemical processing plants, offshore oil and gas platforms, and pulp and paper industries. These examples merely exemplify the array of stainless steel grades employed in pipe manufacturing. The selection of a particular grade hinges upon the specific application and desired attributes, encompassing corrosion resistance, temperature resistance, and mechanical strength.
- Q:Can stainless steel pipes be used for refrigeration systems?
- Yes, stainless steel pipes can be used for refrigeration systems. Stainless steel is a highly durable material that provides excellent resistance to corrosion, making it ideal for use in refrigeration systems where moisture and low temperatures are present. Stainless steel pipes also have high thermal conductivity, allowing for efficient and effective heat transfer within the system. Additionally, stainless steel pipes are easy to clean, maintain, and can withstand high pressure, making them suitable for use in refrigeration systems that require reliable and long-lasting performance.
- Q:Are stainless steel pipes suitable for oil and gas applications?
- Yes, stainless steel pipes are suitable for oil and gas applications. Stainless steel is highly resistant to corrosion, making it ideal for transporting and storing oil and gas, which often contain corrosive elements. Stainless steel pipes also have high strength and durability, ensuring they can withstand high-pressure conditions and harsh environments. Additionally, stainless steel is easy to clean and maintain, reducing the risk of contamination in oil and gas operations. Overall, stainless steel pipes are a reliable and cost-effective choice for oil and gas applications.
- Q:Can stainless steel pipes be used in marine environments?
- Yes, stainless steel pipes can be used in marine environments. Stainless steel is highly resistant to corrosion and rust, making it an ideal material for marine applications. It can withstand the harsh conditions of saltwater, such as high levels of humidity, moisture, and exposure to various chemicals. Stainless steel pipes are commonly used in marine vessels, offshore platforms, and other marine structures due to their durability and long-lasting performance. They provide excellent strength and reliability, even in challenging environments, making them a preferred choice for marine applications.
- Q:Are stainless steel pipes suitable for brewery applications?
- Yes, stainless steel pipes are highly suitable for brewery applications. Stainless steel is a preferred material in the brewing industry due to its excellent corrosion resistance, durability, and hygienic properties. These pipes can withstand the harsh conditions of a brewery environment, including exposure to hot liquids and cleaning chemicals, without corroding or contaminating the beer. Stainless steel pipes also have a smooth surface, which helps prevent the buildup of bacteria and other contaminants, ensuring a high level of cleanliness and quality in the brewing process. Additionally, stainless steel is easy to clean and maintain, making it a practical choice for breweries. Overall, stainless steel pipes are a reliable and efficient option for brewery applications.
- Q:How do you prevent scaling in stainless steel pipes?
- One way to prevent scaling in stainless steel pipes is by using a process called passivation. Passivation involves treating the stainless steel surface with a mild oxidant or acid solution to remove any contaminants and create a protective oxide layer. Regular cleaning and maintenance, avoiding prolonged exposure to high temperatures, and controlling the water chemistry are also effective measures to prevent scaling in stainless steel pipes.
- Q:Are stainless steel pipes suitable for breweries?
- Yes, stainless steel pipes are highly suitable for breweries. Stainless steel is a preferred material for brewing applications due to its numerous beneficial properties. Firstly, stainless steel pipes are corrosion-resistant, which is crucial in a brewery environment where they come into contact with liquids containing acids and other corrosive substances. This ensures that the pipes will not rust or contaminate the beer with unwanted particles. Additionally, stainless steel pipes are highly hygienic. They are easy to clean and sanitize, which is essential in maintaining a high standard of cleanliness and preventing the growth of bacteria or other microorganisms that could spoil the beer. The smooth surface of stainless steel pipes also prevents the accumulation of residue or impurities, further enhancing the cleanliness of the brewing process. Furthermore, stainless steel pipes have excellent temperature resistance. They can withstand the high temperatures required for various brewing processes, such as boiling or sterilization, without deforming or losing their properties. This durability and heat resistance make stainless steel pipes reliable and long-lasting, ensuring their suitability for breweries. Overall, stainless steel pipes offer a combination of corrosion resistance, hygienic properties, and temperature resistance that make them an ideal choice for breweries. They contribute to the production of high-quality and safe beer, providing a reliable and efficient infrastructure for the brewing process.
- Q:What is the difference between double random length and single random length stainless steel pipes?
- The main difference between double random length and single random length stainless steel pipes lies in their lengths. Double random length pipes have two random lengths within a specific range, while single random length pipes have only one random length within the same range.
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Black Stainless Steel Pipes 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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