321 Stainless Steel Coil Suppliers
- Thickness: 0.2mm – 200mm
- Width: 300mm – 2000mm, the narrowed products pls check in strip products
- Length: 500mm-12000mm
- Finish: 2B, 2D, Black, NO.1, Anneal pickling
- MOQ: 2MT
Product Description of 321 Stainless Steel Coils
321 stainless steel coils are a kind of stainless steel coils based on 304 stainless steel coils improved with good corrosion resistance and high-temperature strength. 321 stainless steel coils with the addition of titanium elements, can effectively enhance the high-temperature resistance of stainless steel coils so that it can still maintain stable performance in the high-temperature environment of about 800 ℃.
321 stainless steel coils are a kind of stainless steel coils with good weldability, corrosion resistance, and high-temperature resistance, widely used in chemical, petroleum, pharmaceutical, food processing, aerospace, and other fields. It can manufacture equipment such as pipes, heat exchangers, turbine blades, combustion chambers, and catalytic converters at high temperatures.
Huaxiao, as professional stainless steel coil suppliers, offers 321 stainless steel coils in various specifications and sizes, which can be cut and custom processed according to customers’ requirements. Our 321 stainless steel coils are of high quality, reliability, and stability, and undergo strict quality control and testing to ensure compliance with international standards and customer requirements.
Product Range of 321 Stainless Steel Coils
-321 Cold Rolled Stainless Steel Coils, Cold Rolled 321 Coils, 321 CRC.
- · Thickness: 0.2mm – 8.0mm
- · Width: 600mm – 2000mm, For the narrowed products please check-in strip products
- · Max Coil Weight: 25MT
- · Coil ID: 508mm, 610mm
- · Finish: 2B
-321 Hot Rolled Stainless Steel Coils, Hot Rolled 321 Coils, 321 HRC.
- · Thickness: 1.2mm – 16mm
- · Width: 600mm – 2000mm, for the narrower products please check in strip products
- · Max Coil Weight: 40MT
- · Coil ID: 508mm, 610mm
- · Finish: NO.1
Specification of 321 Stainless Steel Coils
Chemical Composition of 321 Stainless Steel Coils
| 321 | C % | Si % | Mn % | P% | S% | Cr% | Ni% | Ti% | Nb |
| ASTM | 0.08 | ≤ 1.0 | ≤2 | ≤0.45 | ≤0.03 | 17-19 | 9-12 | 0.4-0.70 | 8C-12C |
| JIS | 0.08 | ≤ 1.0 | ≤2 | ≤0.45 | ≤0.03 | 17-19 | 9-12 | — | — |
| EN | 0.08 | ≤ 1.0 | ≤2 | ≤0.45 | ≤0.03 | 17-19 | 9-12 | — | — |
| GB | 0.08 | ≤ 1.0 | ≤2 | ≤0.35 | ≤0.03 | 17-19 | 9-12 | — | — |
Physical Property of 321 Stainless Steel Coils
| 321 | Density (g/cm³) | Melting point (℃) | Thermal conductivity (W/m-K) | Coefficient of thermal expansion (10^-6/K) |
| ASTM | 7.93 | 1398-1446 | 14.6 | 16.6 |
| JIS | 7.93 | 1398-1446 | 16.3 | 17 |
| EN | 7.93 | 1398-1446 | 16.3 | 16.5 |
| GB | 7.93 | 1398-1446 | 16.3 | 16.5 |
Mechanical Property of 321 Stainless Steel Coils
| 321 | T.S.(MPa） | Y.S.(MPa） | EL.(%) | HB | HRB | HBW | HV |
| ASTM | ≥ 515 | ≥ 205 | ≥ 40 | ≤ 217 | ≤ 95 | ≤ 223 | ≤ 200 |
| JIS | ≥ 520 | ≥ 205 | ≥ 40 | ≤ 187 | ≤ 90 | — | — |
| EN | ≥ 500 | ≥ 200 | ≥ 40 | — | — | — | — |
| GB | ≥ 520 | ≥ 205 | ≥ 40 | ≤ 187 | ≤ 90 | ≤ 200 | — |
Production Process of 321 Stainless Steel Coils
Raw Material Preparation
First of all, stainless steel coil suppliers need to prepare raw materials which should meet national standards and customer requirements.
Cutting
The raw materials will be cut according to the size required by the customer, and the cutting can be done by shearing flame cutting, or laser cutting.
Passivation
Passivation is to protect the chemical properties of the stainless steel material surface to prevent corrosion and oxidation and improve the corrosion resistance of stainless steel. The passivation process usually uses pickling or electrolytic passivation, etc.
Coiling
The steel plate or strip with good edges will be rolled into stainless steel coils through the coiling equipment. Coiling needs to control parameters such as curl radius and coil width to meet customers’ requirements.
Edge making
Edge making is to process the cut steel plate or strip to make its edge smooth and neat, and at the same time, it can be bent, turned and cut according to the customer’s requirements.
Cold rolling
Cold rolling is the re-rolling of hot-rolled steel sheets or strips to achieve higher precision and better surface quality. The cold rolling process requires multiple passes of rolls to achieve this, as well as treatments such as annealing and surface polishing.
Features of 321 Stainless Steel Coils
Huaxiao as professional stainless steel coil suppliers, our 321 stainless steel coils have the following features and advantages:
321 stainless steel coils have excellent corrosion resistance, which is mainly reflected in the following aspects:
Anti-Oxidation Performance: 321 stainless steel coils with the addition of titanium elements, can form a stable layer of the titanium oxide film in a high-temperature environment, which improves the anti-oxidation ability of stainless steel.
Corrosion Resistance: 321 stainless steel coils contain a high element of chromium and nickel, which can improve the corrosion resistance of stainless steel. It can resist the corrosion of most organic and inorganic acids, alkalis, and high concentrations of chlorides, and is widely used in marine, chemical, petroleum, and other industries.
Intergranular Corrosion Resistance: 321 stainless steel coils with the addition of the stabilizing element titanium can inhibit the intergranular corrosion of stainless steel at high temperatures, which improves the corrosion resistance of stainless steel.
321 stainless steel coils have excellent high temperature resistance, mainly in the following aspects:
Good High Temperature Strength: 321 stainless steel coils with the addition of titanium elements, can form stable carbides and oxides, improve the high temperature strength of stainless steel, so that it can maintain a better shape and mechanical properties at high temperatures.
Thermal Expansion Resistance: 321 stainless steel coils has good resistance to thermal expansion, able to maintain good dimensional stability at high temperatures, not easy to deformation or deformation is small.
Good Oxidation Resistance: 321 stainless steel coils with the addition of titanium elements, can form a stable layer of titanium oxide film at high temperatures, which improves the oxidation resistance of stainless steel, thus extending its service life in high temperature environments.
321 stainless steel coils have good strength and hardness, which is mainly reflected in the following aspects:
High Strength: 321 stainless steel coils with the addition of titanium elements, can form stable carbides and oxides, improve the high temperature strength and corrosion resistance of stainless steel, so that it has a high tensile strength and yield strength.
Good Plasticity: 321 stainless steel coils have good plasticity, which can be cold worked or hot worked for forming, bending and cutting and other processing operations, so as to meet the needs of different applications.
Moderate Hardness: 321 stainless steel coils have moderate hardness, with good wear resistance and scratch resistance, and can maintain a good surface finish and appearance in long-term use.
321 stainless steel coils have good processing properties, mainly in the following aspects:
Good Cold Workability: 321 stainless steel coils have good cold workability, can be processed and formed by rolling, bending, cutting, cold drawing and other methods, while not leading to problems such as embrittlement and deformation of stainless steel, which can ensure the forming quality of stainless steel coil.
Good Welding Performance: 321 stainless steel coils with the addition of stabilizing elements titanium, can effectively inhibit the precipitation and deformation of stainless steel at high temperatures, thus ensuring the good welding performance of stainless steel coil, you can use a variety of welding methods to connect.
Good Cutting Performance: 321 stainless steel coils have good cutting performance, can use cutting machinery and cutting tools for cutting and processing, while not producing serious wear and deformation, can ensure the accuracy of stainless steel coil and surface quality.
321 stainless steel coils have good weldability, mainly thanks to its addition of the stabilizing element titanium.
Titanium is a stabilizing element that can form stable carbides with carbon to prevent precipitation of unstable carbides at high temperatures, thus preventing problems such as embrittlement and deformation of stainless steel. At the same time, titanium can also form oxides with oxides, forming a protective film at high temperatures to prevent further erosion of stainless steel materials by oxides, which improves the corrosion resistance of stainless steel.
Due to the addition of titanium, 321 stainless steel coils have excellent welding properties and can be joined using a variety of welding methods, such as manual arc welding, TIG welding, MIG welding and plasma welding, while not causing deformation or embrittlement of the material due to the high temperatures generated during the welding process.
When using 321 stainless steel coils for welding, care needs to be taken to control the welding temperature and welding time to avoid introducing too much heat during the welding process, which can lead to problems such as deformation or deterioration of the stainless steel material. It is recommended that when using 321 stainless steel coils for welding, choose the supporting welding materials and equipment provided by professional stainless steel coil supplier, and strictly follow the operating procedures to ensure the welding quality and connection effect of stainless steel coil.
application of 321 Stainless Steel Coils
321 stainless steel coils have a wide range of applications and play an important role in various industries. No matter which industry you are engaged in, Huaxiao stainless steel coil suppliers can provide you with high-quality 321 stainless steel coils and professional supporting services that meet industry standards.
petrochemical industry
321 stainless steel coils have a wide range of applications in the petrochemical industry, most notably as a piping material. Its excellent corrosion resistance, high-temperature resistance, and oxidation resistance make it ideal for use in petrochemical engineering as a material for pipelines, vessels, and storage tanks. In addition, in other areas of the petrochemical industry, such as catalysts and catalytic support bodies, there is also a demand for the use of 321 stainless steel coil.
medical industry
321 stainless steel coils also have a wide range of applications in the medical industry, mainly for the manufacture of medical devices and medical equipment. Because of its high strength, corrosion resistance, and high-temperature stability, 321 stainless steel coils have an important role in the manufacture of surgical instruments, implants, and dental equipment. In addition, 321 stainless steel coils can also be used in the manufacture of medical pipes and containers, such as infusion sets, gas piping in the operating room, etc.
aerospace industry
321 stainless steel coils also have a wide range of applications in the aerospace industry, mainly for the manufacture of high-temperature and high-strength components. Due to its high-temperature resistance, corrosion resistance, and excellent strength properties, the 321 stainless steel coil has become one of the ideal materials for manufacturing key components such as aerospace vehicles and engines. Specific applications include the manufacture of turbine blades, combustion chambers, aero-engine housings, guide vanes, and other components. As professional stainless steel coil suppliers, we have an in-depth understanding of the needs of the aerospace industry and provide high-quality 321 stainless steel coils to meet our customers' needs.
food processing industry
In the food processing process, many substances are corrosive, if the use of poor quality materials can easily lead to product contamination or damage to equipment, and stainless steel coil is a very good corrosion resistance of the material, can avoid this situation. In addition, food processing requires a high-temperature environment, and 321 stainless steel coils have a very high-temperature resistance, so they can operate for a long time in a high-temperature environment without deformation or damage. At the same time, 321 stainless steel coils have excellent weldability, allowing for easy processing and repair. Huaxiao, as professional stainless steel coil suppliers, has a wide range of applications in the food manufacturing industry. Our 321 stainless steel coils have passed international standard quality certification to ensure the reliability and stability of quality, and have been recognized and trusted by food manufacturers.
FAQ
Stainless steel coils are cold rolled or hot rolled processed stainless steel sheet product, usually supplied in roll form. Stainless steel coils are widely used in construction, electric power, automobile, metallurgy, chemical industry, shipbuilding, machinery manufacturing and other fields. It is characterized by strong corrosion resistance, high strength, good heat resistance, smooth surface, good processing performance, etc. Common stainless steel coil materials are 304, 316, 321, etc. The thickness of stainless steel coils are generally between 0.3-10mm, the width is between 1000-3500mm, and the volume weight is also larger, generally ranging from several hundred kilograms to several tons.
321 stainless steel coils and 304 stainless steel coils have the following differences:
Material Composition: 321 stainless steel coils contain more than 5% of titanium elements, while 304 stainless steel coils do not contain titanium elements.
Corrosion Resistance: 321 stainless steel coils are more corrosion resistant than 304 stainless steel coils, especially in high temperature environment.
High Temperature Resistance Performance: 321 stainless steel coils than 304 stainless steel coils more high temperature resistance, can withstand high temperature environment for a long time use.
Processing Performance: 321 stainless steel coils are harder than 304 stainless steel coils, processing requires greater strength and higher temperature.
Application Areas: Due to its different properties, 321 stainless steel coils and 304 stainless steel coils application areas are also different. 321 stainless steel coils are more suitable for high temperature, corrosive occasions, such as petrochemical, aerospace, nuclear industry and other fields, while 304 stainless steel coils are more suitable for construction, kitchenware, medical equipment and other fields.
321 stainless steel coils and 316 stainless steel coils are two different stainless steel materials, and there are some differences between them, including the following:
Chemical Composition: 321 stainless steel coils contain the element titanium, while 316 stainless steel coils contain the element molybdenum. The addition of titanium elements can improve the high temperature resistance of 321 stainless steel coils, while the addition of molybdenum elements can improve the corrosion resistance of 316 stainless steel coils.
High Temperature Resistance: 321 stainless steel coils has good stability at high temperatures, and can be used in the manufacture of equipment in high temperature environments. And 316 stainless steel coils high temperature performance is relatively poor, usually used for low temperature or room temperature environment equipment manufacturing.
Corrosion Resistance: 316 stainless steel coils perform better in corrosive environments such as seawater and chemical substances, while 321 stainless steel coils has relatively poor corrosion resistance in these environments.
Processing Performance: 321 stainless steel coils has better processing performance than 316 stainless steel coils and is easy to process and form.
The service life of 321 stainless steel coils depends on factors such as its environmental conditions, maintenance and the load it is subjected to in the course of use. Generally speaking, if proper care and maintenance is carried out under normal use conditions, the service life of 321 stainless steel coil can reach decades or even longer. At the same time, 321 stainless steel coil has high corrosion resistance and high temperature tolerance, which can also extend its service life. However, if it is subjected to excessive load during use or in a harsh environment for a long time, it will affect its service life. Therefore, when selecting 321 stainless steel coil, you need to consider the working environment and load it is subjected to in order to ensure that its service life meets expectations.
The care and maintenance of 321 stainless steel coil can prolong its service life and keep it in good cosmetic condition. The following are some common methods of care and maintenance:
Cleaning: stainless steel surface needs to be cleaned frequently, you can use water and neutral detergent to gently wipe the surface stains, and then use a clean cloth to dry the water. Do not use cleaners containing chlorinated or acidic substances, as these substances will corrode the stainless steel surface.
Anti-Rust Treatment: If the stainless steel surface shows signs of rust, you can gently wipe the surface with a metal abrasive and then treat it with an appropriate anti-rust agent.
Avoid Heavy Pressure: Stainless steel coils should avoid heavy pressure and collision during transportation and use to avoid surface scratching or deformation.
Avoid Long-Term Exposure to Moisture: long-term exposure to moisture can lead to corrosion of the stainless steel surface, so it should be avoided as much as possible.
Regular Inspection: Regularly check the surface and connection parts of the stainless steel coil for damage or corrosion, and timely treatment and repair.
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