304/304L stainless steel coil is a type of austenitic stainless steel coil that is widely used due to its excellent corrosion resistance, versatility, and high strength. It is one of the most common grades of stainless steel and is often referred to as “18-8” stainless steel due to its composition of 18% chromium and 8% nickel.
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304/304L stainless steel coil offers several features and benefits that make it a widely used and versatile material in various applications. Here are some key features and benefits of 304/304L stainless steel coil:
- Corrosion Resistance: 304/304L stainless steel coil exhibits excellent corrosion resistance, making it suitable for use in a wide range of environments. It resists oxidation, rust, and staining from most chemicals, acids, and atmospheric conditions.
- High Strength: 304/304L stainless steel coil has good mechanical properties and high tensile and yield strength, providing structural integrity and durability. It offers good strength-to-weight ratio, making it suitable for load-bearing applications.
304/304L Stainless Steel Coil For Sale
304/304L Stainless Steel Coil Factory
- Formability: 304/304L stainless steel coil is easily formable and can be shaped and fabricated into various components and structures. It can be rolled, bent, stamped, and deep drawn without sacrificing its mechanical properties.
- Heat Resistance: 304/304L stainless steel coil exhibits good heat resistance, allowing it to maintain its mechanical properties at elevated temperatures. It is suitable for applications involving moderate heat exposure.
304/304L Stainless Steel Coil Factory in Stock
304/304L Stainless Steel Coil Supplier
- Hygienic Properties: The smooth and non-porous surface of 304/304L stainless steel coil makes it easy to clean and maintain high levels of cleanliness. It is commonly used in food processing equipment, sanitary environments, and medical devices.
- Wide Range of Applications: 304/304L stainless steel coil finds application in various industries, including automotive, construction, kitchenware, appliances, and decorative applications. It is commonly used in cookware, utensils, sinks, architectural panels, and structural components.
304/304L Stainless Steel Coil Manufacturer
304/304L Stainless Steel Coil Supplier
- Versatility: 304/304L stainless steel coil is highly versatile and can be used for a wide range of applications. It is suitable for both indoor and outdoor use and exhibits good compatibility with various fabrication processes, such as welding, machining, and forming.
- Cost-Effective: 304/304L stainless steel coil is generally more affordable compared to other stainless steel grades, making it a cost-effective option for applications that require good corrosion resistance and mechanical properties.
- Recyclability: Like other stainless steel grades, 304/304L stainless steel coil is recyclable. It can be recycled and reused, contributing to sustainable practices and reducing environmental impact.
Wholesale 304/304L Stainless Steel Coil
304/304L Stainless Steel Coil Factory in China
China 304/304L Stainless Steel Coil Supplier
|Finish||NO.1(Hot Rolled), NO.2B(Cold Rolled), Hairline, Brushed, BA, NO.3, NO.4, NO.240, NO.400, NO.8 etc.|
|Thickness||3mm-15mm (Hot Rolled) ;0.3mm-8mm (Cold Rolled) can be customized ;|
|Width||1000mm/1250mm/1500mm, can be customized|
|Package||Standard seaworthy package(protected by waterproof paper,wrapped in iron sheet, fixed by steel bars)|
- Melting: The raw materials, including iron, chromium, nickel, and other alloying elements specific to the desired stainless steel grade, are melted together in an electric arc furnace or an induction furnace.
- Refining: The molten steel is refined to remove impurities and control the composition. Various refining processes, such as Argon Oxygen Decarburization (AOD) or Vacuum Oxygen Decarburization (VOD), can be employed.
- Casting: The refined molten steel is cast into large semi-finished shapes, such as slabs or billets, through continuous casting or ingot casting. The shapes are then cooled.
- Hot Rolling: The cast shapes are reheated to a high temperature and then hot rolled to reduce their thickness and to break down the cast structure, making the steel more ductile and formable. This process creates a hot-rolled coil.
- Annealing: The hot-rolled coil undergoes an annealing process to relieve internal stresses and improve ductility. This process involves heating the coil to a specific temperature and then slowly cooling it down. It helps to refine the grain structure and create a more uniform material.
- Cold Rolling: The annealed coil is further reduced in thickness through cold rolling. The hot-rolled coil is passed through a series of rolling mills, where it is progressively reduced in thickness to the desired final thickness. Cold rolling not only reduces the thickness but also improves the surface finish and increases the strength and dimensional accuracy of the stainless steel.
- Annealing and Pickling: After cold rolling, the stainless steel coil undergoes another annealing process called annealing and pickling. This involves heating the coil to a specific temperature and then pickling it in acid to remove any scale that formed during the cold rolling process.
- Skin Passing: The annealed and pickled coil may undergo a skin-pass rolling process to improve the surface finish and flatness. This involves applying light tension and rolling the material through a set of rolls to reduce the roughness and enhance the smoothness of the surface.
- Finishing Operations: After skin passing, the stainless steel coil may undergo additional finishing operations, such as further pickling and passivation, to remove any remaining scale or stains and to enhance corrosion resistance.
- Cutting and Packaging: The 304/304L stainless steel coil is cut into the desired lengths or sizes according to customer requirements. It is then properly packaged and prepared for shipment.
304 and 304L are types of stainless steel that belong to the 300 series of austenitic stainless steels. Both contain a high percentage of chromium and nickel which gives them excellent corrosion resistance. 304L has a lower carbon content than 304, which makes it even more resistant to intergranular corrosion.
Here are some of the common applications for 304/304L stainless steel coil:
- Food & Beverage Industry: 304/304L stainless steel is commonly used in kitchen equipment, appliances, and utensils due to its resistance to food acids and ease of cleaning. This includes brewing equipment, milk processing equipment, wine making equipment, and more.
- Pharmaceutical & Chemical Equipment: Due to its resistance to a wide range of chemicals, 304/304L stainless steel is commonly used in the manufacture of pharmaceutical and chemical processing equipment.
- Heat Exchangers: Because of its good heat resistance, it is used in various types of heat exchangers.
- Architectural Panels and Trim: Its excellent formability and aesthetic appearance make 304/304L stainless steel a good choice for architectural applications. It’s commonly used for paneling, roofing, and decorative trim.
- Automotive Parts: 304/304L stainless steel is used in various automotive parts due to its strength, corrosion resistance, and aesthetic appeal.
- Medical Devices: The corrosion resistance and easy-to-clean nature of 304/304L stainless steel make it suitable for medical instruments and devices.
- General Industrial Equipment: 304/304L stainless steel is used in a variety of industrial equipment and components, particularly in processing industries.
Packaging of stainless steel coil is important to protect the material from damage during transit, handling, and storage. Here is a general overview of how stainless steel coils are packaged:
- Wrapping: The coil is typically first wrapped with a protective material like plastic film or waterproof paper to protect the surface from scratches or other potential damage. This also helps to prevent exposure to moisture which can cause rusting.
Stainless Steel Coil Package 1
- Edge Protection: The edges of the coil are often protected with additional material, such as cardboard or hard plastic edge protectors, to prevent damage to the edges of the coil. This is important because the edges can be particularly susceptible to damage during handling.
- Metal Strapping: Metal straps are usually used to secure the coil and the protective packaging. This helps to ensure the coil stays intact during transportation.
Stainless Steel Coil Package 2
- Wooden Pallet: For additional support, the coil is often placed on a wooden pallet. This provides a solid base for the coil and makes it easier to move with a forklift.
- Outer Packaging: An outer layer of packaging, often made of metal or wood, is sometimes used for additional protection, especially for international shipping where the coils might be exposed to harsh conditions.
Stainless Steel Coil Package 3
- Labeling: Finally, the coil is labeled with important information such as the size, grade, heat number, and any other relevant details about the steel. This helps to ensure the right material gets to the right place.