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This section provides an overview for tin-free steel as well as their applications and principles. Also, please take a look at the list of 12 tin-free steel manufacturers and their company rankings. Here are the top-ranked tin-free steel companies as of December, 2024: 1.Toyo Kohan Co., Ltd., 2.Shanghai Zhengshang Industrial Co., Ltd..
Table of Contents
Tin-Free Steel is an alternative surface-treated steel sheet that include the usage of tin material.
Tin-Free Steel features an electrolytic chromic acid treatment applied to cold-rolled carbon steel sheets to form metallic chromium and chromium hydrated oxide layers on the surface layer. Electrolytic chromic acid treatment improves corrosion resistance. Compared to tin-plated steel sheets, it has a lower environmental impact and is easier to recycle.
It is also characterized by a relatively low cost compared to tin-plated steel sheet.
Tin-Free Steel is widely used as a material for canning. The reason is that it has the durability needed to protect food from factors such as oxygen and moisture while the food is stored.
In electronic components, thin sheets are used. The reason is that they possess both the flexibility and conductivity of metals.
They are sometimes used as a building material for roofing, walls, siding, roof drains, etc. Reasons are for its strength, durability, and aesthetic appearance.
They are also used as a material for vehicle parts.
They may be used in household products, e.g., cookware, dishes, toys, trash cans, washers and dryers, etc.
Tin-Free Steel is protected from rust and corrosion by an electrolytic chromic acid treatment that forms a chromium hydrated oxide layer on the surface. The chromium hydrated oxide layer is very hard and chemically stable, and is characterized by excellent corrosion resistance. It also improves the adhesion of paints.
Electrolytic chromic acid treatment is a treatment method that forms a chromium hydrated oxide layer on the surface of iron and steel. This treatment forms a hard, chemically stable chromium hydrate oxide layer on the surface of iron and steel to protect the surface.
A chromium hydrate oxide layer is formed on the surface of tin-free steel by electrolytic chromate treatment. The chromium hydrate oxide layer is very hard and chemically stable, and therefore, the adhesion of the paint is high.
The chromium hydrated oxide layer is formed uniformly, allowing paint to be applied evenly, improving paint adhesion, simplifying the painting process, and providing a beautiful finish.
Tin-free steel is also used for surfaces such as building materials and home appliances because the paint does not peel easily and remains beautiful for a long time after painting.
Tin-Free Steel is made from cold-rolled coils, which gives it a fine surface metallurgical structure, high strength, and good workability. It is easy to form and process, and is used in a wide range of applications such as automotive parts and construction materials.
Tin-Free Steel does not use tin and does not contain hazardous substances such as lead and cadmium, and thus has a low environmental impact. It is also suitable for recycling as it is reused as steel.
Tin-Free Steel has a tin-plated surface, making it impervious to moisture and humidity. It is used in waterproof applications such as roofing and exterior wall materials to enhance the durability and livability of buildings.
Tin-Free Steel is heat resistant. The reason is that the chromium hydrated oxide layer formed on the surface is chemically stable even at high temperatures. It is used for food containers used in high-temperature environments such as ovens and microwave ovens, and for automotive parts that require high-temperature processing.
Tin-Free Steel forms metallic chromium and chromium hydrated oxide layers on its surface. The formed chromium hydrate oxide layer is extremely hard and chemically stable, and has excellent wear resistance. In addition, because cold-rolled coils are used, the surface metallurgical structure is fine, and the mechanical strength is high and impact resistance is excellent.
It is also suitable for products used in environments subject to severe friction and impact, such as automotive parts and home appliances.
Examples of applications include automobile doors, hoods, wheels, and other parts, as well as housings and exterior parts of home appliances. It is also used as a building material when strength to withstand impacts such as earthquakes is required.
The chromium hydrated oxide layer formed on the surface of tin-free steel is extremely hard and chemically stable, making it highly resistant to abrasion.
Because of its excellent abrasion resistance, it can be used for a long period of time in environments where friction and wear are severe, such as automotive parts and building materials. For example, automotive parts such as doors, hoods, and other open/close parts, and wheels are examples of applications.
In building materials, it is used in components exposed to the outdoors, such as roofing and exterior wall materials. Roofing and exterior wall materials are exposed to the natural environment, such as wind, rain, and ultraviolet rays, and require materials with high surface hardness and excellent abrasion resistance.
Tin-Free Steel is characterized by the ability to express a variety of colors by applying electrolytic coloring treatment to its surface. Specifically, an oxide film is generated by the electrolytic coloring solution, and depending on the thickness of the oxide film, the color changes due to interference, reflection, and refraction of light.
Tin-Free Steel's electrolytic coloring process can express a variety of color tones. Therefore, tin-free steel is also used in applications where color is important, such as building materials and home appliances.
Tin-Free Steel generally has good resistance to sulfide blackening. This is because it is treated with electrolytic chromic acid to form a chromium hydrated oxide layer on the surface. The formed chromium hydrate oxide layer acts as a protective film to prevent the occurrence of sulfide blackening and protects tin-free steel from sulfide blackening. However, depending on the operating environment and conditions, sulfide blackening may occur, requiring appropriate maintenance.
The blackening that occurs in food cans is a blackish-brown deposit caused by the reaction of hydrogen sulfide contained in the can material with the acidic food ingredients that fill the can. Food cans are made of metal materials such as iron and aluminum, which contain trace amounts of sulfides. Heat sterilization and other processes acidify the food ingredients that fill the can, and under these acidic conditions they react with hydrogen sulfide to produce black sulfide deposits.
*Including some distributors, etc.
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JFE Steel America, Inc., a subsidiary of JFE Steel Corporation and established in 1994, is located in North Kingstown, Rhode Island, and is a manufacturer and supplier of flat-rolled steel products. Their product offerings include galvanized steel with a zinc coating for corrosion protection, cold-rolled steel with improved strength and smoother surface, hot-rolled steel used for beams, plates, and bars, stainless steel resistant to corrosion and high temperatures, and alloy steel with enhanced strength, toughness, and corrosion resistance. JFE Steel America's products find applications in diverse industries like construction, automotive, and manufacturing.
Jiangsu suxun new material Co.,Ltd. was established in 2007 and is located in Jiangsu, China, and is a manufacturer of Tin Free Steel, and Tinplate for various industrial applications. The company's product chart consists of tinplates, tin-free steel coils for crown corks, bottle caps, iron caps, and, tinplate sheets along with tinplate lids, galvanized aluminum sheets, and galvanized steel coils that have applications in the construction, automotive, aerospace, material handling, and, metalworking sectors as well as these products are also exported to Australia, Canada, Germany, France, Italy.
SHANGHAI Quanjiang was established in 2001 and is located in Shanghai, China is a manufacturer of tin mill products for various industrial applications. The company's product folio includes electrolytic tin plates, tinplate sheets, tinplate lids, galvanized aluminum sheets, and galvanized steel coils that have applications in the construction, automotive, aerospace, material handling, and, metalworking sectors. The company has an annual production capacity of 600,000 metric tons and it also offers tinplate lamination, coil coating, and tinplate cutting services.
Toyo Kohan Co., Ltd., established in 1934 and headquartered in Tokyo, Japan, manufacturer of tinplate, sheet metal, surface-treated steel sheets, and functional materials. Its product range includes tinplate for various cans and caps, tin-free steel for art cans and bottle crowns, laminated steel sheets for food and beverage containers, electro-galvanized steel sheets for PC and entertainment equipment, and nickel-plated steel sheets for battery and vehicle-related components. The company is knwon for its achievements, receiving the prestigious Okochi Memorial Grand Technology Prize and holding a significant number of patents, with 1,214 patents registered between 2009 and 2018.
Qingdao Sino Sunton Steel Co., Ltd. was established in 2010 and is based in Shangai, China, is a manufacturer of steel products for various industrial applications. The company's product line consists of galvanized, galvalume, prepainted steel coils, steel roofing sheets, and, tinplate steels that have applications in the automotive, construction, agriculture, transportation, energy, and, material handling sectors. The company's annual production capability is 800,000 tons and it also offers corrugation, slitting, bending, punching, and other deep processing services.
Indo Global Steel was established in 1975 and is based in Mumbai, India, and is a manufacturer and supplier of tinplate products for various industrial applications. The company's product folio includes galvanized coil and sheet, tinplate coil and sheet, cold rolled coil and sheet, and MS sheets, which are obtainable in multiple stipulations and altered forms as per the requirements of the clients. These products are widely used in aeronautical, automotive, water treatment, mining, and, construction industries.
JCCO Pipeline Industry was established in 2010 and is based in Tianjin, China, and is a manufacturer and supplier of pipeline products for various industries. The company is a member of JCII Group, which is one of the pipeline manufacturing enterprises in China and its product chart consists of galvanized steel pipe, pipe accessories, sections, PV solar mounting brackets, and tin plates. The annual production capacity of the company is 5 million tons and its products are widely used in airports, subways, the gas and water transmission industry, stadiums, and the agriculture sector.
Min Jia was established in 2009 and is based in Fujian, China, and is a manufacturer and supplier of tin plate packaging solutions for various industries. The company's annual capacity is 50,000 MTS of coated and printed tin sheets and its product folio includes tin cans, plates, and sheets that comply with JIS and ECHA standards and are also certified with SVHC and ROHS. The company also provides tin cans, and, can lids that have applications in food processing, residential equipment, electronic appliances, and, material handling sectors.
Tata Tinplate, established in 1920, operates as a manufacturer and distributor of electrolytic tinplate and electrochrome coated steel, headquartered in West Bengal, India. The company constantly provides consumers with quality items that meet demanding customer standards. The company's primary product offerings encompass highly adaptable packaging substrates extensively used for packaging processed meals. The company serves various segments, encompassing edible oils, paints and pesticides, processed foods, batteries and aerosols, and manufacturers of bottle crowns.
Nicomet was established in 1993 and is headquartered in Mumbai, India, as a manufacturer of battery grade Nickel Sulphate Crystals, which are famous for superior quality. These crystals are extensively utilized in producing batteries for electric vehicles on a global scale. The organization has gained a status for its unique service and expeditious delivery operations. This phenomenon is made feasible due to the continuous influx of novel materials. The continuous influx of novel materials is made feasible due to enduring partnerships with European steel suppliers.
AIYIA Industrial Co., Ltd. was founded in 2008 and is based in Shanghai, China, and is a supplier of metal raw materials for various industries. The company provides steel and aluminum products such as galvanized steel coil, cold rolled steel coil, stainless steel coil, and, tinplates as well as tin-free steel products, aluminum coils, roofing sheets, and spring steel strips which are widely used in construction, industry, agriculture, food packaging, and other fields. The company's monthly output is 30,000 tons and its products are exported to Africa, Latin America, the Middle East, Southeast Asia, and, Europe.
Shanghai Zhengshang Industrial Co., Ltd. was founded in 2000 and is headquartered in Henan, China, as a supplier of all kinds of materials. The company offers various construction materials, including steel, aluminum, copper, plastic, and other metallic elements. The company possesses sophisticated professional production equipment, highly skilled production experts, and a contemporary management structure that rigorously oversees the quality of its products. Furthermore, the facility possesses a cutting-edge color coating manufacturing machinery in China, enabling the creation of a wide range of hues. These coatings exhibit no color distortion, do not peel off, and demonstrate excellent corrosion resistance.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Toyo Kohan Co., Ltd. |
66.7%
|
| 2 | Shanghai Zhengshang Industrial Co., Ltd. |
33.3%
|
Derivation Method
The ranking is calculated based on the click share within the tin-free steel page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
China
|
5 | 62.5% |
|
United States of America
|
1 | 12.5% |
|
Japan
|
1 | 12.5% |
|
India
|
1 | 12.5% |
