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This section provides an overview for rimmed steel as well as their applications and principles. Also, please take a look at the list of 2 rimmed steel manufacturers and their company rankings. Here are the top-ranked rimmed steel companies as of December, 2024: 1.Metal Supermarkets, 2.MEIHOKU KOGYO Co.,Ltd..
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Rimmed steel is a type of steel that undergoes minimal or no deoxidization during the ingot formation process. In contrast, steel ingots that are fully deoxidized are referred to as kiln-dried steel.
Rimmed steel, being insufficiently deoxidized, generates bubbles during the casting and solidification of the ingot. These bubbles form a tubular layer within the outer shell of the ingot, known as the rim layer. Originating from CO gas, these bubbles do not lead to defects in the steel as they collapse during the hot rolling process.
Rimmed steel, due to its lack of deoxidization and the absence of oxygen scavengers, offers a high yield at a relatively low cost. However, its minimal deoxidization leads to significant internal segregation and inconsistent quality, marked by varying levels of impurities like carbon and phosphorus. This inconsistency makes rimmed steel less suitable for machine parts requiring high reliability. It is typically used for products where segregation is not a concern, such as wire rods, plates, bolts, nuts, and tin plates.
Rimmed steel, characterized by its high dissolved oxygen content, releases sparks and gases during casting and solidification. This process forms a rimmed layer at the periphery, with a tubular bubble layer inside, leading to significant segregation. The quality of the steel varies greatly between the periphery, which is closer to pure iron, and the interior, which contains higher levels of impurities like phosphorus and carbon. When cut, the tubular bubbles in rimmed steel may manifest as surface imperfections, making it unsuitable for applications demanding high reliability.
Despite these characteristics, rimmed steel offers cost advantages due to the minimal use of oxygen absorbers and a high yield rate, with no cavities or shrinkage as seen in kiln-dried steels. The surface, being composed of pure iron, has good paint adherence, making rimmed steel suitable for applications like rolled steel where surface quality is a priority.
*Including some distributors, etc.
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Meihoku Kogyo Co., Ltd., founded in 1946 with headquarters in Minokamo City, Japan, is a manufacturer of steel wire. The company's main product is cold steel wire that is engineered for heading and forming. Its steel wire is available in carbon steel, boron steel, alloy steel, aluminum, and stainless steel. Cold steel wire is used in automobile engine parts, vehicle suspension parts, aircraft parts, fasteners, and consumer appliance parts. The company also offers custom manufacturing for products such as rods and wire with application-specific requirements, which includes design drawing services.
Metal Supermarkets, founded in 1994 and headquartered in Blaby, Leicester, United Kingdom, is a franchise of Metal Supermarkets Canada, and a supplier of small-quantity cut metals. The company serves individual consumers, trade professionals, and commercial operators with a wide stock of metal forms, including engineering steels at clients' request. Its also offers alloys and rolled metals products in various shapes and grades, such as bars, sheets, and pipes. The company has over 115 locations across the United States, Canada, and the United Kingdom.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Metal Supermarkets |
71.4%
|
| 2 | MEIHOKU KOGYO Co.,Ltd. |
28.6%
|
Derivation Method
The ranking is calculated based on the click share within the rimmed 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.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
Japan
|
1 | 100.0% |
