千曲鋼材 List of Products and Services

We would like to introduce our product 'COR-TEN'. It is a steel material with excellent weather resistance when used in an uncoated specification or with rust stabilization treatment. It has been applied in fields requiring weather resistance for structures such as bridges and buildings. 【Lineup】 ■COR-TEN490 ■COR-TEN570 ■COR-TEN O *For more details, please download the PDF or feel free to contact us.

• Steel
• Other metal materials

We would like to introduce our general-purpose weather-resistant steel plate, "NAW." This product is a type of steel that has weather resistance under general usage conditions and has been applied in fields that require weather resistance, such as construction, railway vehicles, and various industrial machinery. Please feel free to contact us if you have any inquiries. 【Product Lineup】 ■NAW400 ■NAW490 *For more details, please download the PDF or feel free to contact us.

• Steel
• Other metal materials

We would like to introduce our product 'S-TEN'. It is a type of steel that is resistant to dew point corrosion from sulfur dioxide gas and exhaust gases. It has been applied in fields that require resistance to sulfuric and hydrochloric acids, such as boiler heat exchangers and their ancillary equipment, air preheaters, dust collectors, and chimneys. Please feel free to contact us if you have any inquiries. 【Product Lineup】 ■S-TEN1 ■S-TEN2 *For more details, please download the PDF or feel free to contact us.

• Steel
• Other metal materials

We would like to introduce "ABREX," which we handle. This steel material has 1.5 to 5.0 times the wear resistance compared to general soft steel. It has been applied in fields that require wear resistance, such as shovel loader buckets, conveyor hoppers, dump truck beds, and bulldozer blades. Please feel free to contact us when you need assistance. 【Product Lineup】 ■ABREX400 ■ABREX450 ■ABREX500 ■ABREX600 *For more details, please download the PDF or feel free to contact us.

• Steel
• Other metal materials

We would like to introduce our product 'WEL-TEN'. It is a high-strength steel plate with a wide variety and excellent weldability. It has been applied in a wide range of uses, including pressure vessels, heavy and crude oil tanks, penstocks, bridges, steel structures, construction machinery, and industrial machinery. Please feel free to contact us when you need assistance. 【Product Lineup (Partial)】 ■WEL-TEN540 ■WEL-TEN590 ■WEL-TEN610 ■WEL-TEN690 ■WEL-TEN780 ■WEL-TEN950 *For more details, please download the PDF or feel free to contact us.

• Steel
• Other metal materials

Here are some examples of sign construction using COR-TEN. Based on the logo sample provided by cafeULuru, we created cutting data. To ensure an even and uniform formation of rust, we applied shot blasting before delivery. After installation, the sign will be exposed to rain and wind, and over time, a layer of rust (protective rust) will form on the surface. We were able to create a sign that fits very well with the atmosphere of the store. 【Case Overview】 ■ Client: cafeULuru (Iwaki City, Fukushima Prefecture) ■ Cutting Data: 6mm X 200 X 500, letter cut-out processing ■ Processing: Laser cutting + shot blasting *For more details, please refer to the PDF document or feel free to contact us.

• Steel

We would like to introduce the features of our weather-resistant steel material, 'COR-TEN.' It forms a protective rust layer on the surface, which suppresses further rust development. When used with paint, the lifespan of the paint is extended. Additionally, the subdued color tone of the protective rust and its changes over time enhance the aesthetic effect of the appearance. Utilizing these features, it is used in a wide range of fields, including architecture and monuments. [Features] ■ Forms a protective rust layer on the surface, suppressing further rust development ■ Excellent weather resistance allows for use without paint ■ When used with paint, the lifespan of the paint is extended ■ The subdued color tone of the protective rust and its changes over time enhance the aesthetic effect of the appearance *For more details, please refer to the PDF document or feel free to contact us.

• Steel

COR-TEN is a weathering steel that protects against the weakness of steel, "rust," with "rust." When exposed to the atmosphere, this product initially develops rust similar to ordinary steel, but over time, some of that rust gradually becomes dense and adheres closely to the base material. This rust layer protects the base material, suppressing further corrosion. Due to its excellent weather resistance, it can be used without paint, and even when painted, the spread of rust from paint defects is suppressed, resulting in a longer paint lifespan. **Features** - Protects against the weakness of steel, "rust," with "rust." - Excellent weather resistance. - Usable without paint. *For more details, please refer to the PDF document or feel free to contact us.*

• Steel

Regarding "Bending Processing of Special Steel," we would like to introduce our stock items as examples. For the press bending of high-tensile steel WEL-TEN590RE and the roll bending of S-TEN1, these materials have good ductility and are suitable for bending processing. On the other hand, ABREX400 (wear-resistant steel plate) is a hard material, making it difficult to bend, and it has a strong springback (the force that causes the plate to return), requiring specialized techniques. However, there are some processes that can accommodate gentle bends. We can assist with inquiries regarding the feasibility of each bending process, as well as estimates and processing. Please feel free to contact us. *For more details, please refer to the PDF document or feel free to reach out to us.

• Processing Contract

The corten steel we have in stock changes its appearance over time while being exposed to rain and wind in its unblemished black skin state, without rusting. When it is newly produced, it behaves like ordinary steel, with rust being washed away by rain and wind, but after a few months, a dense layer of rust (protective rust) begins to form on the surface. In this material, we introduce numerous examples of works made from 'corten,' a material that enhances the inherent texture of iron and allows you to enjoy the beauty of rust. Please take a moment to read it. [Contents] ■ The flow of how corten becomes "beautiful" ■ Newly produced corten is not rusty! ■ Look where it is being used *For more details, please refer to the PDF document or feel free to contact us.

• Steel

High-tensile steel plates and wear-resistant steel plates are in stock! Immediate delivery is possible! Please feel free to contact us! This document summarizes the sizes, widths, thicknesses, weights, and processing applications of "high-tensile steel plates" and "wear-resistant steel plates." - I suddenly need steel plates... - I want a large quantity of steel plates right away! - I want to confirm the specifications for materials to be installed in the repair section. - I want to use it for complex shapes, so I would like to check if I can order a lot of thick steel plates... This document is designed to meet such requests. Our company processes the materials at our own factory and can deliver them consistently. Additionally, we handle a wide variety of steel plates, so please feel free to inquire. *For more details, please download the document or contact us.

• Steel

ABREX" is a steel plate characterized by its hardness and wear resistance. It excels in both scratching wear (abrasive wear) and gouging wear (impact wear), contributing to the longevity, thinning, and lightweighting of the components used. The specifications are divided according to Brinell hardness, and the thickness range is wide, making it suitable for various applications. We have all product lines in stock. [Features] - Extremely hard and wear-resistant - Abundant specifications and sizes with Brinell hardness of 400, 450, 500, etc. - Speed welding possible with minimal preheating - Supports not only standard steel plate sales but also cutting and bending processing ★ We offer the "ABREX Perfect Book," which includes information on the types of this material, test results, and welding/bending processing guidelines! You can view it immediately via "PDF Download.

• Steel

At Chikuma Steel, we process high-strength steel plates and wear-resistant steel plates. We respond to customer requests such as, "I need materials for the repair section" and "I want it in a complex shape." We also perform welding processing for dump truck beds (vessels) and more. The images displayed show materials used for repair parts in construction machinery, primarily made from high-strength steel plates. *For more details, please contact our company.*

• Steel

"WEL-TEN" - A super versatile high-tensile steel with excellent tensile strength! It is one of the high-tensile steel plates commonly referred to as "high-tens" or "helten." Compared to ordinary steel known as "SS400," it excels in tensile strength, making it effective for improving equipment strength and reducing the weight of machinery. Our company stocks a wide range of products including "WEL-TEN540," "WEL-TEN590 grade," and "WEL-TEN780 grade." 【Features】 ■ Super versatile with excellent tensile strength ■ Effective for improving equipment strength and reducing the weight of machinery ■ Excellent weldability and workability, allowing for use in various applications ■ Capable of handling cutting, bending, and edge preparation processes 【Main Applications】 ■ Construction machinery buckets ■ Trucks and trailers ☆ Additionally, it is used in all areas where weight reduction is necessary!! *For more details, please refer to the PDF document or feel free to contact us.

• Steel

The weight loss due to wear decreases with the increase in surface hardness of steel, so steel that requires wear resistance needs to have high surface hardness. Nippon Steel's "ABREX" is designed with a focus on wear resistance against soil, rocks, etc. It has 2 to 5 times the wear resistance compared to soft steel, depending on the hardness level. You can view the results of the "Gouging Wear Test" and "Scratching Wear Test" from the PDF download. We provide detailed explanations using diagrams and tables, so please take a look. 【Features】 ■ Focus on wear resistance against soil, rocks, etc. ■ 2 to 5 times the wear resistance compared to soft steel, depending on the hardness level. *For more details, please refer to the PDF materials or feel free to contact us.

• Steel

"COR-TEN" is a weather-resistant steel material that protects against the weakness of steel, which is "rust," with "rust." When left exposed to the atmosphere, it rusts like ordinary steel, but eventually forms a protective rust layer on the surface, suppressing further rust development. Due to its excellent weather resistance, it can be used without paint, and even when painted, the spread of rust from paint defects is suppressed, resulting in a longer paint lifespan. [Features] ■ Forms a protective rust layer on the surface, suppressing further rust development ■ Excellent weather resistance allows for use without paint ■ When painted, the paint lifespan is extended ■ The subdued color of the protective rust enhances the aesthetic effect of the appearance ■ We offer standard steel sheet sales, as well as cutting and bending processing ★ We also have "usage examples" posted on our company website. *For more details, please refer to the PDF materials or feel free to contact us.

• Steel

When exposed to the atmosphere, COR-TEN initially develops rust similar to ordinary steel, but over time, some of that rust gradually becomes dense and adheres closely to the base material. This rust layer protects the base material, thereby suppressing subsequent corrosion. This product was developed in 1933 based on the results of long-term exposure tests of over 30,000 test specimens. Since then, global exposure tests and follow-up investigations of existing structures have continued, leading to ongoing improvements. The steel must contain weather-resistant elements that contribute to the formation of protective rust, and for weathering steel to generate protective rust, it is necessary to undergo cycles of wet and dry conditions in the atmosphere. 【Features】 - The rust layer protects the base material, thereby suppressing subsequent corrosion. - The steel must contain weather-resistant elements that contribute to the formation of protective rust. - Excellent weather resistance can be achieved by finding an optimal composition. - For weathering steel to generate protective rust, it is necessary to undergo cycles of wet and dry conditions in the atmosphere. *For more details, please refer to the PDF document or feel free to contact us.

• Steel

We would like to introduce five excellent features of the weather-resistant steel 'COR-TEN' handled by Chikuma Steel Co., Ltd. First, it has excellent weather resistance, allowing it to be used without paint. Like ordinary steel, it can also be painted, and in addition, when painting defects occur, the spread of rust is suppressed, resulting in a longer paint lifespan and reduced repainting costs. Furthermore, weldability has been carefully considered, keeping the carbon content low, which allows for easy welding using any method, including manual and submerged arc welding. It has processing characteristics similar to ordinary steel and has produced over 2.6 million tons since its launch. 【Features】 ■ Weather resistance ■ Paintability ■ Weldability ■ Workability ■ Reliability *For more details, please refer to the PDF document or feel free to contact us.

• Steel

"COR-TEN" is a weather-resistant steel that protects against the weakness of steel, "rust," with "rust" itself, and has various workability features. It is possible to perform strain relief through spot heating and line heating. Just like ordinary steel, even when heated for strain relief, there is no degradation of the material. Additionally, both shear cutting and gas cutting can be easily performed just like ordinary steel, and if preheating and post-heating are done before and after gas cutting, subsequent cold processing will be even better. [Workability Overview] ■ Cold bending processing ■ Drilling and cutting processing ■ Hot processing ■ Cutting ■ Strain relief through spot heating and line heating *For more details, please refer to the PDF document or feel free to contact us.

• Steel

We present the results of a comparative test on the undercoating corrosion rate after one year of exposure for "COR-TEN," ordinary carbon steel, and 0.2% copper-containing steel that were painted. In this case, the surface treatment was phosphoric acid treatment, the primer used was a primer, and the topcoat was a urea alkyd paint. Additionally, the left photo shows the condition after 8 months of exposure, with a scratch made diagonally to break the coating on the same test piece. As a result, our product excelled in all tests, showing an average of 5 times better performance than copper-containing steel and 70 times better than ordinary steel when compared to the coating materials. *For more details, please refer to the PDF document or feel free to contact us.

• Steel

Introducing 'VINCOR' manufactured and sold by Chikuma Steel Co., Ltd. By simulating the condition of aging from the shipping stage, we take into account the initial color tone. We quantify and reproduce the color nuances using indices that have a high correlation with color. There are various examples of installations, such as partition walls within restaurants. You can view installation example photos through the PDF download. Please take a look. 【Features】 ■ By simulating the condition of aging from the shipping stage, we take into account the initial color tone. ■ We quantify and reproduce the color nuances using indices that have a high correlation with color. *For more details, please refer to the PDF materials or feel free to contact us.

• Steel

"COR-TEN" is a weather-resistant steel that protects against the weakness of steel, which is "rust," with "rust" itself. When this product is used with a coating, even if corrosion of the base material begins from defects or pinholes in the coating film, the progression of rust is slow, and there is less blistering and peeling of the coating, making it possible to reduce the frequency of repainting. Leveraging this feature, it is used in various fields of iron, such as buildings, shipping containers, tanks, industrial machinery, and bridges. [Features] - Rust progression is slow even if corrosion of the base material begins from defects or pinholes in the coating film. - There is less blistering and peeling of the coating. - The frequency of repainting can be reduced. *For more details, please refer to the PDF document or feel free to contact us.

• Steel

"COR-TEN" is a weather-resistant steel that protects against the weakness of steel, which is "rust," with "rust" itself. Not only is it economical when used in its bare form, but the subdued tones of the protective rust and its changes over time also provide excellent aesthetic effects. Leveraging these features, it is used in a wide range of fields, including architecture and monuments. [Features] ■ Economical when used in its bare form ■ The subdued tones of the protective rust and its changes over time provide excellent aesthetic effects ■ Used in a wide range of fields, including architecture and monuments *For more details, please refer to the PDF materials or feel free to contact us.

• Steel

COR-TEN is a weather-resistant steel that uniquely overcomes the greatest weakness of steel, which is rust, by preventing it with rust itself. When left exposed to the atmosphere in its bare form, it initially rusts like ordinary steel, but eventually, due to the action of alloying elements, it forms a dense rust layer (protective rust) on the surface, which suppresses further rust development. When this product is painted, the repainting cycle is extended compared to ordinary steel, thus reducing repainting costs. It contributes to the reduction of LCC (Life Cycle Cost) and environmental impact in various applications. **Features** - Prevents rust, the greatest weakness of steel, with rust - Forms a dense rust layer (protective rust) on the surface due to the action of alloying elements - Reduces repainting costs - Widely used in bridges, building exteriors, etc. - Contributes to the reduction of LCC and environmental impact *For more details, please refer to the PDF document or feel free to contact us.*

• Steel

Chikuma Steel Co., Ltd. is a company engaged in the sales business of special steel and ordinary steel, primarily handling products from Nippon Steel for fields such as construction machinery, railway vehicles, architecture, bridges, and environmental equipment. Our company also stocks non-magnetic steel with the characteristic of surface hardening that occurs more with impact, known as "Impact-Resistant Wear Steel Plate (NM-13MN)." It is used for applications such as safes and inner lining for shot blasting. *For product specifications, please refer to the inventory dimensions and weight table.

• Other metal materials

In recent years, environmental issues have been prominently addressed, leading to a significant increase in the construction of flue gas treatment facilities, including tall chimneys, air preheaters, dust collectors, and flue gas desulfurization systems. In the flue gas treatment processes of plants that use coal or oil as fuel, there is a focus on improving desulfurization efficiency, which has resulted in low-temperature corrosion caused by sulfur oxides becoming a major problem. This low-temperature corrosion, known as sulfuric acid dew point corrosion, is caused by high-temperature, high-concentration sulfuric acid and, unlike general atmospheric corrosion, severely corrodes not only ordinary steel but also stainless steel. "S-TEN" has been developed as a welding structural material that is resistant to sulfuric acid dew point corrosion and hydrochloric acid dew point corrosion. "S-TEN 1" is effective against sulfuric acid dew point corrosion and hydrochloric acid dew point corrosion, while "S-TEN 2" is effective against sulfuric acid dew point corrosion. *For more details, please refer to the PDF materials or feel free to contact us.*

• Steel

"S-TEN" is a steel plate that excels in resistance to sulfuric acid and hydrochloric acid dew point corrosion in flue gas treatment equipment such as coal boilers and waste incineration facilities. In areas where sulfuric acid dew point corrosion is predominant, ordinary steel and stainless steel cannot be used, but this product is suitable for such locations. Corrosion caused by high-temperature, high-concentration sulfuric acid is different from normal atmospheric corrosion, and not only ordinary steel but also stainless steel can be severely corroded, with rates exceeding 5mm/year in some cases. You can view the "sulfuric acid immersion test results in sulfuric acid-water system gas-liquid equilibrium" and "corrosion amount of steel in H2SO4" from the PDF download. We encourage you to read it. *For more details, please refer to the PDF materials or feel free to contact us.

• Steel

"S-TEN" is an original sulfuric acid and hydrochloric acid dew point corrosion-resistant steel from Nippon Steel Corporation. It demonstrates excellent performance against sulfuric acid and hydrochloric acid dew point corrosion in flue gas equipment such as coal-fired boilers and waste incineration facilities. It has a proven track record of extensive use in thermal power generation and waste incineration facilities. Its strength, workability, and weldability are comparable to ordinary steel, making it more economical than stainless steel. Our company offers a wide range of processing capabilities, primarily focusing on steel plates. 【Features】 ■ Original from Nippon Steel Corporation ■ Strength, workability, and weldability are equivalent to ordinary steel ■ More economical compared to stainless steel ■ Always in stock for easy availability *For more details, please refer to the PDF document or feel free to contact us.

• Steel

"S-TEN" is a steel plate that excels in resistance to sulfuric and hydrochloric acid dew point corrosion in flue gas treatment equipment such as coal boilers and waste incineration facilities. Its workability and weldability are equivalent to those of ordinary steel. It is widely used in many thermal power generation and waste incineration facilities. We offer "S-TEN1," which is used in areas with high condensation and sulfuric and hydrochloric acid dew point corrosion, and "S-TEN2," which is used in areas where atmospheric corrosion must also be considered in addition to sulfuric acid dew point corrosion. 【Features】 ■ Excellent resistance to sulfuric and hydrochloric acid dew point corrosion in flue gas treatment equipment ■ Workability and weldability are equivalent to ordinary steel ■ More economical compared to stainless steel ■ We provide standard size sales, as well as cutting and bending processing ■ Marking and slitting are also available *For more details, please refer to the PDF document or feel free to contact us.

• Steel

Chikuma Steel Co., Ltd. is a company engaged in the sales business of special steel and ordinary steel, primarily handling products from Nippon Steel for fields such as construction machinery, railway vehicles, architecture, bridges, and environmental equipment. Our company also stocks thick plates of "carbon steel plates for machine structures (S45C)," which are used in various machine parts. These are utilized in applications such as clutch parts, chain parts, umbrella ribs, and washers. *For product specifications, please refer to the inventory dimensions and weight table.

• Other metal materials

Chikuma Steel Co., Ltd. is a company engaged in the sales of special steel and general steel materials, primarily handling products from Nippon Steel Corporation for fields such as construction machinery, railway vehicles, architecture, bridges, and environmental equipment. We stock a wide range of steel plates in various standards and thicknesses in standard sizes. Additionally, we offer a large selection of weather-resistant steel products in our shape steel inventory, providing proactive sales services ranging from technical advice on general products to the development of new applications for materials in new fields. We have established a service system that allows us to cut weather-resistant steel plates, high-tensile steel plates, and others to specified dimensions and shapes using laser cutting, gas cutting, and plasma cutting. Equipped with CAD facilities, we create drawings and perform cutting processes using computers, producing highly accurate products. 【Business Activities】 ■ Sales and processing of special steel and general steel materials ■ Sales of secondary steel products ■ Sales of construction materials ■ Welding and can manufacturing (Laser cutting, plasma cutting, NC cutting, beveling, etc.) *For more details, please refer to our catalog or feel free to contact us.

• Other metal materials

"CORSPACE" is a type of steel that allows for an extended painting cycle compared to ordinary steel, thereby reducing lifecycle costs. It has the function of suppressing corrosion of the steel material in areas where the paint film deteriorates or is thin. It is particularly effective in environments with severe salt damage, making it suitable for conditions where weather-resistant steel bridges cannot be applied. [Features] - Addition of trace amounts of tin significantly reduces corrosion - Effective in coastal areas with severe salt damage - Complies with all JIS standards required for bridges - Capable of producing thick plates comparable to ordinary steel - Various workability such as cutting, bending, and welding is equivalent to ordinary steel *For more details, please refer to the PDF document or feel free to contact us.

• Steel

Chikuma Steel Co., Ltd. is a company engaged in the sales business of special steel and ordinary steel, primarily handling products from Nippon Steel for fields such as construction machinery, railway vehicles, architecture, bridges, and environmental equipment. Our company supplies "stainless steel, aluminum, and titanium" as materials for railway vehicles and various types of buildings. *For details about our products, please contact us directly.*

• Other metal materials