クマガイ特殊鋼 List of Products and Services

We would like to introduce the "mild steel" handled by Kumagai Special Steel Co., Ltd. Unlike special steels such as high-strength steel, it is low carbon steel, which means it has low hardness, is easy to process and weld, and is inexpensive and easy to supply in large quantities. Its wear resistance and corrosion resistance are inferior compared to special steels, so combining it with special steels expands its possibilities. 【Product Overview】 ■ Product Name: SS400, SPHC, SPHC-P ■ Standard Sizes - Plate Thickness: 1.6 to 150 - Dimensions: 1219×2438, 1524×3048, 1524×6096, 2000×6096 *For more details, please refer to the PDF document or feel free to contact us.

• Steel

We would like to introduce the "Hot Pressed Steel Materials" that we handle. These components can be freely designed, combining both aesthetics and structure. While demonstrating originality, they significantly reduce cutting and welding processes, leading to improved yield and reduced processing time. We can accommodate various materials such as ordinary steel, carbon steel, high-strength steel, and stainless steel. Please feel free to consult us when you need assistance. 【Features】 ■ Free design is possible ■ Significant reduction in cutting and welding processes ■ Improved yield and reduced processing time are expected *For more details, please refer to the PDF document or feel free to contact us.

• Special Steel

"SC・SCM" is a carbon steel plate for mechanical structures that improves durability and machining accuracy through enhanced hardness characteristics due to heat treatment, and also contributes to thin plate applications. It can be used for general industrial machinery, industrial vehicle parts, and screen materials. This steel is suitable for machine parts such as shafts and pins that require durability and precision. Please feel free to consult us when you need assistance. 【Features】 ■ A wide variety of types and sizes ■ Clear component specifications according to JIS standards ■ Ideal for applications requiring machining accuracy, strength, and thin plates *For more details, please refer to the PDF materials or feel free to contact us.

• Special Steel

"SB" is a pressure vessel and boiler steel plate that prevents graphitization at high temperatures and maintains strength. It is a carbon steel suitable for components used at temperatures above room temperature. It is used in applications such as thick plates for boilers and pressure vessels. Our company offers one-stop services for machining, bending, and welding. We provide cutting and processing proposals tailored to your intended use and material. 【Lineup】 ■SB410 ■SB450 ■SB480 ■SB450M ■SB480M *For more details, please refer to the PDF document or feel free to contact us.

• Special Steel

"CORSPACE" is a steel that extends the painting cycle and is effective for bridges, cranes, and building materials in coastal areas with high salt damage. It contains a small amount of tin (Sn), which significantly suppresses the corrosion of the steel compared to ordinary steel. By extending the painting cycle, it reduces maintenance costs and environmental impact. It addresses issues such as rust from paint pinholes and deterioration, as well as rust from sharp edges of components, which are common problems with ordinary steel. 【Features】 ■ Effective in coastal areas with severe salt damage ■ Solves issues associated with ordinary steel ■ Complies with all JIS standards required for bridges ■ Listed as "tin-added steel" in the "Materials Used" section of the "Bridge Structure Design and Construction Guidelines" published by Metropolitan Expressway Company Limited in June 2015 *For more details, please refer to the PDF document or feel free to contact us.

• Special Steel

"NM-13MN" is a non-magnetic, impact-resistant wear-resistant steel plate known as Hyman steel or high manganese steel, which hardens upon impact. It is more wear-resistant than stainless steel and can be procured at a lower cost. It is used for shot machine linings, safes, and crushers, among other applications, and due to its non-magnetic properties, it is also used in components for linear motor cars and electronic equipment. 【Features】 ■ Steel material with work hardening and non-magnetic properties ■ Capable of handling difficult processing ■ Usable for a wide range of applications *For more details, please refer to the PDF document or feel free to contact us.

• Special Steel

"COR-TEN" is a weather-resistant steel plate that protects the base material with its surface rust and suppresses the progression of rust. With excellent weather resistance, paintability, and weldability, it features a subdued color tone of rust that enhances its aesthetic effect. This steel material has the characteristic of preventing rust with rust itself. We offer a wide variety of shape steel, including channel steel, H-beams, flat steel, and angle steel. Please feel free to consult us when you need assistance. 【Features】 ■ Reduces the weight of steel material due to high strength at room and high temperatures ■ Can be used unpainted due to excellent weather resistance ■ Reduces repainting costs, lowering lifecycle costs and environmental impact ■ Enhances aesthetic effect with the subdued color tone of protective rust ■ Easily weldable by any method, including manual welding *For more details, please refer to the PDF document or feel free to contact us.

• Special Steel

"S-TEN" is a steel plate that exhibits excellent performance in sulfuric acid and hydrochloric acid dew point corrosion in flue gas equipment such as coal-fired boilers and waste incineration facilities. We offer two specifications suitable for different environments: "S-TEN1" for use in ambient conditions (below 300°C) and "S-TEN2" for use in high-temperature environments (approximately 300°C to 500°C). It is also effective against sulfuric acid and hydrochloric acid corrosion in hydrochloric acid pickling tanks and industrial sulfuric acid tanks, with strength, workability, and weldability comparable to ordinary steel and more economical than stainless steel. 【Features of S-TEN1 and S-TEN2】 ■ More economical compared to stainless steel ■ A wide range of products including hot-rolled steel plates, cold-rolled steel plates, steel pipes, and welding materials ■ Strength, workability, and weldability are equivalent to ordinary steel *For more details, please refer to the PDF document or feel free to contact us.

• Special Steel

"ABREX" is a wear-resistant steel plate effective for components subjected to severe abrasion, such as construction machinery and factory equipment. It has 2 to 5 times the wear resistance compared to mild steel, ensuring a long lifespan. It is a special steel that allows for weight reduction and has excellent weldability. With excellent machinability and a wide variety of specifications and sizes, it can be utilized for various applications. Please feel free to consult us when you need assistance. 【Features】 ■ Excellent wear resistance ■ High weldability ■ Abundant specifications and sizes ■ Good machinability *For more details, please refer to the PDF document or feel free to contact us.

• Special Steel

"WEL-TEN" is a high-tensile steel plate that excels in corrosion resistance and is less prone to rust even in environments exposed to rain and wind, extending the product's lifecycle in an economical and eco-friendly manner. It can be used in a wide range of applications including pressure vessels, heavy oil and crude oil tanks, penstocks, bridges, steel frames, construction machinery, and industrial machinery. It can be cut under conditions similar to those of ordinary steel, and welding can also be performed using the customer's existing equipment. [Features] ■ Lightweight ■ Long lifespan ■ Cost reduction *For more details, please refer to the PDF materials or feel free to contact us.

• Special Steel

"WEL-TEN(R)" is a steel material that is stronger in tension and has high strength compared to ordinary steel SS400. It also excels in corrosion resistance, making it less prone to rust even in environments exposed to rain and wind, thereby extending the product's lifecycle and being economical. It is used in a wide range of applications including pressure vessels, heavy oil and crude oil tanks, penstocks, bridges, steel frames, construction machinery, and industrial machinery. [Features] ■ Can be cut, welded, and bent just like ordinary steel ■ Strong in tension and hard ■ Achieves over 20% weight reduction *For more details, please download the PDF or feel free to contact us.

• Steel