The CSN Energy Business is represented by its holdings in the hydroelectric plants of Itá and Igarapava, in addition to the thermoelectric plant and the top turbine located in the Presidente Vargas Plant, in Volta Redonda (RJ). CSN also has a company that operates in the energy trading business, CSN Energia.

CSN holds 29.50% of Itá Hydroelectric Power Plant; 17.92% of Igarapava Hydroelectric Power Plant; and 100% in thermoelectric plant and the top turbine in PVP. The corporate structure of CSN Energia is composed 99.999% by CSN and 0.001% by Companhia Metalúrgica Prada (CSN‘s subsidiary).

CSN, through CSN Energy, assesses renewable energy projects to increase the group‘s generation capacity, whether treating energy as Input (self-production activity) or treating energy as a business (sales in ACL or in ACR auctions). In addition, CSN develops projects geared towards research and development and the conservation of energy resources (energy efficiency). Learn more about the projects here.

The main difference lies in the ratio of materials used in their composition and in their final resistance. Types CP II E 32 and CP II E 40 have between 6% and 34% slag (blast furnace residue), while CP III 40 RS has a greater content, from 35% to 70% in its composition.
For more details about the products, please go to our cements page.

The lighter or darker color does not affect the quality of the product, being related to the origin of raw materials and additions used. Therefore, we recommend that you use the same brand and type of cement for the entire construction work.

The cement should be stored in a dry, covered and closed place, safe from contact with water floor and walls. We recommend stacking at most 10 cement bags, on a pallet. Otherwise, the grains in the first bags will be hardened and will have to be fluffed before use.

Yes, and you should pay attention to it. We recommend using the bagged product within 90 days after the date of manufacture, respecting the storage conditions.

The beginning of setting (or curing) depends on each type of cement. Cement CP III 40 RS has a drying time of approximately 5 hours, whereas the CP I IE 32 and 40 take approximately 4 hours before it’ll begin to set.

Yes. CSN Cement can be considered the greenest among those produced in Brazil, as it takes advantage of the blast furnace slag (waste from steel making) for its production, which reduces the exploitation of natural reserves of limestone and clay and the amount of CO2 in the atmosphere.

• It prevents cracks due to slow and gradual resistance gains;
• It has lower porosity compared to slag-less cement;
• It has high efficiency in aggressive environments such as sewage, fertilizer warehouses and marine environments;
• It gains continuous resistance against compression even after 28 days;
• It is environmentally sustainable since it reduces the exploitation of natural resources of limestone and clay and the amount of CO2 in the environment.

Yes. More or less water can compromise the behavior of concrete or mortar, directly influencing the resistance to compression. It‘s recommended that you always use the right amount sand and gravel according to the proportion indication.

Yes. You can use it from the foundation to the finishing of your works, observing the mortar‘s drying time. The blast furnace slag used in cement composition results in a high quality material, with a more attractive price.

You must be a legal entity of the construction industry and be registered with CSN to make the purchase. Contact us at sac.cimentos@csn.com.br or at our customer contact center (SAC) – 0800 2828-200 for information about resellers near you.

You must be a legal entity of the construction industry and be registered with CSN. Contact us at vendas.cimentos@csn.com.br or at our contact center (SAC) – 0800 2828-200.

On the CSN website you can find information about all products that the company offers. Click the link related to each product: Hot-rolled, Cold-rolled, Metal Sheets, Pre-painted, Galvanized, Rods, Cement and Chemical Co-products.

Yes. Steel is one of the least harmful raw materials, because it uses ferrous scrap for its production, saving natural resources and energy. It can be used up to 80% scrap as a raw material for the production of rebars and up to 15% for sheet steel. The recycling process reduces energy consumption, disposal of the material in the environment and also helps in the preservation of natural resources, avoiding the extraction of raw materials and CO2 emissions to the atmosphere. Furthermore, many of the products generated during production can be reused to manufacture new materials. The blast furnace slag, for example, is reused for the production of CSN cement.

Yes. It is estimated that each ton of steel produced generates from 500 kg to 600 kg of co-products that can be reused in other segments, such as fine chemicals, agribusiness, aluminum industry, rubber, polymers, leather, metallurgy, cement, and as raw material in other activities. These sub-products include: coal tar, ammonia, crude BTX and sulfur. For more information, visit the link.

CSN has an area called Co-Products and Chemicals which is responsible for the sale of co-products generated from the production of steel. The sale can be made both in the domestic market and to foreign companies. The business unit has great integration and synergy with the Environmental area of CSN, preventing these products from being stored in landfills or discarded in the environment. To contact the co-products and chemicals commercial area of, send a message to produtosnaoaco@csn.com.br or call +55 (11) 3049-7312/7120/7265.

CSN has business contacts according to the area of business/services. Please contact us through this link to get more information.

We are developing a new procedure for the visits to the Plant, aiming to improve the service to our customers. For more information, please contact us at: +55 (24) 3344-5791 – visitas@csn.com.br.

• Shorter time of construction work;
• Greater organization and faster assembly;
• Better use of available space in the work site, avoiding unnecessary buildup of construction debris and materials;
• Possibility of buildings with large spans;
• Tall columns, allowing greater floor area on the floors;
• Cheaper foundations due to the lower weight of the structure;
• Easy to modify in the future (reinforcement, extension);
• Ability to absorb impacts caused by earthquakes and collisions or by natural phenomena that have a low probability of occurrence.

OEM stands for “Original Equipment for Manufacturers.” At CSN, OEM includes materials such as canisters, cylinders, drums, electric motors and agricultural equipment Information related to OEM can be obtained here.

Yes. In order to provide our customers with greater productivity, cost savings and high end product quality, CSN has service centers that perform cutting and bending of sheets and rebars.

You can see the types of cutting services available for each product on the link cutting services. CSN has several highly trained units throughout the country.

To learn more about available cutting services of CSN, visit.

CSN produces iron ore, cassiterite and limestone/dolomite through the companies CSN Mining, Ersa and CSN Arcos, respectively.

CSN Mineração S.A is a mining company that stands as one of the major players in the world. The strong competitive position of CSN Mining is made possible by the large-scale operation and logistic integration, from mine to export. For more information, see.

The complex of Casa de Pedra and Pires are located in the municipality of Congonhas, in Minas Gerais; and the Tecar port terminal is located in the city of Itaguaí, in Rio de Janeiro. Abroad, Congonhas Minérios has commercial offices in Vienna and Hong Kong.

Iron ore is the main raw material for manufacturing steel, which, in its turn, is used in several production sectors, such as automotive, major appliances and construction.

Yes. Iron ore products are basically classified according to the particle size, and are penalized or rewarded in the market based on their chemical characteristics, such as iron and silica. To learn more about the products marketed by CSN Mining, see.

Depending on the iron ore‘s country of destination, the sale is made by one of our sales offices. The Vienna office is responsible for sales in Europe, Middle East and India. The Hong Kong office is responsible for sales in China, Japan, South Korea, Taiwan and other Asian countries. Finally, the sales team installed in Casa de Pedra is responsible for sales to the domestic market. To learn more, see.

Yes. The certified units are: Presidente Vargas Steelworks – UPV (RJ), Casa de Pedra (MG), CSN Porto Real (RJ), CSN Paraná (PR), Arcos (MG), Tecon (RJ) and Prada Distribuição (SP). The other units are working on implementing the environmental management system, and have been following a corporate program for their progressive certification by ISO 14001.

CSN keeps channels of communication, about environmental issues, related to its operations, and they’re always open to the community. The main channels are CSN Green Line (0800 2824440), a national toll-free line, and the email address meio.ambiente@csn.com.br, both open to receive the community’s complaints, suggestions and questions about the company‘s environmental issues. The person who requires the information will receive a formal response from CSN.

Other environmental projects related to communities are conducted by CSN Foundation, whose link can be accessed in this portal.

Yes, all the Supplies areas will use the Ariba tool for its competitive processes.

If your company is still not a commercial Quadrem/Ariba Portal member, please contact the Ariba agent who contacted you previously or through the following means of contact:

E-mail: meio.ambiente@csn.com.br
Telephone numbers:
+55 (21) 3861-6945
+55 (21) 3861-6942
+55 (21) 3861-6939
+55 (21) 3861-6745

To update your bank details and financial contact of your organization, you must first go to the Quotes Portal and follow the tutorial described below:

• Sign in at https://service.ariba.com/ProfileManagement.aw/
• Click on “Company Profile”
• Click on “Requested by Customer” and select “Companhia Siderúrgica Nacional”
• Your registration information will be displayed; just make the necessary changes and click “Send”
• For questions, please contact Ariba Technical Support: 0800 891 3988
  Please note that an illustrated step by step guide is available on CSN’s site:
  https://www.csn.com.br/mantenhaseucadastroatualizado.com.br

CSN (Companhia Siderúrgica Nacional) is the only producer of Steelcolors, but the product is sold by its reseller network, with trained teams for commercial service.

Through the distribution network, the product may be purchased in any amount.

Steelcolors was developed to offer 23 colors, but it is available for immediate purchase only in 4 standard colors (silver, white, blue and red). Custom colors may be developed on request, as long as the amount falls within the minimum volume for production. Request the Color Sampler.

Yes. Re-painting may be required for several reasons. Since this type of paint will dry in the air, it will not have the same performance level of a paint applied and cured thermally in factory, under the process known as coil-coating.

Manufacturers of paints, suppliers for this type of process, are capable of producing paints that are compatible and with the same hue.

For small amounts, intended for retouch, you must take care to use paint that is compatible with the original paint (polyester resin). First test the paint on a small and not-visible area before you begin to paint the desired area.

CSN is not responsible for re-painting and refinishing services, and does not sell the paint.

Steelcolors’ polyester resin paint system is ideal for the application of adhesive films.

Steel is thermally very stable; you can work with it from -50 ºC to + 300 ºC without major changes. However, the paint is limited by the curing temperature in the paint line, that is, 232 ºC.

No, but because its substrate is GALVALUME steel, which is “Energy Star” certified, it has characteristics to improve thermal comfort.

No, but it can be used with products that do.

Because it is a substrate in steel, Steelcolors is incombustible, meaning it’ll not fuel a fire. The steel reaches its melting point at 1200 ºC and the paint has a melting point of 232 ºC.

• Steelcolors can be easily cleaned with water and mild detergent.
• Do not use abrasive products or equipment that may damage the paint.
• It is recommended that you clean it once to twice a year, depending on the location of the building.
• In saline environments, the frequency of cleaning should be higher to remove the salt and sand build up, known as “salt spray.”
• Usually, Steelcolors should receive the same care as refrigerator and car paintings, despite being different paints.
• In the case of dirt of difficult removal, ask for our User Guide, available on our technical and commercial department.

According to salt spray testing (that simulates a saline atmosphere), Steelcolors resists 1,000h.

It is advisable that you use galvanized steel profiles. If another type of metal is used, an insulating protection layer must be applied to the region of bi-metallic contact in order to prevent galvanic corrosion.

It is also recommended that you use components and accessories with a durability compatible with the Steelcolors product, which has Galvalume steel as its base.

In our user guide you can find information on compatible components and accessories. Ask for a copy!