1) What are the CSN assets in the electricity sector?

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.

2) What is the percentage held by CSN in the Energy assets?

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).

3) What are CSN’s projects in the electricity industry?

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.


1. What is the difference between CSN‘s types of cement?

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.

2. Does the color of cement have any influence on its quality?

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.

3. How should I store the cement?

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.

4. Does the cement have an expiration date?

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.

5. What is the CSN cement drying time?

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.

6. Is the CSN cement environmentally sustainable?

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.

7. What is the advantage of having slag in the cement composition?
  • 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.
8. Does the amount of sand and water used in the mortar mixture influence its resistance?

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.

9. Can I use CSN cement in all works?

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.

10. need to buy cement for a construction job here at my house. Can I buy it directly from CSN?

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.

11. What can I do to be a reseller of CSN Cement?

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.


1. Where can I find information on CSN‘s products?

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.

2. Is steel an environmentally sustainable product?

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.

3. Does steel generate co-products during its production?

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.

4. Is it possible to purchase sub-products obtained during the production of steel?

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.

5. Does CSN have a business contact?

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

6. Is it possible to schedule a visit to the Presidente Vargas Steelworks? What is the procedure?

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.

7. What are the advantages of building with steel?
  • 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.
8. What does the term ‘OEM‘ mean?

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.

9. Does CSN have a service center for cutting coils and sheets?

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.

1. Are there performance differences between the Normal Crystal (CN) and the Minimized Crystal (MI) among the galvanized steel sheets?

No. The difference between Normal Crystal and Minimized Crystal is only visual. If they have equivalent layers (same amount of zinc per square meter of surface), generally, they will have equal performance. The types of finishing can be viewed through this link.

2. For flat steel, for example in sheets used in construction, what is the difference between the dimensional tolerances "Mean to High" and "Mean to Low"?

Mean to High may be understood as the thickness variation in the upper range, for example, when it may be up to 5% thicker than the predetermined size; mean to Low refers to the change related to the lower range. There may also be variations called “symmetrical,” with size tolerances both in the upper and lower ranges of the sheets.

1. What are the advantages of using steel packaging?
  • It’s made of recyclable materials;
  • It has magnetic properties that make it for easier recovery and recycling;
  • It protects and preserves food better;
  • Longer shelf life for food at room temperature, including meat and other groceries;
  • Vitamins and minerals are retained and the taste remains fresh for longer.
2. How should I store steel cans?

Cans must be kept in clean, dry and well ventilated places, sheltered from sunlight. Despite having their own protection coating that slows down the aging process, oxidation (or rust) is a natural process that occurs with metal packaging. Therefore, inappropriate conditions of humidity and temperature must be avoided in order to prolong the life of the stored product.

3. If I cut myself with a steel package, am I at risk of contracting a disease, like tetanus?

It depends. Tetanus is a disease caused by microbes present on many surfaces. Therefore, any contaminated material (metal or not) can cause tetanus.

4. How are canned foods made?

The sequence of steps and the time required for processing may differ according to the kind of food, since some are more perishable and sensitive to temperature variations than others. You can view the packaging process by clicking this link.

5. Is the durability of canned food the same as of food stored in other types of packaging materials?

The durability of canned food will depend on the type of food. Because they are hermetically sealed and cooked within the can, they have higher durability without the need for preservatives. Provided they remain sealed, canned food have their taste and nutritional properties preserved for longer periods of time at room temperature. Moreover, canning food is safer since it has greater resistance and prevents light and oxygen from entering, preserving the product for longer on shelves or at home. Get more information by clicking this link.

6. Do dented cans compromise the quality of the food?

The food packages are coated with an elastic protective layer. Even when they are dented, there is no compromising of food quality. However, it is recommended that you do not to consume food from perforated or stuffed cans, since they indicate a failure in the product processing.


1. What are the mining activities performed by CSN?

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

2. What is CSN Mineração S.A?

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.

3. Where does CSN Mining operate?

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.

4. What is iron ore used for?

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.

5. Are there different types of iron ore?

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.

6. How can I buy iron ore from CSN?

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.


1. Is CSN certified by ISO 14001?

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.

2. Does CSN keep a communication channel with the community?

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.


Do all areas of supplies use the Ariba tool?

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

I haven’t joined yet, how can I contact the Ariba team?

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


Please contact your buyer in order to answer your questions.


In this case, please contact GETI and ask for:
Larissa Moore Alves – larissa.alves@csn.com.br
Camila Brito – camila.oliveira@csn.com.br


The first thing you should do in this case is make sure that the NF and XML were sent to nfe@quadrem.net, as directed by the request text.

If case the Tax Receipt does not appear on the website, you must contact GETI and talk to:

Larissa Moore Alves – larissa.alves@csn.com.br


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:


When the supplier charges a particular invoice for late payment, it is important to note whether it considered the concentrated due date (CSN only makes payments on concentrated dates: the 10th, 20th and 30th). If you still have questions, please ask the supplier to contact the CSN accounts payable via email at contasapagar@csn.com.br.


Please contact your buyer in order to have your questions answered.


If you identify that you have your debts reduced from your payments, you should refer to the field “buyer notes” to learn the values and what is it about.
If you still have questions, please contact CSN accounts payable via email at contasapagar@csn.com.br


Only CSN provides the payment in advance of receivables on Mondays, Wednesdays and Fridays. The other group companies do not offer this service.
All invoices negotiated by the supplier with the bank are identified in the “buyer notes” SLIP: Debtor Risk


Invoices with a “provided” status are with blocked payment; in the field “buyer notes” the supplier will be able to see the reason for the block. If the reason is ‘”core block”, contact the buyer/counterpart and/or speak directly with the third-party management by phone at +55 (24) 3344-5524 and +55 (24) 3344-4539, and send the pending documentation by email at nucleo@csn.com.br.


To track your open and paid invoices from all CSN Group companies, follow the tutorial described below:

  • Sign in at https://supplycentre.quadrem.net;
  • In order to check an individual tax receipt, click on “Search,” “Document,” select “Payment Notice” and in the field “Fiscal Receipt Number,” enter the number of the desired receipt, then click on “Search.”
  • To consult several receipts by payment period or status, click “Invoicing,” “‘Remittance Advice Report,” enter the desired status or period, and then click on “Search.”
  • If you have questions, please contact Ariba Technical Support: 0800 891 3988.

An illustrated tutorial for Invoicing Payment Notice search is available on Quadrem portal: https://connect.ariba.com/quadremhelp.


1.Where can I buy Steelcolors®?

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.

2. What is the minimum amount for purchase?

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

3. Can the Steelcolors® be purchased in the color I want?

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.

4. Can Steelcolors® be re-painted or refinished?

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.

5. Can stickers be applied to Steelcolors®?

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

6. What temperatures may Steelcolors® be exposed to?

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.

7. Does Steelcolors® work as a thermal insulator?

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

8. Does Steelcolors® work as an acoustic insulator?

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

9. What does it happen to Steelcolors® in a fire?

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.

10. How is the maintenance of Steelcolors® carried out?
  • 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.
11. Does Steelcolors® tolerate saline environments?

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

12. What material should be used for Steelcolors® auxiliary structure?

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!

Last update on November 20, 2020.

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