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filename1.htm

January 8, 2024

VIA EDGAR TRANSMISSION

Mr. Ken Schuler

Mr. Craig Arakawa

Ms. Melissa Gilmore

Mr. Kevin Woody

Division of Corporation Finance

Office of Manufacturing

U.S. Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549-4631

 Re: National Steel Company (Companhia Siderúrgica Nacional – CSN)

Form 20-F for the fiscal year ended December 31, 2022

File No. 001-14732

Response
to Staff Comment Letter Dated December 7, 2023

Dear Mr. Schuler, Mr. Arakawa, Ms. Gilmore and Mr. Woody:

Reference is made to the comment letter from the staff (the “Staff”)
of the U.S. Securities and Exchange Commission (the “SEC”) received by National Steel Company (Companhia Siderúrgica
Nacional – CSN) (the “Company” or “CSN”) on December 7, 2023, regarding the Company’s
annual report on Form 20-F for the fiscal year ended December 31, 2022, filed on April 27, 2023 (the “2022 Form 20-F”).
For your convenience, we have reproduced the Staff’s comments in italics and have provided responses immediately below.

The Company will improve its disclosure in accordance with the additional
information provided herein in future filings.

SEC Comment No. 1.

Casa de Pedra Mine, page 32

We note your individual material property disclosure beginning in this
section. Please locate each of your material properties within 1 mile, using an easily recognizable coordinate system to comply with Item
1304(b)(1)(i) of Regulation S-K.

Companhia Siderúrgica Nacional

 1

Av. Brigadeiro Faria Lima, 3400 – 20th Floor

Faria Lima Financial Center

04538-132 – São Paulo – SP

Response to Comment No. 1.

The following map sets forth our material properties
using a coordinate system. The first map presents an overview of our material properties. The second map illustrates Casa de Pedra mine,
Engenho mine and Pires beneficiation plant with local details. The third map illustrates Fernandinho mine with local details.

Companhia Siderúrgica Nacional

 2

Av. Brigadeiro Faria Lima, 3400 – 20th Floor

Faria Lima Financial Center

04538-132 – São Paulo – SP

Companhia Siderúrgica Nacional

 3

Av. Brigadeiro Faria Lima, 3400 – 20th Floor

Faria Lima Financial Center

04538-132 – São Paulo – SP

SEC Comment No. 2.

Our Mining Segment, page 32

We note that you have identified multiple mining properties in your
filing without differentiating between material and non-material properties and without providing or distinguishing between the summary
and individual property disclosures. Please modify your disclosure, as necessary, to identify each of the mining properties as being either
material or not material and include all the information prescribed for summary disclosures in Item 1303(b) of Regulation S-K. Please
include an overview, and a summary tabulation of resources and reserves. The summary disclosures should be clearly identified and
positioned in advance of the individual property disclosures required by Item 1304(b) of Regulation S-K. In addition, please provide the
criteria that you considered in identifying properties as material.

Response to Comment No. 2.

CSN Mineração owns the Casa de Pedra, Engenho and Fernandinho
mines, which represent CSN’s mining rights that comprise the material properties of CSN’s mining activity.
CSN Mineração also integrates its mining complex with the following non-material properties: Pires Beneficiation Plant and
Presidente Vargas Steelworks.

Casa de Pedra mining complex is located in the southwest portion of the
Iron Quadrangle, in the Congonhas municipality, State of Minas Gerais. Casa de Pedra mining complex and mining concessions are located
in a 4,702 hectares property owned by CSN Mineração. The key tenement is no. 043.306/1956 and occupies 2,516 hectares where
the Casa de Pedra mine is mainly located.

Fernandinho mine is located in the municipality of Rio Acima, State of
Minas Gerais. Currently, this mining complex is not operating, and future operations will depend on detailed geological studies. Fernandinho
mine’s activities were suspended in May 2015. Since then, no work has been carried out to evaluate the mineral resources and mineral
reserves.

The followings tables set forth the mineral reserves of each of Casa de
Pedra mine and Engenho mine:

    Mineral Reserves Table (As of December 31, 2022)

    TOTAL Reserves 2022 - Casa de Pedra Mine

    RESERVES
    VOLUME (* 1000 m3)
    MASS (*1000 ton)
    Fe%
    SiO2%
    Al2O3%
    Mn%
    P%
    LOI%

    Proven
    141,215
    382,472
    43.43
    34.47
    0.81
    0.45
    0.05
    1.74

    Probable
    535,779
    1,441,539
    40.58
    38.05
    1.03
    0.41
    0.05
    1.98

    TOTAL
    676,994
    1,824,011
    41.21
    37.26
    0.98
    0.42
    0.05
    1.93

Companhia Siderúrgica Nacional

 4

Av. Brigadeiro Faria Lima, 3400 – 20th Floor

Faria Lima Financial Center

04538-132 – São Paulo – SP

    Mineral Reserves Table (As of December 31, 2022)

    TOTAL Reserves 2022 – Engenho Mine

    RESERVES
    VOLUME (* 1000 m3)
    MASS (*1000 ton)
    Fe%
    SiO2%
    Al2O3%
    Mn%
    P%
    LOI%

    Proven
    70,955
    192,625
    39.79
    40.80
    0.68
    0.24
    0.04
    1.31

    Probable
    11,529
    31,374
    46.29
    28.85
    1.71
    0.59
    0.05
    2.30

    TOTAL
    82,484
    223,999
    40.67
    39.17
    0.82
    0.29
    0.04
    1.44

    Mineral Reserves Table (As of December 31, 2022)

    TOTAL Reserves 2022 – Total (Casa de Pedra Mine and Engenho Mine)

    RESERVES
    VOLUME (* 1000 m3)
    MASS (*1000 ton)
    Fe%
    SiO2%
    Al2O3%
    Mn%
    P%
    LOI%

    Proven
    212,171
    575,097
    39.79
    40.80
    0.68
    0.24
    0.04
    1.31

    Probable
    547,307
    1,472,913
    46.29
    28.85
    1.71
    0.59
    0.05
    2.30

    TOTAL
    759,478
    2,048,010
    40.67
    39.17
    0.82
    0.29
    0.04
    1.44

SEC Comment No. 3.

Mineral Resources, page 33

We understand that all mineral reserves and mineral resources are presented
on a 100% ownership basis, though you only own 78.2% of CSN Mineração. Please modify your filing and report all your resources
and reserves that are attributable to your ownership interest as of December 31, 2022. See Item 1303(b)(3)(iii) of Regulation S-K.

Response to Comment No. 3.

CSN’s ownership in its subsidiary CSN Mineração
as of December 31, 2022 was 79.75%. The following table sets forth the mineral reserves and mineral resources that are attributable to
CSN’s ownership interest as of December 31, 2022:

    Mineral Reserves Table (As of December 31, 2022)

    CSN Participation of Reserves 2022 – Total (Casa de Pedra mine and Engenho Mine) – 79.75%

    RESERVES
    VOLUME (* 1000 m3)
    MASS (*1000 ton)
    Fe%
    SiO2%
    Al2O3%
    Mn%
    P%
    LOI%

    Proven
    169,206
    458,640
    39.79
    40.80
    0.68
    0.24
    0.04
    1.31

    Probable
    436,477
    1,174,648
    46.29
    28.85
    1.71
    0.59
    0.05
    2.30

    TOTAL
    605,684
    1,633,288
    40.67
    39.17
    0.82
    0.29
    0.04
    1.44

Companhia Siderúrgica Nacional

 5

Av. Brigadeiro Faria Lima, 3400 – 20th Floor

Faria Lima Financial Center

04538-132 – São Paulo – SP

SEC Comment No. 4.

Mineral Resources, page 33

Please disclose all your mineral resource summaries
exclusive of reserves at the end of the most recently completed fiscal year (December 31, 2022), as required by Item 1303(b)(3)(ii) of
Regulation S-K.

Response to Comment No. 4.

The following tables set forth CSN’s total mineral resources that
are attributable to its ownership interest as of December 31, 2022. For this item there was no distinction between Casa de Pedra mine
and Engenho mine.

    Mineral Resource Table – Exclusive of Reserves (As of December 31, 2022)

    TOTAL RESOURCES 2022

    RESOURCE
    VOLUME (* 1000 m3)
    MASS (*1000 ton)
    Fe%
    SiO2%
    Al2O3%
    Mn%
    P%
    LOI%

    MEASURED
    155,814
    431,050
    39.80
    36.63
    0.79
    0.36
    0.05
    1.69

    INDICATED
    533,204
    1,517,200
    37.60
    38.67
    0.88
    0.37
    0.05
    2.18

    INFERRED
    561,399
    1,723,600
    37.10
    39.82
    0.69
    0.31
    0.05
    2.90

    TOTAL
    1,250,418
    3,671,850
    37.62
    38.97
    0.78
    0.34
    0.05
    2.46

    Mineral Resource Table – Exclusive of Reserves (As of December 31, 2022)

    CSN PARTICIPATION OF TOTAL RESOURCES 2022 – 79.75%

    RESOURCE
    VOLUME (* 1000 m3)
    MASS (*1000 ton)
    Fe%
    SiO2%
    Al2O3%
    Mn%
    P%
    LOI%

    MEASURED
    124,262
    343,762
    39.80
    36.63
    0.79
    0.36
    0.05
    1.69

    INDICATED
    425,230
    1,209,967
    37.60
    38.67
    0.88
    0.37
    0.05
    2.18

    INFERRED
    447,716
    1,374,571
    37.10
    39.82
    0.69
    0.31
    0.05
    2.90

    TOTAL
    997,208
    2,928,300
    37.62
    38.97
    0.78
    0.34
    0.05
    2.46

    Mineral Reserves Table (As of December 31, 2022)

    TOTAL RESERVES 2022

    RESERVES
    VOLUME (* 1000 m3)
    MASS (*1000 ton)
    Fe%
    SiO2%
    Al2O3%
    Mn%
    P%
    LOI%

    PROVEN
    45,428
    122,510
    39.40
    40.80
    0.68
    0.24
    0.04
    1.31

    PROBABLE
    714,001
    1,925,500
    41.07
    37.85
    1.04
    0.42
    0.05
    1.99

    TOTAL
    759,429
    2,048,010
    40.97
    38.03
    1.02
    0.40
    0.05
    1.95

Companhia Siderúrgica Nacional

 6

Av. Brigadeiro Faria Lima, 3400 – 20th Floor

Faria Lima Financial Center

04538-132 – São Paulo – SP

    Mineral Reserves Table (As of December 31, 2022)

    CSN PARTICIPATION OF TOTAL RESERVES 2022 – 79.75%

    RESERVES
    VOLUME (* 1000 m3)
    MASS (*1000 ton)
    Fe%
    SiO2%
    Al2O3%
    Mn%
    P%
    LOI%

    PROVEN
    36,229
    97,702
    39.40
    40.80
    0.68
    0.24
    0.04
    1.31

    PROBABLE
    569,416
    1,535,586
    41.07
    37.85
    1.04
    0.42
    0.05
    1.99

    TOTAL
    605,645
    1,633,288
    40.97
    38.03
    1.02
    0.40
    0.05
    1.95

SEC Comment No. 5.

Mineral Resources, page 33

Please include the commodity price used, metallurgical
recovery, and the cutoff grade with all your resource and reserve disclosures as required by Item 1303(b)(3) of Regulation S-K.

Response to Comment No. 5.

The following table sets forth the reasonable prospects for eventual economic
extraction (RPEEE) pit optimization parameters:

Companhia Siderúrgica Nacional

 7

Av. Brigadeiro Faria Lima, 3400 – 20th Floor

Faria Lima Financial Center

04538-132 – São Paulo – SP

The following table sets forth the reserves pit optimization parameters:

The economic cutoff grade to decide whether a block should be
mined or left in-situ was calculated by the NPVS Software of Datamine. The reserves economic cutoff is calculated at 22.40%.

Companhia Siderúrgica Nacional

 8

Av. Brigadeiro Faria Lima, 3400 – 20th Floor

Faria Lima Financial Center

04538-132 – São Paulo – SP

SEC Comment No. 6.

Mineral Reserves, page 36

Please modify your filing and provide an updated reconciliation
with depletion due to mining activities for your resources/reserves as reported this year compared to last year, as required by Item 1304(e)
of Regulation S-K.

Response to Comment No. 6.

The following chart sets forth the depletion
of our mineral reserves:

The following table sets forth the reconciliation with depletion due to
mining activities for CSN Mineração’s resources and reserves:

    2021
    Tonnage (Mt)
    Fe (%)

    Proven
    152.9
    42.49

    Probable
    1,925.5
    41.07

    Total in 2021
    2,078.4
    41.17

    Mineral Reserves Table (As of December 31, 2022)

    CSN Mineração

    TOTAL Reserves 2022 - Total

    RESOURCE
    VOLUME (* 1000 m3)
    MASS (*1000 ton)
    Fe%
    SiO2%
    Al2O3%
    Mn%
    P%
    LOI%

    Proven
    45,428
    122,510
    39.40
    40.80
    0.68
    0.24
    0.04
    1.31

    Probable
    714,001
    1,925,500
    41.07
    37.85
    1.04
    0.42
    0.05
    1.99

    TOTAL
    759,429
    2,048,010
    40.97
    38.03
    1.02
    0.40
    0.05
    1.95

Companhia Siderúrgica Nacional

 9

Av. Brigadeiro Faria Lima, 3400 – 20th Floor

Faria Lima Financial Center

04538-132 – São Paulo – SP

The following table sets forth the reconciliation with depletion due to
mining activities for CSN’s ownership interest in CSN Mineração’s resources and reserves:

    Mineral Reserves Table (As of December 31, 2022)

    CSN Participation – 79.75%

    TOTAL Reserves 2022 - Total

    RESOURCE
    VOLUME (* 1000 m3)
    MASS (*1000 ton)
    Fe%
    SiO2%
    Al2O3%
    Mn%
    P%
    LOI%

    Proven
    36,229
    97,702
    39.40
    40.80
    0.68
    0.24
    0.04
    1.31

    Probable
    569,416
    1,535,586
    41.07
    37.85
    1.04
    0.42
    0.05
    1.99

    TOTAL
    605,645
    1,633,288
    40.97
    38.03
    1.02
    0.40
    0.05
    1.95

SEC Comment No. 7.

Mineral Reserves, page 36

Please state the resources and reserves
for both the Engenho and Fernandinho mines.

Response to Comment No. 7.

The following tables set forth the mineral resources and mineral reserves
for Engenho mine:

    Engenho Mineral Resource Table (As of December 31, 2022)

    TOTAL RESOURCES 2022

    RESOURCE
    VOLUME (* 1000 m3)
    MASS (*1000 ton)
    Fe%
    SiO2%
    Al2O3%
    Mn%
    P%
    LOI%

    MEASURED
    90,220
    223,614
    40.23
    40.10
    0.66
    0.27
    0.04
    1.29

    INDICATED
    23,075
    55,450
    46.88
    29.14
    1.17
    0.55
    0.04
    1.62

    INFERRED
    7,703
    13,671
    43.45
    30.84
    2.09
    1.19
    0.06
    2.96

    TOTAL
    120,998
    292,735
    41.64
    37.60
    0.82
    0.37
    0.04
    1.43

    Mineral Reserves Table (As of December 31, 2022)

    TOTAL Reserves 2022 – Engenho Mine

    Reserves
    VOLUME (* 1000 m3)
    MASS (*1000 ton)
    Fe%
    SiO2%
    Al2O3%
    Mn%
    P%
    LOI%

    Proven
    70,955
    192,625
    39.79
    40.80
    0.68
    0.24
    0.04
    1.31

    Probable
    11,529
    31,374
    46.29
    28.85
    1.71
    0.59
    0.05
    2.30

    TOTAL
    82,484
    223,999
    40.67
    39.17
    0.82
    0.29
    0.04
    1.44

Companhia Siderúrgica Nacional

 10

Av. Brigadeiro Faria Lima, 3400 – 20th Floor

Faria Lima Financial Center

04538-132 – São Paulo – SP

Fernandinho mine’s activities were suspended in May 2015. Since then,
no work has been carried out to evaluate the mineral resources and mineral reserves. The following table sets forth the mineral resources
and mineral reserves for Fernandinho mine as last measured:

    Fernandinho Mineral Resource Table (As of September 2, 2015)

    TOTAL RESOURCES 2022

    RESOURCE
    MASS (*1000 ton)
    Fe%
    SiO2%
    Al2O3%
    Mn%
    P%
    LOI%

    MEASURED
    53
    39.82
    39.87
    0.62
    0.05
    0.055
    2.35

    INDICATED
    62
    39.23
    41.04
    0.50
    0.05
    0.050
    2.17

    INFERRED
    63
    38.58
    41.86
    0.50
    0.07
    0.048
    2.22

    TOTAL
    178
    39.18
    40.98
    0.54
    0.06
    0.05
    2.24

SEC Comment No. 8.

Elizabeth Mines, page 45

Please revise your filing to report each individual property’s
production by product such as iron ore or limestone, etc. as required by Item 1303(b)(2)(i) of Regulation S-K.

Response to Comment No. 8.

CSN’s Elizabeth cement property
includes an open pit mine of limestone, clay and sand. The mining rights over the mineral reserves area comprises 746.73 hectares, as
required by the Brazilian National Mining Agency (Agência Nacional de Mineração – ANM). The mining project
is developed in three phases, with four pits. The mining process is performed in the following sequence: (i) cleaning of the area; (ii)
removal of mining waste; (iii) disassembling; (iv) crushing; and (v) transport. The deposit is exploited mechanically in an open pit.
The rocks are dismantled by explosives, which are delivered o