ArcelorMittal Piracicaba steel plant

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ArcelorMittal Piracicaba steel plant (Usina siderúrgica ArcelorMittal Piracicaba (Portuguese)), also known as ArcelorMittal Aços Longos and Dedini Siderúrgica S.A. (predecessor), is a 1100 thousand tonnes per annum (TTPA) electric arc furnace (EAF) steel plant operating in Piracicaba, São Paulo, Brazil.


The map below shows the location of the steel plant in Piracicaba, São Paulo, Brazil.

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  • Location: Av Mal Castelo Branco 101, Jardim Primavera, Piracicaba, Sao Paulo, Brazil[1]
  • Coordinates (WGS 84): -22.698154, -47.657146 (exact)


The ArcelorMittal Piracicaba steel plant was originally founded in 1955 under the name Dedini Siderúrgica S.A. (Dedini Steelworks).[2] In 1994 the Companhia Siderúrgica Belgo-Mineira (Belgo) acquired a 49% stake in the plant[2][3], and three years later Belgo assumed full ownership[2], increasing the plant's annual production from 300,000 to 500,000 tons. In 2004, a second expansion doubled the plant's capacity to more than one million tons per annum[4] with the installation of a new Danieli electric arc furnace and ladle furnace to replace the plant's original furnaces.[5] A series of mergers between 2001 and 2006 resulted in the plant becoming part of the ArcelorMittal group .[4]

The Piracicaba plant is part of ArcelorMittal Brasil's Aços Longos (long steel) division, together with the ArcelorMittal Monlevade steel plant and the ArcelorMittal Juiz de Fora steel plant.[6] ArcelorMittal Piracicaba is Brazil's leading producer of rebar for civil construction[7], and also manufactures specialty products such as threaded rods.[4]

Plant Details

Table 1: General Plant Details

Plant status Start date Workforce size
operating[1] 1955[8] 460[9]

Table 2: Ownership and Parent Company Information

Parent company Parent company PermID Owner Owner company PermID
ArcelorMittal SA [100%][10] 5000030092 [100%] Arcelormittal Brasil SA[10][11][1] 4295859712

Table 3: Process and Products

Steel product category Steel products Steel sector end users ISO 14001 Main production equipment Detailed production equipment
finished rolled[10] rebar, wire rod, threaded rods[12][13] building and infrastructure[1] 2020[14] electric arc furnace (EAF)[15][16] 1 Danieli EAF (130-tonne, 2004)[16]

Table 4: Crude Steel Production Capacities (thousand tonnes per annum):

Electric arc furnace steelmaking capacity Nominal crude steel capacity (total)
1100 TTPA[17] 1100 TTPA

Table 5: Actual Crude Steel Production by Year (thousand tonnes per annum):

Year BOF Production EAF Production OHF Production Total (all routes)
2020 903 TTPA[18] 903 TTPA[18]
2021 992 TTPA[15][19] 992 TTPA[15][19]

Articles and Resources


  1. 1.0 1.1 1.2 1.3 Archived from the original on 2021-12-28. {{cite web}}: Missing or empty |title= (help)
  2. 2.0 2.1 2.2 "Linha do Tempo". ArcelorMittal. Retrieved January 18, 2022.{{cite web}}: CS1 maint: url-status (link)
  3. "ArcelorMittal - Piracicaba, 26 anos". ArcelorMittal. November 6, 2020.{{cite web}}: CS1 maint: url-status (link)
  4. 4.0 4.1 4.2 "Empresa lança a barra roscada de aço". Gazeta de Piracicaba. September 2017.
  5. Germano de Paula, Universidade Federal de Uberlândia (February 2005). "Belgo-Mineira Piracicaba: Turning an old site into a 'greenfield' plant". ResearchGate.{{cite web}}: CS1 maint: url-status (link)
  6. "Pocket Yearbook 2021: A Siderurgia em Números" (PDF). Instituto Aço Brasil. June 2021.{{cite web}}: CS1 maint: url-status (link)
  7. "ArcelorMittal Piracicaba registra crescimento em 2018". Jornal de Piracicaba. April 9, 2019.
  8. Archived from the original on 2022-03-20. {{cite web}}: Missing or empty |title= (help)
  9. Archived from the original on 2022-01-26. {{cite web}}: Missing or empty |title= (help)
  10. 10.0 10.1 10.2 (PDF) Archived from the original (PDF) on 2022-03-18. {{cite web}}: Missing or empty |title= (help)
  11. (PDF) Archived from the original (PDF) on 2021-12-31. {{cite web}}: Missing or empty |title= (help)
  12. Archived from the original on 2022-09-22. {{cite web}}: Missing or empty |title= (help)
  13. Archived from the original on 2022-09-21. {{cite web}}: Missing or empty |title= (help)
  14. Archived from the original on 2021-12-28. {{cite web}}: Missing or empty |title= (help)
  15. 15.0 15.1 15.2 (PDF) {{cite web}}: Missing or empty |title= (help)
  16. 16.0 16.1 Archived from the original on 2022-01-24. {{cite web}}: Missing or empty |title= (help)
  17. (PDF) Archived from the original (PDF) on 2022-09-21. {{cite web}}: Missing or empty |title= (help)
  18. 18.0 18.1 (PDF) Archived from the original (PDF) on 2022-01-20. {{cite web}}: Missing or empty |title= (help)
  19. 19.0 19.1 (PDF) Archived from the original (PDF) on 2022-06-25. {{cite web}}: Missing or empty |title= (help)

External resources

External articles

Additional data

To access additional data, including an interactive map of steel power plants, a downloadable dataset, and summary data, please visit the Global Steel Plant Tracker on the Global Energy Monitor website.