Gerdau
A Brazilian steel producer and recycler focused on long steel, special steel, construction products, and related industrial materials. Gerdau is a Brazilian multinational steel producer and one of the world's major suppliers of long steel products, specialty steel and iron ore.
Last updated November 4, 2026
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Overview
Gerdau S.A. is a Brazilian steel producer whose roots date to a nail-making business established by German immigrant João Gerdau in Rio Grande do Sul in 1901. From that initial manufacturing operation, the company developed into a multinational steel group serving construction, infrastructure, industrial manufacturing, automotive, agricultural, energy, and other end markets. Its principal business is long steel, including reinforcing bar, structural products, wire rod, merchant bar, and related construction steel. It also produces special steel for demanding industrial and automotive applications, as well as selected flat-steel and downstream products through its operating businesses. A defining feature of Gerdau's development was vertical integration into steelmaking. The original nail business encountered difficulty obtaining raw material after the Second World War, prompting the family to acquire a steel mill in 1948. The company later expanded through electric-arc-furnace mini-mills, integrated facilities, direct-reduced-iron operations, scrap collection, and downstream fabrication. This operating model gave Gerdau access to recycled ferrous scrap while allowing it to serve regional markets with relatively flexible production assets. The company states that recycled scrap accounts for a substantial majority of its steel production; reference material for 2023 places the share at approximately 71 percent. The business expanded beyond Brazil during the late twentieth century, first entering Canada through Courtice Steel in 1989 and then establishing a major United States presence through the acquisition of AmeriSteel in 1999. Further North American purchases, including North Star Steel, Chaparral Steel, MacSteel, and Tamco, broadened its product and geographic footprint. Gerdau subsequently reshaped the portfolio through divestments of selected North American, Indian, Colombian, and Dominican Republic assets, while continuing to invest in scrap supply, special steel, technology, and higher-value industrial applications. Gerdau is one of the largest long-steel producers in the Americas. Reference material identifies approximately 13 million tons of production in 2023 and places Brazil and North America at roughly 39 percent each of sales. The company operates a mixture of mini-mills, integrated mills, and direct-reduced-iron plants. Its commercial proposition combines regional manufacturing, recycled-material expertise, steel distribution, and products engineered for construction and industrial customers. Gerdau has also pursued innovation outside conventional steel, including Gerdau Graphene, a venture formed with the University of Manchester's Graphene Engineering and Innovation Centre to develop graphene-enhanced additives and materials. The company remains publicly listed, although control is concentrated among the Gerdau Johannpeter family. Its history includes substantial acquisition-led growth, portfolio rationalization, and a continuing emphasis on lower-carbon electric-arc-furnace production and circular use of scrap. It has also faced significant legal controversy: Brazilian authorities investigated alleged tax fraud, bribery, money laundering, and influence peddling in the Operation Zealots matter, and a shareholder settlement was reported in 2017. Gerdau continues to operate as an active international steel group headquartered in São Paulo.
History
Gerdau traces its origins to Pontas de Paris, a nail manufacturer founded by João Gerdau in Brazil in 1901. João had arrived in Rio Grande do Sul from Germany in 1869. Leadership later passed to his son Hugo Gerdau and then to Hugo's son-in-law Curt Johannpeter. The business's move into steelmaking was driven by supply security: after the Second World War, the nail operation struggled to obtain suitable raw material, so the company acquired a steel mill in 1948. The mill expanded over the following two decades. When capacity became constrained, Gerdau acquired a São Paulo mini-mill in 1967. The company adopted the name Metalúrgica Gerdau S.A. in 1969 and became publicly listed in Brazil in 1970. During the 1980s it purchased additional mills, including assets associated with the privatization and restructuring of Brazil's state steel sector. By the end of that decade, it held a major position in Brazilian long steel, although the scale of its acquisitions attracted regulatory attention. Curt Johannpeter died in 1983, after which his sons assumed management responsibilities. Internationalization began in Canada with the 1989 acquisition of Courtice Steel. Gerdau entered the United States in 1999 by acquiring a 75 percent interest in AmeriSteel from Kyoei Steel. Its American depositary receipts were listed on the New York Stock Exchange in the same year. In 2002, Courtice Steel and AmeriSteel were combined through Co-Steel, later renamed AmeriSteel. Gerdau continued expanding in North America with the purchase of North Star Steel in 2004, Chaparral Steel in 2007, MacSteel in 2008, and Tamco in 2010. It took full ownership of AmeriSteel in 2010. In Brazil and the Caribbean, the group expanded through acquisitions including COSIGUA and related companies. In the Dominican Republic, it bought a substantial stake in Industrias Nacionales, or INCA, in 2007; INCA later combined with Metaldom in 2014 to form Gerdau Metaldom. Gerdau also pursued innovation through Gerdau Graphene, established in 2019 with the University of Manchester's Graphene Engineering and Innovation Centre. The 2010s and 2020s brought portfolio discipline as well as expansion. Gerdau sold selected North American facilities to Optimus Steel and Commercial Metals Company, exited India in 2019, acquired Silat in 2020, and later sold its Colombian and Dominican Republic assets. Its acquisition of Dale's Recycling in 2024 reinforced access to automotive scrap. In 2025 it bought minority interests in Gerdau Summit from its Japanese partners. Today, Gerdau combines mini-mills, integrated mills, direct-reduced-iron plants, scrap collection, and downstream operations. Its steel is sold primarily in Brazil and North America, with additional Latin American and Asian activities. The company remains controlled by the Gerdau Johannpeter family while operating as a publicly traded steel group.
- 2024
Portfolio restructuring continues
[1]Gerdau sells Colombian and Dominican Republic assets and acquires Dale's Recycling in the United States.
- 2020
Silat acquired
[1]Gerdau purchases Siderúrgica Latino Americana.
- 2019
Gerdau Graphene formed
[1]Gerdau launches a graphene-materials venture with the University of Manchester's GEIC.
- 2018
Gustavo Werneck becomes chief executive
[4]Gustavo Werneck succeeded André Gerdau Johannpeter as chief executive.
- 2008
MacSteel acquired
[1]The company expands its special-steel and North American operations through the MacSteel acquisition.
- 2007
Chaparral Steel and INCA transactions
[1]Gerdau acquires Chaparral Steel and takes a significant stake in Dominican producer INCA.
- 2007
Chaparral Steel acquisition
[3]The acquisition of Chaparral Steel expanded Gerdau's North American structural-steel and specialty long-steel capabilities.
- 2004
North Star Steel acquired
[1]Gerdau purchases North Star Steel from Cargill.
- 1999
North American expansion and NYSE ADR listing
[1]Gerdau acquires a majority stake in AmeriSteel and lists American depositary receipts in New York.
- 1999
Expansion into the United States
[3]Gerdau acquired a controlling interest in AmeriSteel, establishing a major platform in the North American long-steel market.
Products and positioning
A large Americas-focused steel producer differentiated by long-steel expertise, electric-arc-furnace production, scrap recycling, regional manufacturing, and industrial product development. A large, multinational, recycling-oriented steel producer serving construction, infrastructure, automotive and industrial markets, with a strong presence in the Americas. A large, multinational, recycling-oriented steel producer serving construction, infrastructure, automotive and industrial markets, differentiated by long-steel expertise, electric-arc-furnace production, scrap recycling, regional manufacturing, and industrial product development, with a strong presence in the Americas.
Long steel
Construction steel
Gerdau's construction portfolio includes reinforcing bar, structural sections, merchant bar, wire products, and related steel used in buildings, bridges, roads, industrial facilities, and other infrastructure. These products are manufactured across regional operations and sold through construction-material channels and direct industrial relationships. Rebar, wire products and related construction steels used in reinforced concrete, buildings, infrastructure and civil-engineering projects. These products are manufactured and distributed across Gerdau's principal regional markets.
Industrial steel
Special steel
Special-steel grades are produced for applications requiring controlled chemistry, mechanical performance, durability, or machinability. Typical customers include automotive, machinery, agricultural, energy, and other industrial manufacturers. The line complements Gerdau's higher-volume construction products with more specification-intensive materials.
Long steel
Wire rod and wire products
Wire rod and downstream wire products serve construction, fencing, industrial fabrication, fasteners, and other applications. They are produced from steelmaking and rolling operations and may be supplied in standard or customer-specific grades and dimensions.
Infrastructure steel
Steel rails
Rail products form part of Gerdau's infrastructure-oriented offering. They are intended for railway and heavy-transport applications where dimensional consistency, strength, and wear performance are important.
Steelmaking
Recycled-scrap steel
Gerdau uses ferrous scrap as a major steelmaking input, particularly in electric-arc-furnace operations. Its scrap collection and recycling activities support a circular production model and provide raw material for construction and industrial steel.
Advanced materials · 2019
Graphene-enhanced materials
Through Gerdau Graphene, the group develops additives and materials incorporating graphene for potential industrial applications. The venture extends the company's innovation activity beyond conventional steel products.
Long steel
Merchant bar and structural steel
Bars, beams, angles, channels and other sections supplied to construction, fabrication and industrial customers. The range supports structural frames, machinery, agricultural equipment and general metalworking.
Specialty steel
Specialty steel
Higher-specification steels for automotive, machinery and other industrial applications where chemistry, consistency and mechanical performance are important. Gerdau's specialty operations have included products for demanding North American and Latin American customers.
Mining and raw materials
Iron ore
Iron-ore production and related raw-material activities support Gerdau's steelmaking system and provide exposure to upstream supply. The scale and role of these assets have varied over time as the group has adjusted its portfolio.
Controversies
2016
Bribery, tax fraud, and money-laundering allegations
The company and then chief executive André Bier Gerdau Johannpeter faced legal claims alleging bribery of tax officials, losses to Brazil's tax revenue, laundering of funds, and influence peddling. The reported claims were connected with the Operation Zealots matter. Gerdau denied wrongdoing and said it cooperated with the authorities.
2016
Zelotes tax investigation
Brazil's Zelotes investigation examined alleged irregularities in administrative tax-appeal proceedings and included scrutiny of Gerdau executives and intermediaries. Gerdau denied wrongdoing and said it cooperated with the authorities.
2015
Operation Zealots tax investigation
Brazilian federal police searched Gerdau offices in connection with Operation Zealots, an investigation into alleged manipulation and fraud involving the country's tax appeals system.
Brand decisions
2024
Acquire Dale's RecyclingM&ABackground
Scrap access is strategically important to Gerdau's electric-arc-furnace and recycled-steel model.
Action taken
Gerdau acquired Dale's Recycling, an automotive scrap recycler operating in Tennessee, Kentucky, and Missouri.
Aftermath
The transaction expanded the group's U.S. scrap-recycling footprint.
Reported acquisition consideration. $60 million (2024)
2019
Create Gerdau GrapheneStrategyBackground
Gerdau pursued new industrial-material applications beyond its core steel portfolio.
Action taken
It formed Gerdau Graphene in partnership with the University of Manchester's Graphene Engineering and Innovation Centre.
Aftermath
The venture focused on developing and commercializing graphene additives and materials.
2018
Chief-executive successionOtherBackground
After twelve years with André Gerdau Johannpeter as chief executive, the group changed its operating leadership.
Action taken
Gustavo Werneck was appointed chief executive.
Aftermath
The succession continued Gerdau's shift toward professional operational management while retaining the family's strategic and governance importance.
2007
Chaparral Steel acquisitionM&ABackground
Gerdau was expanding its North American long-steel portfolio and wanted greater exposure to structural and specialty products.
Action taken
Gerdau acquired Chaparral Steel and related assets.
Aftermath
The purchase increased Gerdau's North American production and broadened its structural-steel offering.
1999
Acquire majority stake in AmeriSteelM&ABackground
Gerdau sought to establish a substantial operating platform in the United States.
Action taken
The company acquired 75 percent of AmeriSteel from Kyoei Steel.
Aftermath
Production outside Brazil represented approximately 40 percent of the company's business after the expansion.
1999
AmeriSteel acquisitionM&ABackground
Gerdau sought to establish a durable North American platform for long-steel products and construction customers.
Action taken
It acquired a controlling interest in AmeriSteel and expanded its presence in the United States.
Aftermath
The transaction became the foundation for later North American expansion and additional acquisitions.
Sources6 sources
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