The Acereros de Monclova (English: Monclova Steelers) are a Triple-A Minor League Baseball team of the Mexican League located in Monclova, Coahuila, Mexico. Their home ballpark is Estadio de Béisbol Monclova, which has a capacity of 12,000 people. The Acereros replaced the Mineros de Coahuila in the 1976 season.

Officially named the Acereros del Norte (Steelers of the North), the Acereros de Monclova (Monclova Steelers) debuted in the Mexican League on March 23, 1974, as the Mineros de Coahuila (Miners of Coahuila) against the Indios de Ciudad Juárez at "Sports Park Ahmsa". They were managed by "Sergeant Shrapnel" Tomás Herrera. The team moved into Monclova Stadium on March 16, 1975, with a game between the Mineros and the Alijadores de Tampico. The team reached the playoffs for the first time in 1976, but were eliminated by Juárez.

In 1980, the team changed their name to Acereros de Monclova and were led by manager Victor Favela. They advanced to the postseason by virtue of finishing in third place in the Northern Zone, but lost 4–0 to the Tecolotes de los Dos Laredos.

The 1986 Steelers set a record for runs scored with 203, matching also their record most homeruns hit in a game. They finished the regular season as the leader of the North Division with a 76–51 record, with a five-game lead over the Sultanes de Monterrey. However, after winning in six games in the first round of the playoffs over Dos Laredos, they fell in the North Division Championship Series to the Sultanes in seven games. In 1987, Monclova defeated Monterrey in five games, but were then defeated in five games by the Tecolotes. Monclova was defeated by the Tecolotes again in the first round of the 1990 playoffs.

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