Ahmsa - Altos Hornos de Mexico SA de CV

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Based in Monclova, Coahuila, Mexico & established in 1942. Altos Hornos de Mexico SA de CV (AHMSA) is the largest integrated steel plant in Mexico. Ahmsa produces slab, plate, hot rolled coil, cold rolled coil and tinplate, as well as heavy sections and beams. The company is also involved in the mining of coal for steelmaking and power plants.


  • Prolongación Juárez S/N, Col. La Loma, Edificio GAN Modulo II  

Town, State, Country

  • Monclova, Coahuila de Zaragoza, Mexico  


  • 25770 

Postal address

  • PO Box 121, Monclova, 25770  
  • Year Established 1942
  • No. of employees 10,000+
  • Ownership Grupo Acerero del Norte SA de CV, 78.91%
  • End User Industries Automotive, construction, white goods, electronics, energy, railway, gas


  • ISO 14001
  • ISO/TS 16949
  • ISO 9000
  • ISO 9001
  • OHSAS 18001

Trade Association Membership

  • CANACERO - Camara Nacional de la Industria del Hierro y del Acero
  • AISI - American Iron and Steel Institute
    AISI - American Iron and Steel Institute
  • Alacero - Asociación Latinoamericana del Acero


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