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ArcelorMittal Sestao

About ArcelorMittal Sestao

Located in the Biscay municipality of Sestao (part of Greater Bilbao), on the banks of the Bilbao River, ArcelorMittal Sestao is a new generation steel plant based on Electric Arc Furnace and Thin Slab Direct Rolling casting and Rolling facilities adequate to produce high quality low-carbon emissions steel. Sestao is well served by road, rail, own port for limited volume vessels and by the port of Bilbao for larger raw material intake and coil shipments.
Focusing on ArcelorMittal’s XCarb® programme and pioneer in net zero journey of ArcelorMittal Europe – Flat Products, the plant of Sestao produces Hot Rolled Black and Pickled coil for direct deliveries and substrate for further processed value added rerolled and coated product through our sister plants of ArcelorMittal Europe – Flat Products. All this with high recycled content and use of renewable electricity when desired by our customer so that they can achieve lower carbon footprint in their end product.


  • 1 scrap yard 
  • 2 Electric Arc Furnaces 
  • 2 ladle furnaces 
  • 2 fume treatment plants
  • 1 water treatment plant
  • 2 Thin slab CSP® technology Continuous caster
  • 2 Tunnel furnaces
  • 1 Hot strip mill with 2 Down-coilers
  • 1 Pickling line equipped with Tension leveler 
  • 1 Hydrochloric acid regeneration plant and neutralization plant
  • Auxiliary shops: rolls machining shop, ladle and tundish refractory shop, mechanical and electrical shops
  • Chemical and Mechanical Laboratory



ArcelorMittal Sestao offers a wide range of products. Thanks to specific technology Sestao plant is able to go to relatively lower thicknesses in most of the product offer with tight thickness tolerance performances.

  • Deep Drawing Steel
  • Structural steels for construction and General Industry
  • Medium Carbon steels for Industry and Automotive Tubes
  • High Stength Low Alloyed (HSLA) steel for Industry and Automotive
  • Ferritic bainite steels for Automotive
  • Floor plates with European pattern
  • Atmospheric corrosion Resistant Steel for Construction
  • High carbon steels till C80 & High carbon alloyed steels for rerolling & heat treatment
  • Quenchable Boron steels for Agricultural and machinery
  • Substrate for Magnelis® coated, Organic Coated, Other HDG coated XCarb® recycled and renewably produced low-carbon emissions steel
  • Substrate for low-carbon emissions Press Hardening Grades

Environmental declaration ArcelorMittal Sestao

  Spanish version


ArcelorMittal Spain Sustainability Report 2022 (Spanish version)


Integrated policy

  Spanish version