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Sidenor

Sidenor is a Spanish steel producer specializing in special long steel products and promoting lower-carbon steelmaking.

Last updated September 25, 2026

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Overview

Sidenor is a steelmaking company that describes itself as a leading producer of special long steels and one of the principal suppliers of special steels with a low carbon footprint. Its product range includes semi-finished steel, rolled products and drawn or otherwise finished bar products. The company’s homepage describes a workforce of close to 1,800 people and highlights research, product and process development, and sustainability across its value chain. Its listed semi-finished products include billets and rectangular and round blooms. Rolled products include wire rod, bars, billets and flats; its calibrated products include drawn, turned, ground and cold-drawn products. The range covers carbon and several categories of alloy steel, including steels for quenching and tempering, case hardening, nitriding and spring applications. The supplied material does not specify individual customer markets or countries served. Sustainability is a prominent part of Sidenor’s current positioning. The company says it makes steel using electric arc furnaces and that its steel contains 97% recycled material. It presents life-cycle analysis as a way to assess and reduce product environmental impact, and offers customers sustainable and carbon-neutral steel options. Its sideCO2 software is described as calculating the environmental footprint of more than 20,000 steel references. The evidence provided does not establish the company’s founding date, headquarters, ownership, or listing status.

History

The supplied evidence presents Sidenor as an active steel producer, but does not provide a founding date or a chronological account of the company’s origins, ownership changes or expansion. Those historical details are therefore not stated here. In its current company description, Sidenor identifies itself as a producer of special long steels and a supplier of special steels with a low carbon footprint. It reports a workforce close to 1,800 and highlights research and development as well as work to improve products and production processes. Its listed product range spans semi-finished steel, rolled products and calibrated products, covering carbon steels and a number of alloy-steel categories. The company’s present-day environmental approach, as described in the supplied pages, centers on electric arc furnace production, recycled feedstock and life-cycle analysis. Sidenor says its steel is made with 97% recycled material and that all its production uses electric arc furnaces. It also describes sustainable-steel and carbon-neutral-steel options for customers. The sideCO2 software is presented as a tool for calculating the environmental footprint of more than 20,000 steel references. The supplied material does not date the launch of these initiatives or provide evidence for earlier milestones.

Products and positioning

A special-steel and long-steel producer emphasizing product and process innovation, life-cycle assessment, recycled material and lower-carbon steelmaking.

  • Semi-finished steel

    Includes billets and rectangular and round blooms.

  • Rolled and calibrated products

    Includes wire rod, bars, billets, flats, and drawn, turned, ground or cold-drawn products.

  • Sustainable and carbon-neutral steel options

    Steel options the company says it makes available to customers.

  • sideCO2

    Software described by Sidenor as calculating the environmental footprint of more than 20,000 steel references.

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