Who we are

After many years of professional experience in the world of steel and heat treatment, at TEY we specialize in the highest quality heat treatment, driven by market demand for a high performance treatment.


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Where we are

T. TERMICOS TEY S.L., T. TERMICOS TEY S.L. is located in the village of Atxondo, in the province of Bicscay, at the foot of the majestic Peña de Amboto mountain. It is a valley where the tradition manifested in the towers, palaces, farmhouses and mills is complemented by a significant industrial centre.

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What we do

T. TERMICOS TEY, S.L, the only company dedicated exclusively to heat treating alloy steels for tools and equipment and providing technical advice for this sector, is located in the Artia industrial estate, in Atxondo, Biscay, a small village in the heart of Duranguesado.

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Hardness Conversion Tables

Conversion tables for the Rockwell C, Vickers and Knoop hardness values.

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Comparison between steels

Equivalence between steels from different manufacturers.

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