Calderys is a leading global provider for industries operating in high-temperature conditions. The Group specializes in thermal protection for industrial equipment with a wide range of refractory products and advanced solutions to enhance steel casting, metallurgical fluxes, and molding processes. With a presence in more than 30 countries and a strong footprint in the Americas through the brand HWI (HarbisonWalker International), Calderys’ international network of experts ensures an end-to-end offer with tailored services. Drawing on over 150 years of experience, Calderys supports its customers in their energy transition needs. Headquartered in Paris, France, the Group counts 4,500 employees (excluding contractors), and 50 plants on five continents. Calderys - Forged in legacy. Fueled by excellence.
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The Calderys annual revenue was $1.6 billion in 2026.
Aurélie de Chassey is the Global Vice President, Communications and Sustainability of Calderys.
1,357 people are employed at Calderys.
Calderys is based in Paris, Ile-de-France.
The NAICS codes for Calderys are [23, 238, 2381, 23815, 212, 21].
The SIC codes for Calderys are [145, 14, 32, 329].