ALD Vacuum Technologies, Hanau, Germany, is a synonym for innovation in vacuum technologies at the highest level. ALD is one of the leading suppliers of vacuum furnaces and vacuum processes. We are operating in all fields of vacuum metallurgy and vacuum heat treatment with high-tech products and services.

With partners and subsidiaries in the USA, Great Britain, France, China, Japan, Middle America, Russia, India and Singapore and more than 70 representatives world wide, we are serving a challenging international range of customers.


ALD's primary and remelting technologies produce high grade ultrapure materials and alloys. The main focus is on steels and special nickel based alloys as well as on special materials i.e. Titanium, Tantalum or Niobium and the products thereof like blocks, investment castings, energy recovery or metal powder. Various applications are in the aviation industry, the chemical and electrical industry. Furnaces for coating of turbine blades as well as the production of ultrapure silicon blocks as a basic material for solar wafers are examples of our high end technology.

Innovation and continuous ongoing developments of technologies and systems for heat treatment and sintering are leading to constant quality improvements of the treated components while cutting costs at the same time. These applications are amongst others utilised in the tool manufacturing industry and especially in the automotive and gear production.