The QSIL Group has been the leading specialist for high-temperature refractory, high-purity and high-tech materials for 60 years.
Quartz and special glass are ideal for use in the most technologically demanding areas. The combination of unique thermal, mechanical and optical properties makes them indispensable materials for industry and science.
Ceramics offer versatile applications with materials that contribute significantly to your required solution through fine-tuning of properties, application specific finishing and bonding and bonding with other materials.
A fully integrated supplier offering materials from powder, sheet or rod to fully finished machined, fabricated and 3D printed parts using additive manufacturing. QSIL offers a diverse portfolio of products of the highest quality including an in-house engineering design and modelling service.
at nine locations
Experience in manufacturing
of high-tech materials
We develop solutions for your challenges. Because standard products are often not enough, we work hand in hand with you at the early project stage to realize your product vision.
Highest purity and reliability for your requirements.
From nano to macro.
Innovative solutions for a wide range of industrial applications.
Solutions for the use of light as a tool.
Opening new paths and protecting lives.
High-purity components from a single source.
QSIL has the latest technologies for manufacturing products from quartz and special glass, ceramics and metals. This know-how enables us to manufacture high precision components from individual pieces to series production, entirely according to the needs of our customers.
Ilmasil® quartz glass is manufactured using our self-developed plasma melting process: In a rotating melting vessel, high-purity quartz sand, which is located on the inner vessel wall as a result of centrifugal force, is melted to form hollow cylinders (billets). An electric arc of high power acts as the energy source. This plasma arc guarantees a constant temperature field over the entire melting chamber and thus causes uniform melting of the crystalline raw material into amorphous quartz glass.
Qualified specialists for the production and processing of our high-performance materials are among our most valuable assets. They help to secure and further expand our technological lead. As a locally rooted, internationally operating group of companies, QSIL offers employees a wide range of benefits at their respective locations.
Ilmenau – Headquarters & Quartz Glass Production
Hattert – ROBU – Glass filter elements
Auma – Oxide ceramics
Frankenblick – Non-oxide ceramics
Sonneberg – Non-oxide ceramics
Jena – Additive manufacturing
Hermsdorf – Refractory Metals
Winschoten – Quartz and special glass
Calne – Refractory Metals