Product development

Some examples of current research projects that Gränges also offers commercially to its customers are listed below.


Gränges’ patented technology TRILLIUM® simplifies the complex brazing process by making the degreasing, fluxing, cleaning, and drying stages redundant. Instead, Gränges makes it all happen within the material in a process called Active brazing. TRILLIUM® Solid, launched in 2010, and TRILLIUM® Lean, launched in 2017, help Gränges’ customers reduce costs, create new designs, and reach a higher level of profitability – while reducing their environmental impact. TRILLIUM® is well suited for most components in customer applications, such as chillers, radiators, charge air coolers, oil coolers and battery cooling plates.

Since the launch of TRILLIUM® Lean in April 2017, there has been a sharp increase in interest, with many customers involved in tests and validations. Sales of TRILLIUM® increased by 30 per cent in 2018, and Gränges expects the technology to represent a significant share of Gränges’ sales in three to five years.

Strong-sagging-resistant fins

Strong sagging resistant fins is a patented material that gives improved properties based on advanced processes, resulting in better strength after brazing. 

Material for exhaust gas re-circulation (EGR)

Requirements for lower engine emissions are continuously increasing. Engine exhaust can be extremely corrosive due to its high acid content (sulphur). Gränges is focusing on material validation in this area.

Gränges’ research and innovation efforts have resulted in 58 patent families and 198 granted patents, with an additional 106 patent applications pending (as at 31 December, 2018).