Titanal
Metal plates - titanal
For racing sandwich skis, reinforcement in the form of one or preferably two sheets of titanal is a must. For these skis, the higher weight plays a positive rather than a negative role. For freeride or even stiffer downhill skis, titanal brings a significant increase in weight.
Source: https://snow.cz/clanek/3654-co-tvori-lyzi-aneb-tuhost-flexe-hmotnost-a-materialy