The use of higher steel qualities in a construction does not necessarily have a negative impact on the formability.

To maximize the potential advantages, it is generally advisable to use the high-tensile material from the start of the construction, rather than modifying an existing construction. 

Forming the harder materials can require more energy, but this is partially balanced out by the decreased thickness. Generally, it is possible to use harder material on existing constructions .

The handbook from SSAB Swedish Steel for processing steel plates contains comprehensive information on the various forming processes for the effective forming of high-tensile materials. For this, the correct pre-setting of tools becomes very important. 

Many qualities of steel having a high degree of strength (e.g. RP material) but are nevertheless very tensile which allows complex forms to be manufactured and at the same time, considerable weight-savings can also be achieved.  

If necessary, you can request a detailed advisory and FEA analysis from SSAB Swedish Steel.