Ultra-High-Strength Steel

Information 

• Only "Genuine Porsche spare parts" must be used for repair work. 

Information 

Ultra-high-strength steel panels are extremely strong and rigid. These body parts are recast warm during manufacturing and are press-hardened in cooled recast tools.

Damaged or deformed body parts can impair torsional rigidity, flexional resistance and crash safety.

Information on ultra-high-strength steel: 

• Ultra-high-strength body parts must only be replaced as a complete unit.
• Ultra-high-strength body parts can no longer be reshaped.
• Straightening and reshaping is not permitted.
• Use special drill bits for drilling ultra-high-strength steel.
• Resistance spot-welding can only be carried out using the inverter welders currently approved by Porsche AG.
• Plug spot-welding ultra-high-strength steel does not produce sufficiently strong joints. If holes need to be welded, additional welding seams must be applied.
• For butt, overlap and reinforcement welding, the individual spot welds and welded seams must be at least 30 mm long.
• Resistance spotwelds can also be replaced by blind rivets and adhesive. The number of rivets must be increased for ultra-high-strength steel panels.

If repairs are needed, always read the specific instructions in the relevant Workshop Service Information.