Scheme 354
The bodywork is made up of a number of different steels to provide optimal protection in the event of a collision, rigidity, fuel economy etc.
The types of steel in this section are High Strength Steel (HSS). This has a higher tensile strength and yield point than ordinary steel sheet.
The yield point increases when it is heat treated. HSS-steel can be more difficult to align than ordinary steel plate.
When using an alignment bench, HSS components can cause problems if the counterhold is not fully tightened. Note how the bodywork reacts to tension and ensure that only the deformed area moves.
All welding work must be carried out according to the information in VIDA.
Note. HSS steel must not be heated for alignment purposes.
Scheme 355
BORON steel is in the same group as HSS steel.
The dark gray components are manufactured in Boron steel, The gray sections in the illustrations are High Strength Steel (HSS) with a tensile strength above 340 MPa and must therefore be treated with extra care during repair.
Boron steel has a very high tensile strength, 1150 MPa, and a very high yield point, 1550 MPa.
When replacing Boron steel components, the welds cannot be drilled. Grind or plasma cut instead.
Boron steel has good tolerance for welding.
It is not possible to galvanize Boron steel during manufacture. These components must be rust-proofed extra thoroughly.
Note. BORON steel must not be aligned or heated.
Note. Boron steel can only be joined where indicated. Mark carefully using a template. Use a cutting disc or plasma torch.
