Ultra High Strength Steel
This information provides repair recommendations and general guidelines for steel classified as Ultra High Strength Steel, also know
as UHSS. This type of steel normally has a tensile strength greater than 700
MPa.
This includes the common steel names of:
• Ultra High Strength Steel (UHSS)
• Martensitic Steel (MS)
• Press Hardened Steel (PHS)
• Boron Steel
Note:
• Repair of this type of steel is not recommended.
• This type of steel should be replaced at factory joints only. Sectioning or partial replacement is not recommended.
• The use of heat to repair damage is not recommended for this type of steel.
• Stitch welding is not recommended for this type of steel.
• This type of steel can not be used as a backing reinforcement or a sleeve for a sectioning joint.
Recommended Repairs
• Squeeze resistance spot welding can be used to replace factory spot welds, where applicable.
• MIG plug welding can be used to replace factory spot welds.
• MIG brazing can be used to replace factory spot welds.
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Collision Repair
BODY REPAIR
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CHEVROLET SONIC 2012 BODY REPAIR MANUAL