Chevrolet Sonic 2012 Body Repair Manual page 368

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Collision Repair
Ultra High Strength Dual Phase Steel
This information provides repair recommendations and general guidelines for steel classified as Ultra High Strength Dual Phase Steel
(dual phase steel with a tensile strength greater than 800 MPa), also known as DPX.
General Motors recommends the following when repairing or replacing this type of steel during collision repair.
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 classification of steel cannot be used as a backing reinforcement or a sleeve for a sectioning joint, unless a specific
procedure is available.
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.
BODY REPAIR
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CHEVROLET SONIC 2012 BODY REPAIR MANUAL
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