Dual Phase Steel

This information provides repair recommendations and general guidelines for steel classified as Dual Phase Steel (Dual Phase Steel with a tensile strength up to and including 800 MPa), also known as DP.

General Motors recommends the following when repairing or replacing this type of steel during collision repair.

Note: The use of heat to repair damage is not recommended for this classification of steel.

Recommended Repairs

• Cold repairs can be performed on this type of steel, unless the damage includes kinks. If the damage includes kinks, the part should be replaced
• Sectioning or partial replacement of this type of steel is recommended only at approved locations, in a specific sectioning procedure.
• This type of steel can be used as a sleeve, or backer plate, when recommended in a specific sectioning procedure.
• Squeeze Resistance Spot Welding can be used to replace factory spot welds, where applicable.
• MIG plug welding and MIG stitch welding can be used on this type of steel.
• MIG Brazing can be used on this type of steel.