Ultra High Strength Dual Phase Steel
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Ultra High Strength Dual Phase Steel
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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.
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Note
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Repair of this type of steel is not recommended.
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This type of steel should be replaced at factory joints only. Sectioning or partial replacement is not recommended.
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The use of heat to repair damage is not recommended for this type of steel.
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Stitch Welding is not recommended for this type of steel.
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This classification of steel can not be used as a backing reinforcement or a sleeve for a sectioning joint, unless a specific procedure is available.
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Recommended Repair:
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Squeeze Resistance Spot Welding can be used to replace factory spot welds, where applicable.
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MIG plug welding can be used to replace factory spot welds.
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MIG Brazing can be used to replace factory spot welds.
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