Spot Weldability of High Strength, Cold Rolled Steels 790005

The increased usage of high-strength, cold-rolled steels has revealed differences in spot welding characteristics between the thin, high strength steels and the plain carbon steels commonly used in the automotive industries. The response of four, 275 MPa yield strength, cold-rolled steels to a variety of spot welding schedules was determined through an evaluation of mechanical property and fracture appearance tests. The results of this study were compared to various weld quality evaluation criteria and suggestions for a revised criteria were proposed.


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