TRIP is a group of low alloy steels with high tensile strength und ductility. TRIPS steel has a triple-phase microstructure consisting of ferrite, bainite and retained austenite. This is achieved using specific alloys and a specialized heat treatment process during manufacturing. The metastable retained austenite is stabilized up to room temperature by the aggregation of carbon during heat treatment.

Cold forming of TRIP steel induces a martensitic transformation of the retained austenite. This transformation improves work hardening and allows for very high deformation degrees. Therefore TRIP steel is especially suitable for complex parts and allows more freedom for the engineers to use the full capacity of the material. The yield strength of TRIP steel is between 340 and 590 MPa.

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