An MTC is a legal document certifying the material's compliance with the order. A 3.1 Certificate (per EN 10204) is issued by the manufacturer and includes specific test results. It contains:
Supplier and Customer Information.
Material Identification: Grade (e.g., 1.7225), condition (e.g., +QT), dimensions.
Traceability Data: Heat Number, Batch/Lot Number.
Chemical Analysis: Actual results from spectrographic analysis of the heat.
Mechanical Properties: Actual test results (Rm, Rp0.2, A, Z, impact values, hardness) from samples taken from the batch and heat-treated with it.
Heat Treatment Details: Austenitizing and tempering temperatures used for the batch.
NDT Results: If specified (e.g., UT acceptance level).
Statement of Compliance with the specified standard (e.g., EN 10083-3).
Authorized signature and stamp.