Casting Metal Plate MT and PT Exam Flaw Specimens (Metric Version) Carbon Steel Casting Metal Plate MT and PT Exam Flaw Specimens Casting Metal Plate Magnetic Particle and Liquid Penetrant Exam flawed specimens. Geometry: 6mm (T) x 100mm Plate. Flaws: 3, randomly placed Standard Tolerance: +/-4mm. Documentation: NDT Verification Reports, C of C, CAD Drawings and Test Sheets. Material: Carbon Steel. Customized Calibration Test Block and Flaw Specimen also available.