Corrosion, Erosion, UT Thickness Training & Certification Plates. Corrosion/Erosion and Pitting Specimens Plate Dimensions: Length 300mm X Width 200mm Thickness – 15mm Carbon Steel Corrosion/Erosion Defects Were Placed Randomly On The Specimens. Some Of Specimens Will Have Naturally Obtained Corrosions/Erosions Recorded Depth Of The Corrosion Indications Will Be Based On The Deepest Spot Within The Field Of Corrosion. The Host Side Of The Plate Will Be Covered With A “Removable” Cover Plate.