Hoffmann are a recently Pratt & Whitney approved manufacturer of TAM panels. Made with German precision the Hoffmann TAM panel is a 2.5mm thick stainless steel plate with half the test surface hard coated with a micro thin chrome alloy. The chrome coloured half contains five controlled and evenly spaced cracked centers – With the cracked centers in a circular pattern forming 5 star-like shapes.
The non-coated side is grit blasted to give a roughness (Ra = 2.0) and is for testing the washability* of penetrant and for performing background tests.
