Who uses Dye-Pen?

Automotive and general engineering companies use us due to Alloy Heat Treatment carrying out dye-penetration to BSI scope approval BS EN ISO 9001: 2015.


Dye-pen inspection is a non-destructive test method which does not harm the aluminium being inspected. It is done to detect defects.


AHT has its own Dye-penetrant facility.


This service can be done as a stand-alone service or after heat treatment


The test is very effective in detecting porosity, cracks, fractures, laps, seams and other flaws that are open to the surface of the test piece / casting. This may be caused by fatigue, impact, quenching and machining.