Material Form Type of Discontinuity Water-Washable Penetration Time* Aluminium Castings Porosity, Cold Shuts 5 to 15 min Aluminium Extrusions, Forgings Laps NR** Aluminium Welds Lack of Fusion, Porosity 30 Aluminium All Cracks, Fatigue Cracks 30, not recommended for fatigue crack Magnesium Castings Porosity, Cold Shuts 15 Magnesium Extrusions, Forgings Laps not recommended Magnesium Welds Lack of Fusion, Porosity 30 Magnesium All Cracks, Fatigue Cracks 30, not recommended for fatigue crack Steel Castings Porosity, Cold Shuts 30 Steel Extrusions, Forgings Laps not recommended Steel Welds Lack of Fusion, Porosity 60 Steel All Cracks, Fatigue Cracks 30, not recommended for fatigue crack Brass & Bronze Castings Porosity, Cold Shuts 10 Brass & Bronze Extrusions, Forgings Laps not recommended Brass & Bronze Brazed Parts Lack of Fusion, Porosity 15 Brass & Bronze All Cracks 30 Brass & Bronze       Plastics All Cracks 5 to 30 Glass All Cracks 5 to 30…

PT Test Standard International Organization for Standardization (ISO) ISO 3059, Non-destructive testing – Penetration testing and magnetic particle testing – Viewing conditions ISO 3452-1, Non-destructive testing. Penetrant testing. Part 1. General principles ISO 3452-2, Non-destructive testing – Penetrant testing – Part 2: Testing of penetrant materials ISO 3452-3, Non-destructive testing – Penetrant testing – Part 3: Reference test blocks ISO 3452-4, Non-destructive testing – Penetrant testing – Part 4: Equipment ISO 3452-5, Non-destructive testing – Penetrant testing – Part 5: Penetrant testing at temperatures higher than 50 °C ISO 3452-6, Non-destructive testing – Penetrant testing – Part 6: Penetrant testing at temperatures lower than 10 °C ISO 10893-4: Non-destructive testing of steel tubes. Liquid penetrant inspection of seamless and welded steel tubes for the detection of surface imperfections. ISO 12706, Non-destructive testing – Penetrant testing – Vocabulary ISO 23277, Non-destructive testing of welds – Penetrant testing of welds – Acceptance levels European Committee for Standardization (CEN) EN 1371-1, Founding – Liquid penetrant inspection…