ISO 4987:2020 PDF

Overview

ISO 4987:2020 - Steel and iron castings - Liquid penetrant testing - specifies a penetrant testing method tailored to the steel and iron foundry industry. It complements the general principles in and provides foundry-specific requirements for performing, interpreting and reporting liquid penetrant (LP) inspections on castings. The standard defines acceptance criteria, severity levels, operator qualifications, surface preparation and test conditions to ensure consistent non-destructive testing (NDT) of cast components.