What is ISO 4987 about?
ISO 4987 is an international standard on steel and iron castings that discusses various tests and examinations to ensure the quality of castings. ISO 4987 specifies a method for the liquid penetrant testing of steel and iron castings
ISO 4987 complements the general principles of liquid penetrant testing described in ISO 3452 1 with additional requirements of the steel foundry industry. Liquid penetrant testing is a common method used to check for deficiencies in welds, pipes, bars and other materials.
Who is ISO 4987 for?
ISO 4987 on Liquid penetrant testing is relevant to:
- Steel and iron casting manufacturer
- Quality control officer
Why should you use ISO 4987?
Liquid penetrant testing is a non-destructive material examination procedure used to check for deficiencies such as cracks by spreading a thin liquid dye onto the material's surface, followed by a developer’s application.
ISO 4987 guides the user in performing liquid penetrant testing by providing information on testing, surface preparation, non-linear indications (SP), linear indication (LP), recommended surface finish for liquid penetrant testing, model of a liquid penetrant test report
As a user of ISO 4987, you can ensure the quality of steel and iron casting and can detect any surface-connected discontinuities such as cracks from fatigue, quenching, and grinding, as well as fractures, porosity, incomplete fusion, and flaws in joints by using the liquid penetrant testing. ISO 4987 could give you the best guidance in performing liquid penetrant testing without any difficulties, this helps to improve the quality of products thus, you would gain customer trust and confidence in the product.
What’s changed since the last update?
BS ISO 4987:2020 supersedes BS ISO 4987:2010, which is withdrawn
The main changes compared to the previous edition are as follows:
- Isolated non-linear indications are defined in Non-linear indications (SP)
- Definition of aligned linear indications in a Linear indication (LP) is corrected
