What is ISO 4992‑2 about?
ISO 4992 is an international standard on steel castings that discusses various tests and examinations related to ultrasonic testings to ensure the quality of castings. ISO 4992‑2 is the second part of the ISO 4992 multi-series.
ISO 4992‑2 specifies the requirements for the ultrasonic testing of steel castings (with ferritic structure) for highly stressed components, and the methods for determining internal discontinuities by the pulse-echo technique. Purchasers determine if components are highly stressed based on the need for performance or safety.
ISO 4992‑2 applies to the ultrasonic testing of steel castings which have usually received a grain refining heat treatment and which have wall thicknesses up to and including 600 mm. For greater wall thicknesses, special agreements apply concerning the test procedure and the acceptance levels.
NOTE: ISO 4992‑2 does not apply to austenitic steels and joint welds.
Who is ISO 4992‑2 for?
ISO 4992‑2 on ultrasonic testing is relevant to:
- Steel casting manufacturer
- Quality controller
- Ultrasonic testing engineer
Why should you use ISO 4992‑2?
Ultrasonic testing is a family of non-destructive testing techniques. It utilizes sound waves to detect cracks and defects in parts and materials. It can also be used to determine a material's thickness, such as measuring the wall thickness.
ISO 4992‑2 provides you with the best guidance in performing Ultrasonic testing by providing information on material, test equipment, coupling fluid, test sensitivity and resolution of detection, ultrasonic instrument, preparation of casting surfaces for testing, test procedure.
As a user of ISO 4992‑2, you can ensure the quality of highly stressed components and even can detect very small flaws deep within a part by using the pulse-echo technique. ISO 4992‑2 assist the user in performing ultrasonic testing without any difficulties this helps the user to inspect the highly stressed components and improve his quality of products which helps him to gain customers trust and confidence in the product.
With ISO 4992‑2 the operation of systems and plants will thus become more economic and safer as the costs for maintenance and repair are reduced by the reduced amount of tests required on the products.
What’s changed since the last update?
BS ISO 4992‑2:2020 supersedes BS ISO 4992‑2:2006, which is withdrawn
The main changes compared to the previous edition are as follows:
- New definition added for “rim zone” and “non-measurable dimension
- Figure 1 on Division of wall section into zones 12 was redrawn
- Subtitles added to Figures
- Table on Near-field lengths of various probes was corrected
- Figure 5 was renumbered as Figure 6