BS ISO 4992-2:2020,Steel castings – Ultrasonic testing – Part2:Steel castings for highly stressed components.
BS ISO 4992-2:2020 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.
BS ISO 4992-2:2020 applies to the ultrasonic testing of steel castings which have usually received a grainrefining heat treatment and which have wall thicknesses up to and including 600 mm. For greater wall thicknesses, special agreements apply with respect to the test procedure and the acceptance levels.This document does not apply to austenitic steels and to joint welds.
The casting shall be tested so that the agreed areas are covered (insofar as this is possible from the shape of the casting) by the use of the best applicable test technique.
For wall thicknesses greater than 600 mm, agreement shall be made between the purchaser and manufacturer on the acceptance levels, test procedure, and the recording of the test results.

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