Ultraljudprovning av metalliska material

This International Standard specifies a method for the liquid penetrant inspection of steel castings, whatever

their grade and the casting procedure used to produce them.

ISO 4992-1 specifies the requirements for the ultrasonic testing of steel castings (with ferritic structure) for general purposes, and the methods for determining internal discontinuities by the pulse-echo technique.

ISO 4992-1 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 with respect to the test procedure and the acceptance levels.

This part of ISO 4992 does not apply to austenitic steels and to joint welds.

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 with respect to the test procedure and the acceptance levels.

This part of ISO 4992 does not apply to austenitic steels and to joint welds.