ISO 4992-2:2020
Steel castings — Ultrasonic testing — Part 2: Steel castings for highly stressed components
This document 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.
This document 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 document does not apply to austenitic steels and to joint welds.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
4.1 Order information
4.2 Extent of testing
4.3 Maximum acceptable size of discontinuities
4.3.1 General
4.3.2 Indications without measurable dimensions
4.3.3 Indications with measurable dimensions
4.4 Qualification of personnel
4.5 Wall-section zones
4.6 Classes
5 Testing
5.1 Principles
5.2 Material
5.3 Test equipment, coupling fluid, test sensitivity and resolution of detection
5.3.1 Ultrasonic instrument
5.3.2 Probes and transducer frequencies
5.3.3 Checking of the ultrasonic test equipment
5.3.4 Coupling fluid
5.3.5 Test sensitivity and resolution of detection
5.4 Preparation of casting surfaces for testing
5.5 Test procedure
5.5.1 General
5.5.2 Range setting
5.5.3 Sensitivity setting
5.5.4 Consideration of various types of indications
5.5.5 Recording and recording limits
5.5.6 Assessment of indications to be recorded
5.5.7 Characterization and sizing of discontinuities
5.6 Test report
Annex A (normative) Resolution of detection of the instrument-probe combination
Annex B (informative) Sound-beam diameters
Annex C (informative) Types of indications generated by typical discontinuities
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
4.1 Order information
4.2 Extent of testing
4.3 Maximum acceptable size of discontinuities
4.3.1 General
4.3.2 Indications without measurable dimensions
4.3.3 Indications with measurable dimensions
4.4 Qualification of personnel
4.5 Wall-section zones
4.6 Classes
5 Testing
5.1 Principles
5.2 Material
5.3 Test equipment, coupling fluid, test sensitivity and resolution of detection
5.3.1 Ultrasonic instrument
5.3.2 Probes and transducer frequencies
5.3.3 Checking of the ultrasonic test equipment
5.3.4 Coupling fluid
5.3.5 Test sensitivity and resolution of detection
5.4 Preparation of casting surfaces for testing
5.5 Test procedure
5.5.1 General
5.5.2 Range setting
5.5.3 Sensitivity setting
5.5.4 Consideration of various types of indications
5.5.5 Recording and recording limits
5.5.6 Assessment of indications to be recorded
5.5.7 Characterization and sizing of discontinuities
5.6 Test report
Annex A (normative) Resolution of detection of the instrument-probe combination
Annex B (informative) Sound-beam diameters
Annex C (informative) Types of indications generated by typical discontinuities
Bibliography