IS 4904 : 2006 Calibration Blocks for Use in Ultrasonic Non-Destructive Testing - Specification

1 Scope

1.1 This standard ( fourth revision ) prescribes the material, dimensions and surface finish of steel blocks used for calibration of ultrasonic flaw detection equipment.

1.2 The blocks prescribed may be selected,as appropriate, for evaluation of various parametersof ultrasonic flaw detection equipment under eitherlaboratory conditions or on a site conditions( see IS 12666 ).

2 References

The following standards contain provisions which through reference in this text, constitute provisions of this standard.At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreementsbased on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below: