Standard Swedish standard · SS-EN ISO 17640:2018

Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and assessment (ISO 17640:2017)

Status: Withdrawn

· Replaced by: SS-EN ISO 17640:2018 , SS-EN ISO 17640:2018
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Standard Swedish standard · SS-EN ISO 17640:2018

Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and assessment (ISO 17640:2017)
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Scope
ISO 17640:2017 specifies techniques for the manual ultrasonic testing of fusion-welded joints in metallic materials of thickness ≥8 mm which exhibit low ultrasonic attenuation (especially that due to scatter) at object temperatures from 0 °C to 60 °C. It is primarily intended for use on full penetration welded joints where both the welded and parent material are ferritic.
Where material-dependent ultrasonic values are specified in ISO 17640:2017, they are based on steels having an ultrasonic sound velocity of (5 920 ± 50) m/s for longitudinal waves and (3 255 ± 30) m/s for transverse waves.
ISO 17640:2017 specifies four testing levels, each corresponding to a different probability of detection of imperfections. Guidance on the selection of testing levels A, B, and C is given in Annex A.
ISO 17640:2017 specifies that the requirements of testing level D, which is intended for special applications, be in accordance with general requirements. Testing level D can only be used when defined by specification. This includes tests of metals other than ferritic steel, tests on partial penetration welds, tests with automated equipment, and tests at object temperatures outside the range 0 °C to 60 °C.
ISO 17640:2017 can be used for the assessment of discontinuities, for acceptance purposes, by either of the following techniques:
a) evaluation based primarily on length and echo amplitude of the discontinuity;
b) evaluation based on characterization and sizing of the discontinuity by probe movement techniques.

Subjects

Welded joints and welds (25.160.40)


Buy this standard

Standard Swedish standard · SS-EN ISO 17640:2018

Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and assessment (ISO 17640:2017)
Subscribe on standards - Read more Dölj
Price: 1 152 SEK
standard ikon pdf

PDF

Price: 1 152 SEK
standard ikon

Paper

Price: 1 843,20 SEK
standard ikon pdf + standard ikon

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Product information

Language: English

Written by: Svenska institutet för standarder

International title:

Article no: STD-80000431

Edition: 2

Approved: 1/8/2018

No of pages: 44

Replaces: SS-EN ISO 17640:2011

Replaced by: SS-EN ISO 17640:2018 , SS-EN ISO 17640:2018