BS ISO 4986:2010 - Steel castings. Magnetic particle inspection – BSI British Standards

BS ISO 4986:2010

Steel castings. Magnetic particle inspection

Status : Superseded, Withdrawn   Published : April 2010 Replaced By : BS ISO 4986:2020

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BS ISO 4986:2010 Steel castings. Magnetic particle inspection

BS ISO 4986 specifies a method for the magnetic particle inspection of ferro-magnetic steel castings.

It also gives acceptance criteria through severity levels defined by the nature, the area and the dimensions of the discontinuities present.

BS ISO 4986 applies to all ferro-magnetic castings, independent of the moulding method.

A steel casting is considered to be ferro-magnetic if the magnetic induction is greater than 1 T (Tesla) for a magnetic field strength of 2,4 kA/m.

BS ISO 4986 only applies to those areas of the castings specified for inspection, as well as the percentage of castings to be inspected

Contents of BS ISO 4986:

1 Scope
2 Normative references
3 Ordering information
4 Method of inspection
4.1 Operating mode
4.2 Qualification of the operators
4.3 Surface preparation
4.4 Conditions of inspection
5 Acceptance criteria
5.1 Definition of magnetic-inspection indications
5.1.1 General
5.1.2 Non-linear indications (SM
5.1.3 Linear indications (LM)
5.2 Severity levels
5.2.1 General
5.2.2 Non-linear indications
5.2.3 Linear and aligned indications
5.2.4 Selection of the severity level
5.2.5 Designation of severity levels
6 Classification of the indications and interpretation of results
6.1 Classification of the indications using Tables 1 and 2
6.1.1 General
6.1.2 Non-linear indications
6.1.3 Linear and aligned indications
6.2 Interpretation of results
7 Cleaning after examination and demagnetization
8 Inspection documents
Annex A (informative) Recommended surface finish for magnetic particle inspection
Annex B (informative) Reference figures — Non-linear indications (SM
Annex C (informative) Reference figures — Linear (LM) and aligned (AM) indications
Annex D (informative) Model of a magnetic particle inspection document


Standard NumberBS ISO 4986:2010
TitleSteel castings. Magnetic particle inspection
StatusSuperseded, Withdrawn
Publication Date30 April 2010
Withdrawn Date14 February 2020
Normative References(Required to achieve compliance to this standard)ISO 3059, ISO 4990, ISO 9712, ISO 9934-1
Informative References(Provided for Information)ISO 11971
Replaced ByBS ISO 4986:2020
International RelationshipsISO 4986:2010
Draft Superseded By08/30144212 DC
DescriptorsSteels, Visual inspection (testing), Non-destructive testing, Magnetic-particle flaw detection, Grades (quality), Surface defects, Classification systems, Flaw detection, Ferro-alloys, Castings, Magnetic materials
Title in FrenchPièces moulées en acier. Contrôle par magnétoscopie
Title in GermanStahlguss. Magnetpulverprüfung
ISBN978 0 580 56317 1
File Size598 KB

*To ask about withdrawn titles contact the
Customer Relations, +44 345 086 9001
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