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AS 2331.1.3-2001
[Current]Methods of test for metallic and related coatings, Method 1.3: Local thickness tests — Magnetic method
Specifies a method of using coating thickness instruments of the magnetic type for non-destructive measurements of the thickness of non-magnetic coatings (including vitreous and porcelain enamel coatings) on magnetic basis metals.
Published: 19/06/2001
Pages: 8
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
PREFACE
1 SCOPE
2 REFERENCED DOCUMENTS
3 DEFINITIONS
4 PRINCIPLE
5 CALIBRATION OF INSTRUMENTS
5.1 General
5.2 Calibration standards
5.2.1 General
5.2.2 Calibration foils
5.2.3 Coated standards
5.3 Verification
6 PROCEDURE
6.1 General
6.2 Basis metal thickness
6.3 Edge effects
6.4 Curvature
6.5 Number of readings
6.6 Direction of mechanical working
6.7 Residual magnetism
6.8 Surface cleanliness
6.9 Lead coatings
6.10 Techniques
6.11 Positioning of the probe
7 ACCURACY REQUIREMENT
8 REPORT
APPENDIX A
A1 GENERAL
A2 COATING THICKNESS
A3 MAGNETIC PROPERTIES OF THE BASIS METAL
A4 BASIS METAL THICKNESS
A5 EDGE EFFECTS
A6 CURVATURE
A7 SURFACE ROUGHNESS
A8 DIRECTION OF MECHANICAL WORKING OF THE BASIS METAL
A9 RESIDUAL MAGNETISM
A10 MAGNETIC FIELDS
A11 FOREIGN PARTICLES
A12 THE PRESENCE OF AN IRON-RICH LAYER IN VITREOUS OR PORCELAIN ENAMELS
A13 CONDUCTIVITY OF COATING
A14 PROBE PRESSURE
A15 PROBE ORIENTATION
Cited references in this standard
[Current]
Methods of test for metallic and related coatings, Method 1.1: Local thickness tests — Micrographic examination of cross-sections
[Current]
Methods of test for metallic and related coatings, Method 1.4: Local thickness tests — Magnetic induction and eddy current methods
[Current]
Metallic and other inorganic coatings — Definitions and conventions concerning the measurement of thickness
[Current]
Electrodeposited nickel coatings on magnetic and non-magnetic substrates — Measurement of coating thickness — Magnetic method
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