ISO/TR 15922:2011
Current
The latest, up-to-date edition.
Metallic and other inorganic coatings Evaluation of properties of dark-stain phenomenon of chromated coiled or sheet product
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English
05-12-2011
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ISO/TR 15922:2011 describes the methods to evaluate the properties of dark-stain phenomenon observed in chromate conversion-coated coiled and sheet products.
Chromate conversion coatings, with trivalent or hexavalent chromium ions, are applied to hot-dip metallic zinc and electroplated-zinc steel products to enhance corrosion resistance of the components.
When zinc-coated packed coiled and sheet products with conversion coatings are unpacked after long-term storage at elevated temperature and high relative humidity, the surface of the sheet products appears tarnished. This discolouration appears as dark or black stain and influences the appearance and corrosion resistance, when parts are produced using these affected sheets.
| DocumentType |
Technical Report
|
| Pages |
9
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| NEN NPR ISO/TR 15922 : 2012 | Identical |
| IEC 60068-3-6:2001 | Environmental testing - Part 3-6: Supporting documentation and guidance - Confirmation of the performance of temperature/humidity chambers |
| ISO 2859:1974 | Sampling procedures and tables for inspection by attributes |
| ISO 3892:2000 | Conversion coatings on metallic materials Determination of coating mass per unit area Gravimetric methods |
| ASTM D 2244 : 2016 : REDLINE | Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates |
| IEC 60068-3-5:2001 | Environmental testing - Part 3-5: Supporting documentation and guidance - Confirmation of the performance of temperature chambers |
| ISO 4519:1980 | Electrodeposited metallic coatings and related finishes — Sampling procedures for inspection by attributes |
| ISO 3497:2000 | Metallic coatings Measurement of coating thickness X-ray spectrometric methods |
| ISO 4520:1981 | Chromate conversion coatings on electroplated zinc and cadmium coatings |
| ISO 6789:2003 | Assembly tools for screws and nuts Hand torque tools Requirements and test methods for design conformance testing, quality conformance testing and recalibration procedure |
| ISO 3613:2010 | Metallic and other inorganic coatings Chromate conversion coatings on zinc, cadmium, aluminium-zinc alloys and zinc-aluminium alloys Test methods |
| IEC 60068-2-30:2005 | Environmental testing - Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle) |
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