IS 11857 : 1986 Anodized wrought aluminium for external ar chitectural applications

1 Scope

1.1 This standard specifies the performance of coloured oxidecoatings consisting mainly of aluminium oxide produced by theelectrolytic oxidation process during which the aluminium acts asan electrode.

1.2 This standard applies to integral colour anodized wroughtaluminium for architectural applications.

1.3 This standard also applies to coloured oxide films producedover wrought aluminium by electrolytic colouring process.

1.4 For the benefit of the purchaser and the anodizer,recommendation for; assessment of appearance protection of anodizedproducts during transportation and handling, maintenance ofanodized products and selection of material for anodizing have alsobeen covered in Appendix B, C, D and E respectively.

2 References

IS 2 :1960 Rules for rounding offnumerial values

IS 1387 : 1967General requirements for the supply of metallurgicalmaterials

IS 5523 : 1983Methods of testing anodic coatings on aluminium and itsalloys

IS 5528 : 1985 Methodof testing corrosion resistance of electroplatedand anodized aluminium coating by copper acceleratedacetic acid salt spray (CASS) test

IS 6009 : 1970 Methodfor evaluation of results of acceleratedcorrosion tests

IS 6012 : 1970 Methodfor measurement of coating thickness by eddycurrent

IS 7088 : 1973Recommended practice for anodizing aluminium and itsalloys