1.1 This standard covers details of processes generally followed for producing anodic coatings on aluminium and its alloys. The following two types of processes are covered in this standard:
Type 1— Sulphuric or oxalic or chromic acid process — for decorative or protective purposes or both (see IS : 1868-1968* ), and
Type 2 — Hard anodizing process — for hard anodic coatings suitable for wear resistance and engineering applications (see IS: 6057-1970t).
1.2 Applications of anodic coatings covered in this standard are given in Appendix A for general guidance.
1.3 Integral colour coatings, opaque and barrier coatings are not covered in this standard.
IS 7088-1973 history
1974IS 7088-1973 Recommended practices for anodizing aluminum and its alloys