---
title: "Indian Standards (BIS) — Reference Library"
description: >-
  Bureau of Indian Standards specifications for aluminium surface treatment. These are the controlling standards for anodizing and surface finishing on Indian fab
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**Indian Standards** · [MIL & Aerospace Specs](/reference/us-mil-aerospace) · [ASTM Standards](/reference/astm-standards) · [ISO & EN Standards](/reference/iso-en-standards) · [AAMA Standards](/reference/aama-standards) · [Textbooks](/reference/textbooks) · [Research Papers](/reference/peer-reviewed-research) · [Industry Associations](/reference/industry-associations) · [Manufacturer Bulletins](/reference/manufacturer-bulletins)

**Sources in this category:** 4. Listed in order of standard precedence (formal standards first, then textbooks, then research papers, then industry resources), then by year (newest first).

Standard · 2022

IS 1868 — Anodic Coatings on Aluminium and its Alloys (4th Revision)

Bureau of Indian Standards (BIS)

The controlling Indian standard for anodic coatings on aluminium and its alloys, covering decorative and protective anodizing. Specifies coating-thickness grades AC 5, AC 10, AC 15, AC 20, AC 25 (thickness in micrometres), with sealing quality, abrasion resistance, light-fastness, and dimensional change requirements. Provides test method references (cross-linked to IS 5523 for thickness, sealing, and abrasion testing). Used for BIS certification of anodized architectural extrusions, consumer goods, and industrial components in India. The 4th revision aligned several provisions with ISO 7599.

[View source →](https://www.services.bis.gov.in/php/BIS_2.0/bisconnect/standard_review/Standard_Review/Isdetails?ID=MzAyOTM%3D) · [Details](/reference/is-1868-2022)

Access: Free for online viewing via BIS portal; printed copies paywalled

anodize-thicknesssealingquality-gradesarchitecturalbis-certificationindia

Standard · 1985

IS 6411 — Aluminium-Magnesium-Silicon Alloy Extruded Sections for Architectural Applications

Bureau of Indian Standards (BIS)

Specifies aluminium-magnesium-silicon (6xxx series, primarily 6063 and equivalents) extruded sections for architectural applications in India. Covers chemical composition, mechanical properties, dimensional tolerances, and surface finish requirements for sections intended for subsequent anodizing or powder coating. Frequently referenced jointly with IS 1868 in Indian fenestration and façade tenders.

[View source →](https://www.services.bis.gov.in/php/BIS_2.0/bisconnect/standard/standard_search_in_progress) · [Details](/reference/is-6411-1985)

Access: Available via BIS portal

6063architecturalextrusionsalloy-specsindia

Standard · 1983

IS 5523 — Methods of Test for Anodic Coatings on Aluminium and its Alloys

Bureau of Indian Standards (BIS)

Companion test-methods standard to IS 1868. Defines laboratory procedures for measuring anodic coating thickness (gravimetric and microscopic), assessing seal quality (dye-stain absorption and admittance), abrasion resistance, mass per unit area, and light-fastness on dyed coatings. Reaffirmed periodically. Used as the reference test method in BIS-certification audits of Indian anodizing plants.

[View source →](https://www.services.bis.gov.in/php/BIS_2.0/bisconnect/standard/standard_search_in_progress) · [Details](/reference/is-5523-1983)

Access: Available via BIS portal

thickness-measurementsealingabrasion-resistancedye-stainadmittanceqc-methods

Standard · 1983

IS 733 — Wrought Aluminium and Aluminium Alloy Bars, Rods and Sections (for general engineering)

Bureau of Indian Standards (BIS)

Indian specification for wrought aluminium and aluminium alloy bars, rods, and sections used in general engineering, including substrate stock for anodizing and surface finishing. Covers chemical composition, mechanical properties, and dimensional standards across a broader alloy range than IS 6411.

[View source →](https://www.services.bis.gov.in/php/BIS_2.0/bisconnect/standard/standard_search_in_progress) · [Details](/reference/is-733-1983)

Access: Available via BIS portal

alloy-specswrought-aluminiumindia