Similar International Standards
ASTM B308/B308M - 22ASTM International, USA
HighCurrent
Standard Specification for Aluminum-Alloy 6061-T6 Standard Structural Profiles
Specifies dimensions, tolerances, and properties for standard aluminium structural shapes including I-beams, using alloy 6061-T6.
EN 755-9:2016European Committee for Standardization (CEN), Europe
HighCurrent
Aluminium and aluminium alloys - Extruded rod/bar, tube and profiles - Part 9: Profiles, tolerances on dimensions and form
Defines the specific tolerances on dimensions and form for extruded aluminium alloy profiles, including I-beams.
ANSI H35.2-2017The Aluminum Association / ANSI, USA
MediumCurrent
American National Standard Dimensional Tolerances for Aluminum Mill Products
Provides a comprehensive set of standardized dimensional tolerances for all aluminium mill products, including extruded I-beams.
BS 1161:1977British Standards Institution (BSI), UK
LowWithdrawn
Specification for aluminium and aluminium alloy sections for structural purposes
Historical standard that specified dimensions and properties for aluminium sections, similar in intent to the 1985 Indian Standard.
Key Differences
≠IS 5384:1985 is a withdrawn standard, while its international counterparts (ASTM, EN) are actively maintained and updated, reflecting modern manufacturing capabilities and material science.
≠The specific I-beam designations and their corresponding dimensions (e.g., ISALB 100, ISALB 125) are unique to the Indian market and do not have direct dimensional equivalents in ASTM or EN standards, which have their own series of standard shapes.
≠Alloy designations differ. IS 5384 uses Indian standard designations like 65032 (WP) or 64430 (WP), whereas international standards use AA (e.g., 6061-T6) or EN AW (e.g., EN AW-6061 T6) nomenclature.
≠Dimensional and form tolerances in the more recent EN and ANSI standards are generally tighter and more detailed than those specified in the 1985 version of the Indian standard.
Key Similarities
≈All standards aim to standardize the dimensions, tolerances, and sectional properties of extruded aluminium I-beams to ensure predictable structural performance and interchangeability.
≈The fundamental geometric parameters defined for the I-beam cross-section are the same across all standards: overall depth, flange width, web thickness, flange thickness, and fillet radii.
≈The primary material specified or recommended is typically a 6xxx series (Al-Mg-Si) aluminium alloy in a heat-treated temper (like T6), which offers a good balance of strength, extrudability, and corrosion resistance for structural applications.
≈All standards define requirements for the same types of manufacturing tolerances, including cross-sectional dimensions, straightness, and twist, to control the quality of the finished product.