What mandatory tests are required by this standard?

Chemical composition analysis and tensile testing (to determine ultimate tensile strength, 0.2% proof stress, and elongation) are mandatory.

How is proof stress measured for these alloys?

It is measured at a 0.2% non-proportional elongation (offset) during the tensile test.

Does this standard apply to architectural aluminium sections?

While it covers sections for general engineering, specific architectural profiles and extruded shapes often follow specialized standards with tighter finish and dimensional requirements, such as IS 1285.

IS 735

: 1975

Wrought Aluminium and Aluminium Alloy Bar, Rod and Section for General Engineering Purposes - Specification

CurrentSpecializedSpecificationMaterials Science · Aluminium and Non-Ferrous Metals

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This standard specifies the requirements for wrought aluminium and aluminium alloy bars, rods, and sections intended for general engineering purposes. It establishes guidelines for chemical composition, mechanical properties, and dimensional tolerances to ensure consistency in manufacturing and procurement.

Covers the requirements for wrought aluminium and aluminium alloy bars, rods, and sections for general engineering applications.

Quick Reference Values

proof stress offset0.2%

gauge length for elongation5.65 √So

Practical Notes

Ensure the correct alloy designation and temper condition (e.g., O for annealed, M for as-manufactured) are explicitly specified during procurement, as mechanical properties vary significantly based on temper.

Always verify dimensional tolerances and straightness specifications for structural sections to avoid downstream assembly and machining issues.