Which aluminium alloy is most recommended for architectural solid extrusions?

Alloy 63400 (formerly HE9) is the industry standard due to its excellent extrudability and finishing characteristics.

What do the temper designations W and WP mean?

W stands for solution heat-treated, while WP stands for solution heat-treated and artificially aged (fully heat-treated).

Does this standard cover aluminium tubes or hollow sections?

No, IS 2419 specifically covers solid extruded sections only.

IS 2419

: 1982

Wrought Aluminium and Aluminium Alloy Solid Extruded Sections for Architectural Purposes - Specification

CurrentSpecializedSpecificationBIMArchitectural · Aluminium and Non-Ferrous Metals

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This standard specifies the requirements for solid extruded sections of wrought aluminium and aluminium alloys intended primarily for architectural applications such as doors, windows, curtain walls, and interior fit-outs. It covers chemical composition, mechanical properties, and testing protocols.

Specifies the requirements for solid extruded sections of wrought aluminium and its alloys used in architectural applications.

Quick Reference Values

Alloy 63400 HE9 WP Tensile Strength190 MPa (Min)

Alloy 63400 HE9 WP Proof Stress160 MPa (Min)

Alloy 63400 HE9 WP Elongation7 percent (Min)

Alloy 63400 HE9 W Tensile Strength130 MPa (Min)

Practical Notes

Alloy designation 63400 (old HE9) in WP temper is the most commonly specified material for architectural profiles due to its optimal balance of strength, surface finish, and corrosion resistance.

If the sections are intended to be anodized, 'anodizing quality' must be explicitly specified at the time of inquiry or order to ensure appropriate surface finish controls.

This code specifically deals with solid sections. For hollow extruded architectural sections, refer to complementary standards like IS 3965.