This standard specifies the chemical composition, mechanical properties, and dimensional tolerances for wrought aluminium and aluminium alloy bars, rods, and sections used in general engineering. Engineers use it to procure, specify, and test aluminium extrusions and solid sections to ensure adequate strength, purity, and appropriate temper conditions.
Covers the requirements for wrought aluminium and aluminium alloy plate, sheet, and strip used for general engineering purposes.
Quick Reference Values
Gauge length for tensile testing5.65 √A (where A is cross-sectional area)
Alloy 64430 (HE30) WP Temper Min UTS295 MPa
Alloy 64430 (HE30) WP Temper Min 0.2% Proof Stress255 MPa
Alloy 19500 (O Temper) Max UTS100 MPa
Standard testing temperatureRoom temperature (approx. 27°C)
Practical Notes
Always specify both the alloy designation (e.g., 64430) and the required temper condition (e.g., WP or O) during procurement, as the mechanical properties vary drastically based on heat treatment.
Yield stress in aluminium alloys is usually measured as 0.2 percent proof stress because aluminium generally lacks a distinctly marked yield point.
For aluminium sheets and strips, refer to IS 737 instead of IS 733.