6063 aluminum alloy profile stretching

Appropriate stretching deformation can accelerate the aging process and slightly improve the strength of the aluminum profile. Excessive stretching deformation, besides causing “orange peel” texture, will also alter the cross-sectional dimensions and easily lead to over-aging, reducing the product’s strength. 

For 6063 alloy, the stretching elongation should be controlled between 0.5% and 2%, generally 0.5% is sufficient, and the maximum should not exceed 3%.