Aluminum Flat Bar High Quality Aluminium Square Rod 6061 T6 Aluminum Rectangular Flat Bar

Aluminum Square Bar - Product Technical Supplement

Our aluminum square bars are manufactured using high-purity primary aluminum ingots (Al ≥ 99.7%) through a fully controlled process consisting of continuous casting, hot extrusion, stretch straightening, artificial aging, and precision sawing/milling.

Key Process Features:

Extrusion: Forward hot extrusion on 25MN–55MN large-scale oil hydraulic presses with extrusion cylinder temperature variation controlled within ±5°C, resulting in refined grain structure, dense microstructure, and absence of visible extrusion lines.
● Heat Treatment: All profiles undergo mandatory T5/T6 artificial aging to eliminate internal stress, ensuring stable metallographic structure and highly consistent mechanical properties.
● Finishing: Multi-roller stretcher straightening combined with six-face precision milling guarantees dimensional tolerances within ±0.10 mm, straightness ≤ 0.3 mm/m, and defect-free surfaces (no pull marks, scratches, or orange-peel effect).
● Quality Control: Full batch traceability from melt to finished product. Equipped with Zeiss CMM, imported direct-reading spectrometer, eddy-current flaw detector, and ultrasonic testing equipment. Each shipment is accompanied by material certificate, dimensional inspection report, and NDT report, fully compliant with requirements of aerospace, rail transit, precision machinery, and marine applications.

Standard Delivery Conditions: 6061-T6, 6082-T6, 6063-T5/T6, 5083-H112, 7075-T6, etc. Custom dimensions, fixed lengths, and further machining services are available per customer drawings.
We specialize in supplying reliable, high-performance aluminum square bars to customers with stringent requirements on material consistency and mechanical properties, including rail vehicles, industrial automation equipment, marine engineering, and defense-related applications.