6061 Aluminum Flat Bar is a versatile heat-treatable 6xxx alloy offering an excellent strength-to-weight ratio, good weldability, and corrosion resistance. Commonly supplied in T6, it suits structural, machined, and transport parts.
Available forms: flat bar
Common tempers: O / T4 / T6 / T651 / T6511
Processing support: CNC machining / welding / anodizing / cutting
Quality documents: MTC report with every order
6061 Aluminum Flat Bar is made from 6061, one of the most widely used heat-treatable aluminum alloys. Its balanced mix of magnesium and silicon gives good strength after the T6/T651 aging treatment while keeping the material easy to machine and weld.
In T6 condition it delivers strong structural performance, which is why it appears across architecture, transport, and general engineering.
| Parameter | Typical Range |
|---|---|
| Thickness | 3–200 mm |
| Width | 10–600 mm |
| Length | up to 6000 mm (cut to size) |
| Tempers | O, T4, T6, T651, T6511 |
| Standards | ASTM B221, EN 755, GB/T 6892 |
Custom thickness and width combinations can be reviewed on enquiry.
| Designation System | Equivalent |
|---|---|
| AA 6061 | EN AW-6061 |
| UNS A96061 | ISO Al-Mg1SiCu |
Common standards: ASTM B221, ASTM B211, EN 755, GB/T 6892.
| Element | Composition (wt%) |
|---|---|
| Si | 0.40–0.80 |
| Fe | 0.70 max |
| Cu | 0.15–0.40 |
| Mn | 0.15 max |
| Mg | 0.80–1.20 |
| Cr | 0.04–0.35 |
| Zn | 0.25 max |
| Ti | 0.15 max |
| Others (each) | 0.05 max |
| Others (total) | 0.15 max |
| Al | Balance (remainder) |
Values below are typical for extruded or drawn product and should be confirmed against the mill test certificate for the specific temper and section.
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| O | 124 | 55 | 25 |
| T4 | 207 | 110 | 18 |
| T6 | 310 | 276 | 12 |
| T651 | 310 | 276 | 12 |
T6 flat bar carries real structural load at a fraction of steel’s weight.
Cuts and drills cleanly, ideal for CNC-produced brackets and parts.
Joins reliably by TIG/MIG; design around post-weld temper loss.
Handles atmospheric and mild marine exposure with optional anodizing.
The following guides cover selection, temper comparison, and machining notes for this alloy. Confirm the live URLs before publishing — replace any external references with Linsy-owned blog links where available.
Yes. It is supplied in O, T4, T6, T651, and T6511; T6/T651 are the structural tempers.
T651 is stress-relieved by stretching after aging, giving better dimensional stability and less warping after machining.
Yes. Standard and custom lengths are supplied cut to your dimension list.
MOQ depends on form and temper. Standard sections and tempers can start from a few hundred kilograms; custom-dimension or special-temper orders are reviewed case by case.
For stock-available tempers, lead time is typically 10–30 days. Custom extrusion or heat-treated conditions may take up to 60 days. Confirm with our sales team at enquiry.
Yes. We offer cutting, CNC machining, welding, anodizing, and polishing. Provide your drawings or dimension list with the enquiry.
Every order ships with an MTC. SGS or other third-party test reports can be arranged on request.
Linsy Advantages
Linsy Aluminum is a leading supplier of aluminum processing products, serving diverse industries including aerospace, general engineering, automotive, marine, shipbuilding and other specialized industrial applications.
We are committed to maintaining the highest standards of quality and environmental responsibility, as demonstrated by our certifications: ISO 9001:2008， ISO 14001:2004 and SGS.
