Henan Gnee New Material Co., Ltd. is one of the most reliable manufacturers and suppliers of 6061 Aluminum Flat Bar (AA 6061 / UNS A96061) — T6 / T651, ASTM B221 in China. With abundant experience, we warmly welcome you to wholesale high quality 6061 Aluminum Flat Bar (AA 6061 / UNS A96061) — T6 / T651, ASTM B221 in stock here from our factory. Good service and reasonable price are available.
6061 aluminum is a 6xxx-series heat-treatable structural alloy (Al-Mg-Si). In the T6 temper it combines good strength, light weight, machinability, and corrosion resistance, which makes it one of the most widely used aluminum alloys for machined parts and structural fabrication. GNEE supplies 6061 aluminum flat bar in standard and custom sizes for machining, tooling, automotive, marine, and general engineering buyers worldwide. Send us your temper, thickness, width, length, and order quantity for a quote - we reply with a full quotation (price, lead time, freight terms) within one business day.
How 6061 Aluminum Is Named
The same alloy has different codes in different naming systems. Knowing all of them helps you match the spec to the right product on any datasheet or purchase order.
| Naming system | Designation | Notes |
|---|---|---|
| Aluminum Association (AA) | 6061 | Most common in North America |
| Unified Numbering System (UNS) | A96061 | Used in ASTM standards |
| European Norm (EN) | EN AW-6061 / Al Mg1SiCu | Wrought; chemical symbol form |
| China GB/T 3190 | 6061 | Wrought aluminum - chemical composition |
| Japan JIS | A6061 | Per JIS H4040 |
Note on the previous standards listing: this page previously listed ASTM A479 / A276 / A484 / A582 and GB/T 1220 / GB 4226. Those are stainless steel standards and do not apply to aluminum. The correct standards for 6061 aluminum flat bar are ASTM B221 (extruded bars, rods, wire, profiles, and tubes) or ASTM B211 (rolled or cold-finished bar, rod, and wire), plus EN 755 (extruded) and GB/T 3191 (extruded aluminum bars).
Chemical Composition (per GB/T 3190 / AA 6061, % by weight)
| Element | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Others (each) | Others (total) | Al |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 0.40 | - | 0.15 | - | 0.80 | 0.04 | - | - | - | - | remainder |
| Max | 0.80 | 0.70 | 0.40 | 0.15 | 1.20 | 0.35 | 0.25 | 0.15 | 0.05 | 0.15 | remainder |
Physical properties (typical): density ≈ 2.70 g/cm³; melting range ≈ 582–652 °C; elastic modulus ≈ 68.9 GPa; thermal conductivity ≈ 167 W/(m·K); electrical conductivity ≈ 43% IACS. Non-magnetic.
Mechanical Properties (typical, not for design)
| Temper | Tensile Strength (MPa) | Yield Strength, 0.2% (MPa) | Elongation A50 (%) | Hardness (HB) |
|---|---|---|---|---|
| O (annealed) | ~150 | ~83 | ~18 | ~30 |
| T4 | ~210 | ~110 | ~14 | ~65 |
| T6 | 290 min (typ. 310) | 240 min (typ. 276) | ≥ 8–10 | ~95 |
| T651 | 290 min (typ. 310) | 240 min (typ. 276) | ≥ 10 | ~95 |
Values are typical ranges from ASTM B221 and 6061 reference data. Minimum T6/T651 figures are per ASTM B221 for extruded bar (290 MPa tensile / 240 MPa yield). They are not for design. Mill figures per heat are reported on the Mill Test Certificate (MTC) shipped with each lot.
6061 is heat-treatable. It is strengthened by solution heat treatment plus artificial aging (T6). T651 is T6 with stress relieving by stretching (1–3% permanent set), which improves dimensional stability during machining - the preferred temper for precision CNC work.
6061 Aluminum Flat Bar Specification
| Item | Value |
|---|---|
| Product | 6061 aluminum flat bar (rectangular bar / flat stock) |
| Alloy / Grade | 6061 (6xxx series, Al-Mg-Si). Other 6xxx grades (6063, 6082) and 2xxx/7xxx (2011, 2024, 7075) on request. |
| Temper | T6, T651, T4, O (per order) |
| Thickness | 2 – 250 mm (standard); thinner gauges on request |
| Width | 10 – 500 mm (standard); wider sizes on request |
| Length | 1000 – 6000 mm (standard 3 m / 6 m); cut-to-length on request |
| Surface | Mill finish (standard); anodized, brushed, polished, powder coated on request |
| Tolerances | Per ASTM B221 / GB/T 3191 (thickness, width, straightness), or as agreed in the order confirmation |
| Standards (compliant) | ASTM B221, ASTM B211, EN 755, EN 573-3, GB/T 3191, GB/T 3190 |
| HS Code | 7604.29 (aluminum alloy bars, rods, and profiles) - for customs reference |
| Origin | China |
| Loading ports | Tianjin, Qingdao (other ports on request) |
| MOQ | 500 kg (flexible); smaller trial quantities considered case by case |
| Lead time | 15 – 30 days after order confirmation, subject to quantity and specification |
| Price terms | FOB / CIF / CFR (Incoterms 2020) |
| Payment terms | T/T (30% deposit, 70% balance against B/L copy) · L/C at sight |
| Certificates | Mill Test Certificate per EN 10204 3.1, shipped with each lot. Third-party inspection (SGS, BV) on request. |
| Packaging | Export seaworthy: bundled and steel-band strapped, on wooden pallets; moisture-proof film on request |
What 6061 Aluminum Flat Bar Is Used For
6061 flat bar is the standard "structural all-rounder" - strong enough to carry load, but light and easy to machine. Typical buyers use it for:
CNC machined parts - brackets, mounting plates, couplings, spacers, housings, fixtures
Tooling and jigs - machine fixtures, alignment bars, assembly tooling
Automotive and transport - truck/trailer fittings, frames, brackets
Marine hardware - boat fittings, deck hardware, structural trim (anodize for salt-water exposure)
Structural fabrication - frames, supports, base plates, rail components
General engineering - machine guards, conveyor parts, prototype parts
6061 flat bar is not the right choice when you need maximum formability (deep drawing or tight-radius bending). 6061 in T6 has limited formability - it is meant for machining and structural use, not heavy forming. For bending-intensive work, consider 6061-O/T4 (formed, then aged to T6) or a 5xxx-series alloy such as 5052 or 5083.
Manufacturing and Surface Treatment
6061 flat bar is produced by extrusion (most common) or rolling/cold finishing. Mill finish is the as-produced surface. Buyers who need further finishing choose from:
Mill finish - as-extruded or as-rolled, slight surface variation
Anodized - clear or colored; improves corrosion resistance and appearance
Brushed / polished - decorative and architectural use
Powder coated - color and outdoor durability
Precision saw cut / machined - cut-to-length, drilling, tapping on request
If you have a specific surface or machining requirement, send it with the RFQ so we confirm availability before quoting.
Packaging and Shipping
Each flat bar bundle is steel-band strapped and loaded on wooden pallets or in wooden crates, suitable for container loading. Bars are separated with interleaving where surface protection is required. We can also pack to your own spec if your freight forwarder or warehouse needs a different setup - please tell us at the time of order. Loading is at Tianjin or Qingdao port; other ports (Shanghai, Ningbo, etc.) are available on request.
Quality, Certificates, and Inspection
Mill Test Certificate (MTC) per EN 10204 3.1 is shipped with every lot. The MTC lists heat number, chemical composition, and mechanical properties from the actual production heat.
Third-party inspection by SGS, BV, or another nominated agency is available on request and at buyer's cost.
Country of origin: China. Form A / Form E / Form FTA certificates of origin issued on request.
Lead Time and Order Workflow
Inquiry - Send temper, thickness, width, length, surface, quantity, destination port, and required certificates. We reply within one business day.
Quotation - Price, lead time, and freight terms (FOB / CIF / CFR) confirmed in writing.
Deposit - 30% T/T deposit on order confirmation.
Production - 15–30 days for stock tempers and sizes; longer for custom temper, size, or surface treatment.
Pre-shipment - MTC and inspection report shared; balance payment against B/L copy.
Shipment - FOB Tianjin / Qingdao, or CIF / CFR to your destination port.
FAQ
What is the MOQ? 500 kg. For trial orders or first-time customers, we are flexible on smaller quantities - talk to us before placing the order.
What is the lead time? 15–30 days for standard stock sizes and tempers. Custom tempers, special sizes, or surface treatments may take longer. The exact lead time is confirmed with your quotation.
Which temper should I order for machining? T651. It is T6 with stress relieving by stretching, so it stays dimensionally stable during CNC machining and resists warpage. T6 is fine for general structural and welded parts; use O or T4 if you need to bend or form first, then age to T6.
Is 6061 heat-treatable? Yes. 6061 is a heat-treatable 6xxx-series alloy. T6 = solution heat treated + artificially aged. This is different from 1xxx and 5xxx alloys, which are non-heat-treatable.
Can I get a sample? Yes. Standard stock samples are free of charge; you cover the courier. Custom-cut or machined samples may carry a small fee.
Do you provide Mill Test Certificates? Yes. Every shipment comes with an MTC per EN 10204 3.1. Third-party inspection (SGS, BV) is available on request.
What payment terms do you accept? T/T (30% deposit, 70% balance against B/L copy) and L/C at sight. Other terms discussed case by case for repeat customers.
Can you do custom sizes? Yes. Send temper, thickness, width, length, and order quantity. We will quote against your specification.
Which port do you ship from? Tianjin and Qingdao are our main loading ports. Shanghai, Ningbo, and other ports are available on request.
Get a Quote
Send the following and we will reply with a full quotation within one business day:
Temper: e.g. 6061, T651
Thickness × Width × Length: mm
Surface treatment: mill finish, anodized, etc.
Quantity: kg or tons
Destination port: for CIF / CFR quotes
Required certificates: MTC, Form A / E / FTA, third-party inspection
Our Company
The superior geographical environment and convenient transportation conditions help products quickly enter the international market.
Hot Tags: 6061 Aluminum Flat Bar (AA 6061 / UNS A96061) — T6 / T651, ASTM B221, China 6061 Aluminum Flat Bar (AA 6061 / UNS A96061) — T6 / T651, ASTM B221 manufacturers, suppliers, factory, Aluminum 6061 Flat Rod, T6 Aluminum Hot Flat Bar, Flat Rectanguar Aluminum Bar, 40mm X 10mm Aluminium Flat Bar, Aluminum Flat Bar 1 4, Aluminum Flat Bar 6000 Series