6061 T6 Aluminium Sheet

Certified ASTM B209 6061 Aluminum Plate

GNEE Aluminum is a premier manufacturer and large-scale supplier of 6061-T6 Aluminum Sheet and Plate. As one of the most versatile heat-treatable alloys, our 6061 aluminum provides a superior blend of high strength, excellent corrosion resistance, and exceptional weldability. We specialize in 6061-T651 stress-relieved plates, ensuring zero deformation during high-speed CNC machining.

 

Why Professionals Choose GNEE 6061 Aluminum

Zero-Deformation Machining 

Our 6061-T651 plates undergo a controlled stretching process after heat treatment. This eliminates residual internal stresses, meaning the plate stays perfectly flat even after heavy CNC milling or deep pocketing.

 

Superior Surface Quality

GNEE 6061 aluminum sheets are free from pits, scratches, and oxidation. For precision components, we offer fine-milled surfaces with high-precision flatness control (within 0.5mm/m).

 

Excellent Weldability & Corrosion Resistance

6061 is highly weldable using TIG or MIG techniques and offers excellent resistance to atmospheric corrosion and seawater, making it the "gold standard" for structural and marine components.

 

 

6061 T6 Aluminium Sheet Specifications

Item	6061 T6 Aluminium Sheet
Standard	GB/T3190-2008, GB/T3880-2006, ASTM B209, JIS H4000-2006, etc.
Material	1050, 1060, 2A14, 3003, 3103, 4032, 5454, 5754, 5056, 5082, 5086, 6061, 6060, 6082, 7075, 7475
Size	Thickness	0.5-200mm
	Width	100-2000mm
	Length	2000 mm, 2440 mm, 6000 mm, or as required.
Quality control	Mill Test Certification is supplied with shipment,Third Part Inspection is acceptable.
Surface	Bright, polished, hairline, brush, sandblast, checkered, embossed, etching, etc.
Trade conditions
Trade terms	Price term	Ex-Work, FOB, CNF, CFR, etc.
	Payment Term	TT,L/C,western Union, etc.
Delivery time	1. The products in stock will be delivered immediately upon receipt of the payment. 2. According to the order quantity, prompt delivery.
Package	Standard export package, such as a wooden box or as required.

 

Chemical composition of 6061 aluminum alloy

Values below are the specification limits per ASTM B209 and EN 573-3 for alloy 6061. It is an Al-Mg-Si alloy with small copper and chromium additions for strength and grain control.

Element	Content (%)
Aluminum (Al)	Remainder
Magnesium (Mg)	0.80 – 1.20
Silicon (Si)	0.40 – 0.80
Copper (Cu)	0.15 – 0.40
Chromium (Cr)	0.04 – 0.35
Manganese (Mn)	≤ 0.15
Iron (Fe)	≤ 0.70
Zinc (Zn)	≤ 0.25
Titanium (Ti)	≤ 0.15
Others (each / total)	≤ 0.05 / ≤ 0.15

Equivalent designations: UNS A96061 · EN AW-6061 (AlMg1SiCu, material 3.3211) · JIS A6061 · ISO AlMg1SiCu · GB/T 3190 / GB/T 3880 grade 6061 (composition and mechanical values are consistent with ASTM B209 for this four-digit alloy).

 

Mechanical properties of 6061-T6 aluminum plate and sheet

6061 is heat-treatable. The table shows ASTM B209 values for sheet and plate; T6 minima apply to thickness up to about 12.5 mm, and plate up to 150 mm carries the same tempers with thickness-dependent minima. O and T4 are shown as typical ranges for reference. Confirm exact values against the Mill Test Certificate (MTC).

Temper	Tensile strength (MPa)	Yield strength, min (MPa)	Elongation, min (%)
O (annealed)	~150 max	~85 max	16
T4 (solution + natural age)	205	110	14
T6 / T651	290 (typ. ~310)	241 (typ. ~276)	8 – 10

Values are ASTM B209 / EN 485-2 specification ranges and minima; actual figures depend on thickness, direction and temper - confirm with our quotation and the MTC. T651 has the same specified strength as T6; the difference is residual stress, not strength.

 

Physical properties of 6061-T6 aluminum

Property	Typical value
Density	2.70 g/cm³
Melting range	582 – 652 °C
Modulus of elasticity	68.9 GPa
Thermal conductivity	~167 W/(m·K)
Coefficient of thermal expansion	~23.6 × 10−6/K
Electrical conductivity	~43 % IACS
Brinell hardness	~95 HB
Poisson's ratio	0.33

 

Get a Live Quote for 6061-T6 Aluminum Plate

Contact our technical sales team for the latest LME-based pricing and custom fabrication options. We provide free samples for quality verification.

Contact now

 

 

Applications of 6061-T6 aluminum plate and sheet

6061-T6 is chosen where a part must be both structurally capable and easy to machine or weld. Its combination of strength, workability and corrosion resistance suits a wide range of engineering and fabrication work.

Machined & structural parts

CNC machined components, machine bases and frames, fixtures, jigs, tooling plates, enclosures and housings, and robotics or automation structures where flatness and tight tolerance matter.

Transport

Truck and trailer frames, automotive brackets and structural parts, bicycle frames, and rail or bus interior structures where weight saving and weldability are needed.

Welded structures & general fabrication

Walkways, platforms, handrails, supports, pipe racks, tanks and welded assemblies for industrial plants, and general structural fabrication.

Marine & architectural

Small boat hulls and decks, marine fittings, and anodized architectural trim, window walls and consumer products where a clean, durable finish is required.

Aerospace & defense (secondary)

Non-critical structural fittings and brackets; for primary airframe structure, confirm the specific temper and certification with your drawing before ordering.

 

Welding and fabrication of 6061 aluminum

Welding: good with standard MIG (GMAW) and TIG (GTAW). Use 4043 filler for good flow and color match, or 5356 when higher joint strength or better color after anodizing is needed. The heat-affected zone loses some strength versus the parent T6 material, so design welded joints around the post-weld properties or reheat-treat where the specification allows.

Machining: excellent in T6 / T651. Use sharp carbide tools, chip breakers or suitable coolant to control long chips; T651 is preferred for parts with large material removal to avoid post-machining warpage.

Forming: T6 bends and forms reasonably for moderate radii; O temper is used where deep drawing or severe forming is required, often followed by heat treatment.

Heat treatment: T6 is solution heat treated and artificially aged; O and T4 are the soft tempers. Do not anneal or reheat parts that must keep T6 strength unless re-solution treating and aging afterward.

 

Anodizing and surface options for 6061 aluminum

6061-T6 anodizes well and gives a uniform, durable clear, black or colored film, which is why it is widely used for architectural trim and consumer products. For the most consistent color, specify anodizing-quality material and agree the finish on a sample before production.

Finishes: mill finish, brushed, polished, color-anodized, or PVC/PE film protected.

Coating: fluorocarbon (PVDF) and polyester coil coating where a specified color is required for architectural exposure.

 

Processing services for 6061 aluminum

Besides supplying mill-format coil and plate, GNEE offers processing to help you receive parts closer to finished size:

Cutting & slitting: shear, slit or saw coil/sheet and plate to your required dimensions.

CNC & punching: precision machining and piercing of plates for frames, fixtures and enclosures (T651 recommended for tight-tolerance parts).

Perforating: standard and custom hole patterns for panels and screens.

Chamfering & edge prep: deburring, beveling and edge finishing for welding or assembly.

Bending & forming: brake-press bending and roll forming of sheet and plate; we advise temper and bend radius by thickness.

Welding & assembly: MIG/TIG welding of 6061 using 4043/5356 filler for frameworks and welded parts.

Surface treatment: brushing, anodizing, coating (PVDF/polyester) and protective film application.

Tell us your drawing or finish requirement and we will quote the alloy, temper, size and processing together.

 

 

 

 

GNEE has supplied aluminum products since 2008 and now exports to 100+ countries and regions.

Common tempers and sizes are kept in stock; both small and large orders are accepted with a flexible MOQ.

Standard lead time is 15–30 days; each order ships with an EN 10204 3.1 Mill Test Certificate, and third-party inspection (e.g. SGS) can be arranged.

Our technical team helps select the right alloy, temper and finish for your application and provides drawings-based quotations.

Professional Packaging & Global Logistics

To ensure the high surface finish of our 6061-T6 sheets, we implement a comprehensive protection system:

Surface Shielding: Option for 70μm/100μm Blue Laser Film or neutral PE film.

Anti-Oxidation: Multi-layer waterproof kraft paper wrapping with desiccants.

Heavy-Duty Crating: ISPM-15 certified reinforced wooden pallets with edge protectors to prevent impact damage.

FAQ

What is 6061-T6 aluminum?

6061 is a heat-treatable 6xxx alloy whose main elements are magnesium and silicon (Al-Mg-Si). In the T6 temper it is solution heat treated and artificially aged, which gives a good balance of strength, machinability and corrosion resistance. It is one of the most widely used structural aluminum alloys for machining, welding and general fabrication.

What is the difference between 6061-T6 and 6061-T651?

T651 is the T6 condition plus a controlled stretching step (about 1.5-3% permanent set) after quenching and before aging. This relieves internal stress, so T651 plate stays flatter and warps far less during heavy CNC machining or deep pocketing. For most machined plate parts T651 is the preferred temper; for lightly machined or formed parts T6 is fine.

What are the mechanical properties of 6061-T6?

Per ASTM B209, 6061-T6 sheet and plate show a minimum tensile strength of 290 MPa (42 ksi) and a minimum yield of 241 MPa (35 ksi), with elongation of 8-10% depending on thickness. Typical values are about 310 MPa tensile and 276 MPa yield with 12% elongation. Confirm the exact figures on the Mill Test Certificate for your heat.

Is 6061-T6 good for CNC machining?

Yes. 6061-T6 is one of the most commonly machined aluminum alloys: it cuts cleanly, gives a good surface finish and holds tolerances well. Chip control matters at low feed, so use sharp carbide tools, chip breakers or a suitable coolant. T651 is the usual choice when a part will have large material removed, to avoid post-machining movement.

Can 6061-T6 be welded?

Yes, 6061 welds well with standard MIG (GMAW) and TIG (GTAW). Use 4043 filler for good flow and color match, or 5356 when higher joint strength or better color after anodizing is needed. Note that the heat-affected zone loses some strength compared with the parent T6 material; for load-bearing welds, design around the welded-zone properties or reheat-treat where the specification allows.

Does 6061-T6 anodize well?

Yes. 6061-T6 takes clear, black and color anodizing well and gives a uniform, durable film, which is why it is widely used for architectural trim and consumer products. For the most consistent color, specify anodizing-quality material and agree the finish on a sample before production.

Which tempers of 6061 are available besides T6?

Besides T6 and T651, GNEE can supply O (annealed, lowest strength and highest formability) for deep drawing and T4 (solution heat treated, naturally aged) for parts that are formed before final treatment. Other 6xxx tempers such as T5 or T6511 are available on request for specific forms.

What sizes and tolerances does GNEE supply for 6061 aluminum?

GNEE supplies 6061 as coil, sheet and plate: thickness 0.5–200 mm (sheet/coil to about 6 mm; thicker plate on request), width up to 2650 mm, length up to 12000 mm or cut-to-length, in common stock sizes such as 1250×2500 and 1500×3000 mm. Dimensional tolerances follow ASTM B209 / EN 485-2.

Hot Tags: 6061 t6 aluminium sheet, China 6061 t6 aluminium sheet manufacturers, 6 series Aluminum Plate, 6061 aluminum sheet, 6063 Aluminum Plate, 6063 aluminum sheet, 6082 Aluminum Plate, Aluminium tooling plate 6082