6061-T6 Aluminum Plate Overview – Fast Facts, Properties & Applications
GNEE is a professional Chinese supplier of aluminum plates, specializing in high-quality 6061-T6 aluminum plates for structural, marine, transportation, and precision engineering applications. In this article, we provide engineers and buyers with a clear, data-driven overview of 6061-T6 aluminum plate properties, temper options, and selection guidance to help you choose the right material efficiently.
Contact GNEE for certified 6061-T6 aluminum plate with global standards and fast delivery.
6061-T6 Aluminum Plate at a Glance (Fast Engineering Data)
When evaluating 6061-T6 aluminum plate, engineers usually want reliable numbers first. This alloy is widely recognized for its excellent balance of mechanical strength, corrosion resistance, weldability, and machinability, making it one of the most versatile aluminum plates on the market.
Key Specifications Snapshot – 6061-T6 Aluminum Plate
Typical room-temperature values; always confirm with mill test reports (MTRs).
| Property | Typical Value |
|---|---|
| Ultimate tensile strength | 290–310 MPa (42–45 ksi) |
| Yield strength (0.2% offset) | 240–270 MPa (35–39 ksi) |
| Elongation at break | ~10% |
| Brinell hardness | ~93 HBW |
| Fatigue strength (rotating beam) | ~96 MPa (14 ksi) |
| Shear strength | ~210 MPa (30 ksi) |
| Elastic modulus | ~69 GPa |
| Density | 2.70 g/cm³ |
| Thermal conductivity | ~167 W/m·K |
| Coefficient of thermal expansion (20–100 °C) | ~23 µm/m·K |
| Electrical conductivity | ~40% IACS |
| Common tempers | T6, T651, T6511 |
These values provide a practical starting point for structural calculations and preliminary design.
6061-T6 Aluminum Plate Corrosion Resistance, Weldability & Tempers
Corrosion Resistance of 6061-T6 Aluminum Plate
6061-T6 aluminum plate offers strong resistance to atmospheric corrosion, humidity, and mild marine environments. Compared with high-copper or high-zinc alloys, it performs reliably outdoors and responds very well to anodizing for enhanced surface protection.
Weldability of 6061-T6 Aluminum Plate
This alloy is easily welded using TIG (GTAW) or MIG (GMAW) methods. Engineers should note that the heat-affected zone (HAZ) experiences strength reduction relative to the base T6 material. Designs can compensate for this, or the assembly can be re-heat-treated if required.
Common Tempers of 6061 Aluminum Plate
Understanding temper differences helps optimize performance and dimensional stability:
6061-T6 aluminum plate: Solution heat-treated and artificially aged; the most common engineering temper
6061-T651 aluminum plate: T6 plus stress relief by stretching; ideal for CNC machining and thick plate
6061-T6511 aluminum plate: Stress-relieved extrusions with slight straightening allowance
Best-Fit Applications of 6061-T6 Aluminum Plate
Thanks to its balanced performance, 6061-T6 aluminum plate is widely used in:
Aerospace structural components and tooling plates
Automotive frames, truck bodies, and rail vehicles
Marine fittings, decks, and corrosion-resistant structures
Bridges, towers, platforms, and heavy structural parts
Robotic arms, electronics housings, and CNC-machined parts
It is also a popular choice for bicycle frames, camera rigs, and industrial fixtures where strength and machinability are equally important.
Is 6061-T6 Aluminum Plate Right for Your Project? (Checklist)
Ask the following questions during material selection:
Do I need an aluminum plate that welds well and machines cleanly?
Are yield strength around 250 MPa and tensile strength near 300 MPa sufficient?
Will anodizing or coating meet durability and appearance requirements?
Is stress-relieved plate (T651) available in my required thickness?
Do I need higher strength (7075) or better extrusion performance (6082) instead?
If most answers are "yes," 6061-T6 aluminum plate is a strong and economical choice.
6061-T6 Aluminum Plate Composition & Heat Treatment Science
6061 belongs to the Al-Mg-Si family. Its strength comes primarily from precipitation hardening of the Mg₂Si phase, formed during solution heat treatment and artificial aging (T6).
Chemical Composition of 6061 Aluminum Plate (Typical, wt.%)
| Element | Content Range |
|---|---|
| Aluminum (Al) | Balance (≈95.8–98.6) |
| Magnesium (Mg) | 0.8–1.2 |
| Silicon (Si) | 0.4–0.8 |
| Copper (Cu) | 0.15–0.40 |
| Chromium (Cr) | 0.04–0.35 |
| Iron (Fe) | ≤0.70 |
| Manganese (Mn) | ≤0.15 |
| Zinc (Zn) | ≤0.25 |
| Titanium (Ti) | ≤0.15 |
Magnesium and silicon dominate strengthening, while controlled Cu and Cr improve mechanical stability without sacrificing corrosion resistance.
Mechanical Properties of 6061-T6 Aluminum Plate
| Property | Typical Value |
|---|---|
| Tensile strength | 290–310 MPa |
| Yield strength | 240–270 MPa |
| Elongation | ~10% |
| Hardness | ~93 HBW |
| Modulus of elasticity | ~69 GPa |
Standard Size Range – 6061-T6 Aluminum Plate from GNEE
| Item | Range |
|---|---|
| Thickness | 6 mm – 300 mm |
| Width | Up to 2600 mm |
| Length | Up to 12000 mm |
| Tempers | T6, T651 |
| Standards | ASTM B209, EN AW-6061, ISO |
Custom cutting, machining, and certification are available upon request.
Conclusion – Why Choose 6061-T6 Aluminum Plate from GNEE
6061-T6 aluminum plate combines dependable strength, excellent corrosion resistance, good weldability, and wide availability. Its balanced performance makes it ideal for structural, transportation, marine, aerospace, and general engineering applications where reliability and cost efficiency matter.
Contact GNEE today to request a quote, datasheet, or mill test certificate for premium 6061-T6 aluminum plate tailored to your project requirements.
