6061 Aluminum Plate: Composition, Properties, Strength, and Applications
About GNEE and 6061 Aluminum Plate
GNEE is a professional Chinese supplier of aluminum plate products, providing high-quality 6061 aluminum plates for global industrial markets. With stable production, strict quality control, and flexible customization, GNEE supplies 6061 aluminum plate widely used in automotive, construction, marine, and general engineering applications.
This article provides a complete overview of 6061 aluminum plate, including its alloy composition, material properties, strength levels, common uses, and selection guidelines.
What Is the Alloy Composition of 6061 Aluminum Plate?
The alloy composition of 6061 aluminum plate is carefully balanced to deliver excellent strength, corrosion resistance, and workability. Aluminum is the primary element, while magnesium and silicon serve as the main alloying elements.
6061 Aluminum Plate Chemical Composition Table
| Element | Typical Content (%) |
|---|---|
| Aluminum (Al) | ~97.9 |
| Magnesium (Mg) | ~1.0 |
| Silicon (Si) | ~0.6 |
| Copper (Cu) | ~0.28 |
| Chromium (Cr) | ~0.20 |
| Other Elements | Trace amounts |
The "6" in 6061 indicates it belongs to the 6000 series aluminum alloys, where magnesium and silicon are the dominant alloying elements.
The second digit "0" shows that no special impurity control is required, while the last two digits (61) simply identify the specific alloy within the series.
What Are the Key Characteristics of 6061 Aluminum Plate?
6061 aluminum plate is well known for its balanced performance and versatility. Its main characteristics include:
- Excellent weldability using common welding methods
- Good machinability for precision processing
- Strong corrosion resistance in atmospheric and marine environments
- High workability, making it easy to form and fabricate
Through tempering and heat treatment, the strength and corrosion resistance of 6061 aluminum plate can be further enhanced while reducing internal stress and brittleness.
What Are the Material Properties of 6061 Aluminum Plate?
The material properties of 6061 aluminum plate include mechanical, physical, and thermal characteristics that make it suitable for demanding structural applications.
6061 Aluminum Plate Mechanical & Physical Properties
| Property | Value |
|---|---|
| Density | 2.7 g/cm³ |
| Tensile Strength | 290 MPa (42,000 psi) |
| Yield Strength | 241 MPa (35,000 psi) |
| Elongation at Break | 12% |
| Modulus of Elasticity | 68.9 GPa |
| Shear Strength | 207 MPa |
| Fatigue Strength | 96.5 MPa |
| Brinell Hardness | 95 |
| Thermal Conductivity | 167 W/m·K |
| Melting Point | 582–652 °C |
| Poisson's Ratio | 0.33 |
These properties explain why 6061 aluminum plate is widely used where strength-to-weight ratio, durability, and thermal performance are critical.
Common Sizes of 6061 Aluminum Plate
GNEE supplies 6061 aluminum plate in standard and customized sizes to meet various project requirements.
6061 Aluminum Plate Size Range
| Thickness (mm) | Width (mm) | Length (mm) |
|---|---|---|
| 3 – 200 | 1000–2500 | 2000–8000 |
| Custom sizes | Available | Available |
Where Is 6061 Aluminum Plate Used?
Thanks to its mechanical strength and corrosion resistance, 6061 aluminum plate is widely applied across industries:
Automotive industry: structural parts, chassis components
Transportation: motorcycle frames, bicycle frames
Marine: yachts, scuba tanks, marine fittings
Construction: roofing sheets, support structures
Electrical applications: fittings and enclosures
Packaging: selected food container and foil applications
How Strong Is 6061 Aluminum Plate?
The strength of 6061 aluminum plate depends on its temper, such as 6061-O, 6061-T4, and 6061-T6.
For 6061-T6 aluminum plate:
Yield strength: ≥ 241 MPa (35,000 psi)
Tensile strength: ≥ 290 MPa (42,000 psi)
Yield strength defines the maximum stress before permanent deformation occurs, while tensile strength represents the point at which fracture happens.
How to Identify 6061 Aluminum Plate Grades?
Aluminum grades are identified by their numerical designation, such as 1100, 3003, and 6061. Each grade reflects its alloy system, strength level, and suitable applications.
Compared with 1100 aluminum:
6061 aluminum plate offers higher strength and heat-treatable properties
1100 aluminum is more economical but unsuitable for high-temperature or high-strength applications
Selecting the correct aluminum plate grade ensures both performance and cost efficiency.
FAQs About 6061 Aluminum Plate
What Is the Operating Temperature Range of 6061 Aluminum Plate?
Hot working: 260–372 °C
Annealing: ~413 °C for 2–3 hours
Aging: ~160 °C for 8 hours
Is 6061 Aluminum Plate Good for Welding?
Yes. 6061 aluminum plate is commonly welded using fillers such as 4043 or 5356. Using 6061 filler material is not recommended due to the risk of solidification cracking.
What Should Be Considered When Choosing an Aluminum Plate Grade?
Key factors include:
- Corrosion resistance
- Weldability
- Strength requirements
- Machinability
- Heat treatment capability
- End-use application
Conclusion: Choose GNEE for High-Quality 6061 Aluminum Plate
6061 aluminum plate remains one of the most versatile aluminum materials on the market. Its excellent balance of strength, corrosion resistance, weldability, and machinability makes it ideal for structural, automotive, marine, and construction applications.
GNEE supplies reliable 6061 aluminum plate in a wide range of sizes and tempers, with competitive pricing and fast delivery.
Contact GNEE today for technical support, specifications, or a quotation on 6061 aluminum plate.
