6061-T651 Super Flat Aluminum Plate

6061-T651 Super Flat Aluminum Sheet Introduction
1. Material Overview
6061-T651 is a high-strength aluminum alloy that has been heat-treated and tensile-processed to provide excellent overall performance.The T651 condition indicates that the material has been solution-treated, artificially aged, and tensile-corrected to provide the following characteristics:
High strength: tensile strength up to 310 MPa, moderate hardness.
Good corrosion resistance: especially suitable for use in harsh environments.
Excellent machinability: easy to cut, weld and mold.
Lightweight: density of 2.7 g/cm³, suitable for lightweight design.
Ultra-flat surface: Precision machined with extremely high flatness, surface roughness is usually at Ra ≤ 0.4 μm.

2. Chemical composition
The main chemical composition of 6061 aluminum alloy includes:
Aluminum (Al): about 95-98%.
Magnesium (Mg): 0.8%-1.2%, to improve strength and corrosion resistance.
Silicon (Si): 0.4%-0.8%, improving workability and strength.
Copper (Cu): 0.15%-0.4%, enhance the hardness and heat resistance.
Chromium (Cr): 0.04%-0.35%, improve corrosion resistance.

3. Manufacturing process
The manufacturing process of 6061-T651 super flat aluminum plate includes the following steps:
Melting and ingot casting: the raw materials are melted and cast into aluminum ingots.
Heat treatment: through solution treatment and artificial aging, optimize the mechanical properties of the material.
Hot rolling and cold rolling: Rolling the ingot into plates, gradually reducing the thickness and improving the surface quality.
Tensile correction: the plates are tensile treated to eliminate internal stresses and ensure flatness.
Precision machining: ultra-flat surfaces and precise dimensions are achieved through leveling, grinding or polishing processes.
Quality inspection: Surface flatness, dimensional accuracy and mechanical properties are inspected to ensure that the product meets the standards.

4. Application areas
6061-T651 super flat aluminum plate is widely used in the following industries:
Aerospace: Used for aircraft structural parts, fuselage panels and other high-precision components.
Semiconductor manufacturing: used for wafer carrier plate, vacuum chamber and other ultra-high flatness requirements of the equipment.
Optical instruments: used for optical platforms, mirror substrates and other precision instrument components.
Automotive industry: for body panels, chassis components and other lightweight design.
Construction industry: used for high-performance building structures such as decorative panels and curtain walls.

5. Advantages
High flatness: ultra-flat surface suitable for high-precision applications.
Excellent mechanical properties: high strength, corrosion resistance, suitable for complex processing.
Lightweight design: reduce product weight and improve efficiency.
Good thermal and electrical conductivity: suitable for scenarios that require heat dissipation or electrical conductivity.

6. Market Trends
With the growing demand for high-precision manufacturing and lightweighting, the application of 6061-T651 Super Flat Aluminum Plate in aerospace, semiconductor and optical fields is expanding. At the same time, the concept of environmental protection and sustainable production has also promoted the development of recycled aluminum alloy technology.

7. Summary
6061-T651 super flat aluminum sheet is widely used in many high-tech fields due to its excellent comprehensive performance and high flatness characteristics. In the future, with the technological progress and the evolution of market demand, its application prospect will be even broader.