Aluminum grades refer to the specific classifications that differentiate aluminum alloys based on their composition, hardening processes, and heat treatability. These grades are important because different types of aluminum have varying properties suited for distinct applications.
When selecting an aluminum grade, the key question is, "How will you use the aluminum sheet metal?"
Here are some factors to consider:
Strength: Do you need a high strength-to-weight ratio?
Formability: Will the aluminum be shaped or bent during your process?
Machining: Will processes like cutting or stripping be critical?
Weldability: Is welding a requirement for your application?
Rust Resistance: Does the aluminum need to resist corrosion?
Heat Treatability: Will heat be applied during the design or manufacturing process?
Availability: Choosing more common alloys can reduce lead times and costs, as suppliers are more likely to have them in stock.
By evaluating these factors, you can choose the right aluminum alloy for your needs. GNEE, as a supplier, offers a range of aluminum alloys tailored for different industrial applications.
High-precision super-flat aluminum plates are designed for applications that require exceptional dimensional stability and ultra-high flatness. These plates maintain tight tolerances and minimal deformation during processing, ensuring high precision throughout the operation. They offer a flatness tolerance as tight as 0.05mm to 0.1mm, making them ideal for precision tooling, base plates, and high-end fixture applications.

Key Features:
Outstanding Dimensional Stability: Ensures minimal deformation during machining, maintaining tight tolerance and precision.
Ultra-High Flatness: Achieves flatness of 0.05mm to 0.1mm, ideal for precision applications.
Excellent Heat Resistance: Withstands temperatures up to 340°C without warping, making it suitable for high-temperature environments.
400-Grit Polished Surface: Provides a mirror-like, finely polished finish (up to 400 mesh) that is ready for anodizing without further preparation.
Specifications:
Super Flat Aluminum Plate Specifications
| Alloy | Grade | Thickness Range | Flatness Tolerance | Standard Size (mm) |
|---|---|---|---|---|
| 6061 T651 | A Plate | 7–12 mm | 0.1 mm/m² | 2000×6000 (≤6 meters) |
| 15–22 mm | 0.2 mm/m² | 2000×5000 (≤5 meters) | ||
| 25–30 mm | 0.2 mm/m² | 2000×5000 (≤5 meters) | ||
| 35–40 mm | 0.2 mm/m² | 2000×5000 (≤5 meters) |
| Alloy | Grade | Thickness Range | Flatness Tolerance | Standard Size (mm) |
|---|---|---|---|---|
| 5052 / T112 | A Plate | 3–20 mm | 0.1 mm/m² | 1525×3050 |
| 22–25 mm | 0.2 mm/m² | 1525×3050 | ||
| 30–50 mm | 0.25 mm/m² | 1525×3050 | ||
| 51–70 mm | 2 mm/m² | 1525×3050 | ||
| >70 mm | 4 mm/m² | 1525×3050 |
| Alloy | Grade | Thickness Range | Flatness Tolerance | Standard Size (mm) |
|---|---|---|---|---|
| 7075 T651 | A/B Plate | 2–12 mm | 0.1–0.5 mm/m² | 1250 / 2500 / 5005 |
| 13–15 mm | 0.7 mm/m² | 1250 / 2500 / 5005 | ||
| 16–20 mm | 0.9 mm/m² | 1250 / 2500 / 5005 |
| Alloy | Grade | Thickness Range | Flatness Tolerance | Standard Size (mm) |
|---|---|---|---|---|
| 5083 | - | 5–100 mm | ±0.07 mm | Width: 30–2000 Length: 50–5000 mm |
| 5083 | Stock |
5, 6, 6.35, 8, 9.53, 10, 12, 12.7, 15, 20, 19.05, 25, 25.4, 30, 35, 40 mm |
±0.07 mm | 1250×2500 / 1500×3000 / 1600×3660 |

Applications:
High-precision equipment substrate: Used in CNC processing platforms, laser cutting machines, and semiconductor equipment where no warping or deformation is allowed.
Optical and LCD panel industries: Fixtures and inspection platforms for LCD/LED backlight modules, requiring a super-flat surface to prevent display warping.
Structural parts of electronic products: Components such as middle frames for phones or laptop shells, requiring stable anodized surfaces.
SMT high-temperature furnace carrier: Capable of enduring repeated high-temperature cycles (300°C+) without surface warping.
High-end mold templates: Essential for mold substrates and bases, where thickness and flatness must meet extremely high standards.
These plates, offered by GNEE, provide reliable performance in demanding industrial applications.







