What is a 3003 H14 perforated aluminum sheet? It is a non-heat-treatable aluminum alloy product processed by punching regular or custom holes into solid 3003-H14 aluminum panels. Known as an aluminum-manganese (Al-Mn) alloy, it offers an excellent balance of corrosion resistance, medium strength, and easy formability, making it the top choice for outdoor architectural facades and industrial ventilation.
Understanding the H14 Temper
When buying aluminum, the "temper" is just as important as the alloy grade. So, what does H14 mean?
In the aluminum industry, the "H" stands for strain-hardened (cold-worked). The "1" means it is strain-hardened without any thermal treatment. The "4" means it is half-hard.
Why does this matter? A half-hard temper provides enough strength to keep the metal flat during the heavy impact of the punching machine, but it remains ductile enough to be bent or shaped after punching.
Here is a simple comparison of common 3003 tempers to help you choose:
| Temper | Strength Level | Formability / Bending | Best Application |
| O (Annealed) | Low (Very Soft) | Excellent | Deep drawing, complex spinning |
| H14 (Half-Hard) | Medium | Good | Perforated sheets, standard bending |
| H18 (Full-Hard) | High | Poor (Will crack if bent) | Flat structural panels requiring high stiffness |
Chemical Composition of 3003 Aluminum
| Element | Content (%) |
|---|---|
| Aluminum (Al) | Balance |
| Manganese (Mn) | 1.0 – 1.5 |
| Copper (Cu) | 0.05 – 0.20 |
| Silicon (Si) | ≤ 0.6 |
| Iron (Fe) | ≤ 0.7 |
| Zinc (Zn) | ≤ 0.1 |
Why Choose 3003 Aluminum Alloy for Perforated Sheets?
- Excellent Corrosion Resistance: The added manganese makes it highly resistant to atmospheric moisture and mild chemicals. It will not red-rust, making it perfect for outdoor use.
- Clean Punching Quality: Because of its half-hard state, it punches cleanly. The holes do not tear or crack around the edges during the manufacturing process.
- High Cost-Performance: 3003 is much stronger than pure 1000 series aluminum, but it is significantly cheaper than marine-grade 5052 aluminum. It is the most budget-friendly option for general projects.
- Dual Purpose: It looks good enough for high-end decorative designs and works tough enough for heavy-duty industrial filters.
Hole Patterns & Sizes
1. Hole Patterns
- Round Hole: The most common and economical pattern. Usually arranged in a 60-degree staggered pitch for the best balance of open area and strength.
- Square Hole: Provides maximum open area. Great for air grilles and computer server racks.
- Slotted Hole: Long oval holes used mainly for material sorting and grain drying screens.
- Hexagonal Hole: Offers a honeycomb look and high airflow. Common in architectural designs.
- Decorative Hole: Custom shapes like stars, crosses, or CNC laser-cut logos.
2. Standard Hole Sizes
- Micro-Holes: 0.5 mm – 2.0 mm (Mainly for fine filtration and acoustic panels).
- Standard Holes: 2.0 mm – 10.0 mm (Used for ventilation and machine guards).
- Large Holes: 10.0 mm – 25.0 mm (Used for outdoor building cladding).
Hole Diameter vs Sheet Thickness (Important Guide)
| Hole Diameter | Recommended Thickness |
|---|---|
| 0.5 – 2 mm | 0.5 – 1.5 mm |
| 2 – 10 mm | 1 – 3 mm |
| 10 – 25 mm | 2 – 6 mm |
3. Open Area
The open area usually ranges from 10% to 60%. A higher open area means more air and light can pass through, but the physical strength of the sheet will decrease.
Send your required hole size, pitch, and application to the GNEE engineering team. We will provide a free CAD layout and a direct factory price.
Mechanical and Processing Properties
Medium Strength: It handles standard wind loads and physical impacts much better than 1060 or 1100 aluminum.
Good Ductility: You can easily roll, bend, and form the perforated sheets into curved wall panels or cylindrical filter tubes without breaking the metal.
Easy Fabrication: It can be cut with standard metal shears, CNC routers, or laser cutters. It is also easy to weld using standard aluminum welding techniques (like TIG or MIG).
| Property | Value |
|---|---|
| Tensile Strength | 140 – 180 MPa |
| Yield Strength | ≥ 115 MPa |
| Elongation | ≥ 10% |
| Hardness | 40 – 60 HB |
Applications of 3003 H14 perforated aluminum sheet
1. Architectural and Decorative Use
Applications: Building facades, sunshade panels, balcony railings, and decorative interior partition walls.
Key Benefit: Visual appeal combined with weather resistance. The sheets reduce sunlight glare while keeping the building cool.
2. Industrial Filtration
Applications: Grain sieves, liquid filter support cores, and food processing screens.
Key Benefit: Precise hole sizes allow specific materials to pass through while blocking unwanted debris. The metal is safe and easy to clean.
3. Ventilation and Cooling
Applications: HVAC air vent covers, generator radiator grilles, and computer chassis panels.
Key Benefit: Allows maximum airflow to prevent machines from overheating while keeping human fingers and large dust particles out.
4. Acoustic Solutions (Soundproofing)
Applications: Highway noise barriers, recording studio walls, and airport ceiling panels.
Key Benefit: When paired with sound-absorbing cotton, the perforated metal breaks down sound waves, significantly reducing echo and noise levels.
Standard Sizes and Thickness
GNEE supplies both standard stock sizes and custom-cut panels. Buying standard sizes usually saves you money and reduces delivery time.
| Specification | Standard Range / Options |
| Thickness | 0.5 mm – 6.0 mm (Most common: 1.0mm to 3.0mm) |
| Standard Width x Length | 1000 × 2000 mm |
| 1220 × 2440 mm (Standard 4x8 ft) | |
| 1250 × 2500 mm | |
| Custom Size | We support custom cut-to-length services |
Surface Treatments of 3003 H14 perforated aluminum sheet
- Mill Finish: The raw, natural silver aluminum surface. Lowest cost, used for hidden industrial parts.
- Anodized: An electrochemical process that hardens the surface and adds colors like clear silver, bronze, or black. Extremely scratch-resistant.
- Powder Coated: A dry paint process baked onto the metal. Available in any custom RAL color. Perfect for indoor and general outdoor use.
- PVDF Coating: A premium liquid paint finish that resists UV fading for 15 to 20 years. Strongly recommended for high-rise building facades.
Manufacturing Standards and Packaging
- Production Standards: All our 3003 H14 perforated aluminum sheets strictly follow international standards, including ASTM B209, EN 485, and JIS H4000.
- Export Packaging: We use seaworthy packaging to ensure your goods arrive without scratches or water damage.
- The metal surface is covered with a PE protective film.
- Sheets are wrapped in moisture-proof kraft paper and plastic shrink wrap.
- Everything is securely strapped onto strong, export-fumigated wooden pallets or packed in solid wooden boxes.
Why Choose GNEE as Your Supplier?
- Customization: We can punch any custom hole pattern based on your specific drawings.
- Fast Delivery: High production capacity ensures your bulk orders are shipped on time.
- OEM Support: We provide custom cutting, bending, and packaging with your company branding.
Get a Quote Today
Get a free quote or sample for 3003 H14 perforated aluminum sheet today.
Our sales engineers are online and will provide you with a detailed price list and weight calculation within 24 hours. Contact GNEE now!
