What Are Aluminum Perforated Sheets?
Aluminum perforated sheets are flat metal panels punched with a pattern of holes (like round, square, or slotted shapes). Buyers heavily use them in daily life for air ventilation systems, outdoor building facades, acoustic noise panels, and industrial filtration screens.
Because aluminum is naturally lightweight and does not rust, it is a top choice for many projects. However, when you buy custom perforated aluminum panels, you must choose the right alloy grade. The two most common choices in the market are AA1100 and AA3003.
As a professional aluminum product supplier, GNEE has prepared this simple guide to help you compare these two alloys. We will show you the real data so you can buy the correct material at the best wholesale price.
Differences Between AA1100 and AA3003
| Item | AA1100 Aluminum | AA3003 Aluminum |
| Alloy Type | Pure Aluminum (99%+) | Aluminum-Manganese Alloy |
| Series | 1xxx Series | 3xxx Series |
| Main Element | Aluminum | Aluminum + Manganese |
| Strength Level | Low | Medium |
| Corrosion Resistance | Excellent | Excellent |
| Weldability | Excellent | Excellent |
| Material Cost | Lower | Slightly higher |
The Core Conclusion:
- AA1100: High-purity metal, excellent conductivity, low structural strength, and very easy to shape.
- AA3003: An upgraded aluminum. Adding manganese makes it much stronger for structural building use.
Chemical composition of 1100 and 3003 aluminum
To understand why they perform differently, we need to look at what is inside the metal.
| Element (%) | AA1100 | AA3003 |
| Al (Aluminum) | ≥ 99.0 | Balance |
| Mn (Manganese) | - | 1.0 – 1.5 |
| Cu (Copper) | 0.05 – 0.20 | 0.05 – 0.20 |
| Si + Fe | ≤ 1.0 | ≤ 0.7 |
| Zn (Zinc) | ≤ 0.10 | ≤ 0.10 |
What This Means for Buyers:
The biggest difference is the Manganese (Mn) in AA3003. By adding just 1.0% to 1.5% manganese, the AA3003 aluminum becomes 20% to 30% stronger than AA1100. On the other hand, AA1100 is over 99% pure aluminum, making it the best choice for chemical environments or electrical uses.
Strength and Hardness of 1100 and 3003 aluminum
When you install a perforated sheet on a building wall, wind and gravity will pull on it. Mechanical properties tell us how much weight the metal can handle before it breaks or bends.
| Property | AA1100-H14 | AA3003-H14 |
| Tensile Strength | 90 – 110 MPa | 140 – 180 MPa |
| Yield Strength | ≥ 35 MPa | ≥ 115 MPa |
| Elongation | ≥ 20% | ≥ 10% |
| Overall Hardness | Lower | Higher |
Buying Advice:
If your project needs to carry weight, block heavy wind, or resist physical impact, you must choose AA3003.
If the metal is just for indoor decoration, light covers, or simple screens, AA1100 is strong enough and saves you money.
Choosing the wrong alloy can cause the metal sheet to bend or break after installation. Send your project details or drawings to the GNEE engineering team. We will help you select the safest material and provide a direct factory quote within 24 hours. Click here to contact us now!
Punching Performance in the Factory
Perforating metal means a machine punches thousands of holes into the sheet. The softness or hardness of the alloy changes how the factory processes it.
| Performance | AA1100 | AA3003 |
| Punching Ease | Excellent | Very good |
| Hole Edge Quality | Smooth | Smooth |
| Crack Resistance | Excellent | Good |
| Structural Stability | Low | High |
Industry Experience:
Because AA1100 is very soft, it is very easy to punch. It does not damage the machine's punching pins (tooling) easily, so production is smooth. However, because it is soft, large AA1100 sheets might curve slightly after many holes are punched.
AA3003 is harder. It stays perfectly flat even when you punch large-sized sheets with high open areas.
Common Applications of AA1100 vs AA3003 Perforated Aluminum Sheet
Where to Use AA1100 Perforated Sheet:
- Indoor decorative wall panels
- Office ceiling panels
- Lighting fixture covers
- Chemical equipment liners (because pure aluminum resists chemicals well)
- Basic acoustic boards
Where to Use AA3003 Perforated Sheet:
- Outdoor building facades and cladding
- Highway noise barrier walls
- Heavy-duty industrial filters
- Factory machinery safety guards
- Outdoor walkways and anti-slip platforms
Buyer Decision Guide
If you are still not sure which custom aluminum perforated metal to buy, use this simple checklist:
| Your Project Scenario | Recommended Alloy |
| You have a strict, tight budget | AA1100 |
| You need high structural strength | AA3003 |
| The panel is for an outdoor high-rise building | AA3003 |
| The panel is for indoor hotel decoration | AA1100 |
| The environment has strong chemicals | AA1100 |
| You want the longest outdoor service life | AA3003 |
Standard Specifications We Offer
When you order from GNEE, you can choose from these standard manufacturing sizes. We also support custom cutting.
- Production Standards: ASTM B209 / EN 573 / GB/T 3880
- Sheet Thickness: 0.3 mm – 10.0 mm
- Hole Diameter: 0.5 mm – 100 mm
- Open Area: 5% – 70%
- Common Hole Patterns: Round (staggered or straight), Square, Slotted.
Safe Export Packaging
Perforated metal sheets can easily get scratched, bent, or damaged by sea water during long shipping. GNEE uses strict export packaging to protect your investment:
- We place the sheets on strong wooden pallets or steel pallets.
- We wrap the metal completely in waterproof kraft paper and PE plastic film to block ocean moisture.
- We add hard corner protections so the edges do not bend.
- We tie everything tightly with heavy-duty steel strapping.
- All wooden packing materials include Fumigation Certification (ISPM 15) for smooth customs clearance.
Why Choose GNEE as Your Supplier?
Finding a reliable aluminum sheet supplier is critical for your business. GNEE has over 15 years of rich export experience. Here is what we offer:
- Full Alloy Range: We supply all aluminum grades from 1xxx to 7xxx series.
- Deep Customization: We can punch any hole size, pitch, or pattern based on your design. We also do CNC cutting and coil-to-sheet leveling.
- Strict Quality Control: Every order passes chemical and mechanical testing before it leaves the factory.
- Global Shipping: We quickly deliver to the fast-growing markets like the Middle East, Southeast Asia, and South America.
