1100 Aluminum Circle: Properties, Specifications, and Applications
1100 aluminum circle is a pure aluminum disc cut from 1100 aluminum sheet or plate. It is one of the most widely used aluminum circle products in the world. The 1100 aluminum alloy contains 99% or more pure aluminum, giving it excellent formability, corrosion resistance, and thermal conductivity.
If you are looking for a reliable 1100 aluminum circle for cookware, lighting, or spinning applications, this guide covers everything you need to know.
What Is 1100 Aluminum Circle?
1100 aluminum circle is a flat, round disc made from 1100 series aluminum alloy. It is produced by blanking or stamping from 1100 aluminum sheet or 1100 aluminum plate.
The “1100” designation means the alloy contains a minimum of 99.00% aluminum with small amounts of copper (0.05–0.20%) and other trace elements. This high purity level makes 1100 aluminum circle exceptionally soft and easy to form.
1100 aluminum circle is also known as:
- Aluminum disc
- Aluminum wafer
- Circle aluminum blank
- Aluminum round blank
1100 Aluminum Circle Specifications
Standard Dimensions
| Parameter | Range |
|---|---|
| Diameter | 80mm – 1200mm |
| Thickness | 0.3mm – 6.0mm |
| Temper | O, H12, H14, H16, H18, H22, H24 |
| Surface | Mill finish, bright finish, anodized |
| Edge | Smooth trimmed, no burr |
Chemical Composition
| Element | Content (%) |
|---|---|
| Aluminum (Al) | 99.00 min |
| Copper (Cu) | 0.05 – 0.20 |
| Silicon (Si) | 1.00 max |
| Iron (Fe) | 1.00 max |
| Manganese (Mn) | 0.05 max |
| Zinc (Zn) | 0.10 max |
| Others | 0.15 max |
1100 Aluminum Circle Properties
Mechanical Properties
| Property | Value (O Temper) |
|---|---|
| Tensile Strength | 75 – 105 MPa |
| Yield Strength | 25 – 55 MPa |
| Elongation | ≥ 20% |
| Hardness (HB) | 23 |
| Shear Strength | 55 MPa |
Physical Properties
| Property | Value |
|---|---|
| Density | 2.71 g/cm³ |
| Melting Point | 643 – 657°C |
| Thermal Conductivity | 222 W/m·K |
| Electrical Conductivity | 59% IACS |
| Modulus of Elasticity | 69 GPa |
Key Performance Characteristics
✅ Excellent formability — Deep drawing and spinning without cracking
✅ High corrosion resistance — Performs well in humid and outdoor environments
✅ Superior thermal conductivity — 222 W/m·K, ideal for cookware and heat exchangers
✅ Good surface finish — Accepts anodizing, polishing, and coating treatments
✅ Non-toxic and food safe — Compliant with food contact regulations
✅ Lightweight — 2.71 g/cm³, easy to handle and transport
✅ Excellent weldability — Joins easily with standard aluminum welding methods
1100 Aluminum Circle Temper Options
The temper of 1100 aluminum circle determines its hardness and formability. Choosing the right temper is critical for your manufacturing process.
| Temper | Condition | Best For |
|---|---|---|
| O | Fully annealed, softest | Deep drawing, spinning, complex shapes |
| H12 | Strain hardened, 1/4 hard | Moderate forming, general use |
| H14 | Strain hardened, 1/2 hard | Light forming, covers, lids |
| H16 | Strain hardened, 3/4 hard | Stiff panels, reflectors |
| H18 | Fully strain hardened | Minimal forming required |
| H22 | Annealed + slight hardening | Cookware, pots |
| H24 | Partially annealed | Balanced strength and formability |
💡 For cookware manufacturing, O temper and H14 temper are most commonly specified for 1100 aluminum circles.
1100 Aluminum Circle vs 1100 Aluminum Sheet vs 1100 Aluminum Plate
Many customers ask about the difference between these three product forms.
| Product | Form | Thickness | Primary Use |
|---|---|---|---|
| 1100 Aluminum Circle | Round disc, pre-cut | 0.3mm – 6.0mm | Cookware, spinning, stamping |
| 1100 Aluminum Sheet | Flat rectangular roll/sheet | 0.2mm – 6.0mm | Raw material, fabrication |
| 1100 Aluminum Plate | Flat rectangular, thicker | 6.0mm – 200mm | Structural, tooling, heavy fab |
1100 aluminum circle is essentially a value-added product made from 1100 aluminum sheet. Buying pre-cut circles saves you blanking costs, reduces material waste, and speeds up your production line.
Applications of 1100 Aluminum Circle
1100 aluminum circle is used across a wide range of industries due to its excellent deep-drawing properties and corrosion resistance.
Cookware Manufacturing
The largest application for 1100 aluminum circle. Used to produce:
- Pots and pans
- Pressure cookers
- Frying pans
- Milk pots
- Rice cookers
The O and H14 tempers are preferred because they allow deep drawing without tearing.
Lighting Reflectors
1100 aluminum circles are spun or stamped into:
- Street light reflectors
- Industrial lamp housings
- LED light reflectors
- Spotlight reflectors
High-purity 1100 aluminum provides excellent reflectivity after polishing or bright anodizing.
Traffic and Road Signs
Anodized aluminum circles are used for:
- Round road signs
- Traffic warning discs
- Regulatory sign blanks
Chemical and Food Processing Equipment
1100 aluminum’s corrosion resistance and non-toxic nature make it ideal for:
- Storage tanks
- Processing vessels
- Food packaging components
Other Applications
- Capacitor casings
- Name plates and tags
- Heat exchanger components
- Decorative discs and covers
1100 Aluminum Circle Manufacturing Process
Understanding how 1100 aluminum circle is made helps you evaluate quality and supplier capability.
Step 1 — Raw Material
High-quality 1100 aluminum sheet or coil is sourced as the base material. Thickness and temper are selected based on finished circle requirements.
Step 2 — Blanking / Stamping
The sheet is fed into a blanking press. A circular die cuts the disc to the specified diameter. Precision tooling ensures clean edges with no burr.
Step 3 — Annealing (if required)
For O-temper circles, the blanked discs are annealed in a controlled atmosphere furnace to achieve maximum softness and formability.
Step 4 — Surface Treatment
Depending on customer requirements, circles receive:
- Mill finish (standard)
- Bright rolling finish
- Anodizing
- Polishing
Step 5 — Quality Inspection
Each batch is inspected for:
- Dimensional accuracy (diameter, thickness)
- Surface quality (no scratches, oil stains, oxidation)
- Mechanical properties (tensile, elongation)
- Edge condition (no burr, no cracks)
Step 6 — Packaging
Circles are stacked, interleaved with protective paper or film, and packed in wooden pallets or export cartons for safe shipping.
Why Choose Us as Your 1100 Aluminum Circle Supplier?
As an experienced aluminum circle manufacturer and supplier, we offer:
Production Capability
- Diameter range: 80mm – 1200mm
- Thickness range: 0.3mm – 6.0mm
- Monthly capacity: 3,000+ metric tons
- Tempers available: O, H12, H14, H16, H18, H22, H24
Quality Assurance
- Raw material from certified 1100 aluminum sheet suppliers
- 100% dimensional inspection
- Mechanical property testing per ASTM B209 / EN 573
- Mill test reports (MTR) with every shipment
- ISO 9001 certified manufacturing
Customization
- Custom diameters to your exact specification
- Custom thickness tolerances
- Surface finish options: mill, bright, anodized
- OEM packaging available
Export Experience
- Serving customers in 30+ countries
- Experience exporting to Europe, Middle East, Southeast Asia, South America
- Familiar with export documentation: CO, fumigation certificate, SGS inspection
1100 Aluminum Circle Packaging and Shipping
| Item | Detail |
|---|---|
| Inner packaging | Interleaved with PE film or kraft paper |
| Outer packaging | Wooden pallet with steel banding |
| Standard pallet weight | 1–2 MT per pallet |
| Container options | 20GP, 40GP, 40HQ |
| Lead time | 15–25 days after order confirmation |
| MOQ | 1 metric ton |
Frequently Asked Questions
What is 1100 aluminum circle used for?
1100 aluminum circle is primarily used in cookware manufacturing (pots, pans, pressure cookers), lighting reflectors, traffic signs, and chemical processing equipment. Its excellent deep-drawing properties and corrosion resistance make it ideal for these applications.
What is the difference between 1100 and 3003 aluminum circle?
1100 aluminum circle contains 99%+ pure aluminum and is softer with better formability. 3003 aluminum circle contains manganese (1.0–1.5%) which increases strength by about 20%. For very deep drawing applications, 1100 is preferred. For applications requiring slightly more strength, 3003 is specified.
What temper is best for cookware?
O temper (fully annealed) is the most common choice for deep-drawn cookware. H14 temper is used when some additional stiffness is needed in the finished product.
Can 1100 aluminum circle be anodized?
Yes. 1100 aluminum circle anodizes very well due to its high purity. It produces a clear, bright anodized finish suitable for decorative and protective applications.
What is the minimum order quantity?
Our standard MOQ is 1 metric ton per specification. We can accommodate mixed diameter orders to meet the MOQ requirement.
Do you provide mill test reports?
Yes. Full mill test reports (MTR) including chemical composition and mechanical properties are provided with every shipment.
Request a Quote for 1100 Aluminum Circle
Tell us your requirements and we will respond within 24 hours:
- ✅ Diameter (mm)
- ✅ Thickness (mm)
- ✅ Temper (O / H14 / H24, etc.)
- ✅ Surface finish requirement
- ✅ Monthly quantity (MT)
- ✅ Destination port
All 1100 aluminum circle products are manufactured to ASTM B209 and EN 573-3 standards. Custom specifications welcome. Samples available upon request.
