3003 H18 Mill Finish Aluminum Circle for Kitchen Utensil Fabrication

3003 H18 mill finish aluminum circles are raw, uncoated aluminum blanks specially engineered for deep drawing and forming of kitchen utensils and cookware. Made from 3003 manganese aluminum alloy, this grade delivers balanced tensile strength, outstanding formability and excellent corrosion resistance, well suited for continuous stamping and deep-draw processing. The plain mill surface leaves flexibility for subsequent polishing, anodizing, non-stick coating and other surface treatments.

Widely used to produce frying pans, saucepans, baking trays, pots and other household kitchenware. We support custom diameters, thickness ranges and bulk factory supply, stable roundness with minimal burrs to reduce scrap rate during your utensil manufacturing.

Compared with fully annealed aluminum, H18 temper provides substantially higher strength and lower elongation. This makes it suitable for components that must retain their shape after stamping or light forming. For deep cookware bodies requiring substantial material flow, a softer temper should be selected according to the drawing depth and production process.

Dingang supplies AA3003 aluminum circles with mill-finish surfaces, custom diameters and multiple thickness options. Diameter tolerance, thickness tolerance, surface quality, edge condition and temper should be confirmed according to the customer's forming equipment and finished component.

equest 3003 H18 Aluminum Circle Price

3003 H18 Aluminum Circle Production Range

3003 H18 Aluminum Circle Dimensions and Tolerances

The following dimensional values cover the detailed circle and shaped-blank range associated with this product family. Final thickness, diameter, cutting method and tolerances should be confirmed for each order.

Why Choose 3003-H18 for Rigid Kitchenware Components?

Full-Hard Temper for Higher Rigidity

H18 is a heavily strain-hardened temper. Compared with O, H12 or H14 conditions, it provides higher strength and greater resistance to unwanted deformation, making it useful where the finished component needs to remain relatively flat or rigid.

Higher Strength Than 1xxx Series Aluminum

AA3003 contains manganese as its principal alloying addition. This gives the alloy greater strength than commercially pure aluminum grades while retaining useful corrosion resistance and thermal conductivity.

Mill-Finish Surface for Further Processing

The uncoated mill-finish surface provides a practical starting material for products that will undergo subsequent polishing, anodizing, painting, coating or other finishing operations.

Good Heat Distribution for Kitchenware Components

AA3003 provides useful thermal conductivity for cookware and appliance components where heat spreading is part of the product design.

Discuss Your 3003 H18 Application

3003-H18 Forming Limits

3003-H18 is selected primarily for high hardness and rigidity rather than maximum ductility. Its forming capability is therefore more limited than softer tempers.

The listed mechanical-property reference for 3003-H18 shows a minimum elongation of 3% and a bend-test radius of 3T. Components requiring severe stretching or a high drawing ratio should therefore be reviewed carefully before H18 material is selected.

For deep pots, high-wall pans or other severely drawn cookware bodies, a softer temper is normally more suitable. H18 is better positioned for flat components, cookware bases, lids, covers and shallow-formed parts where shape retention is important.

Aluminum Circle Mechanical Property Reference

Mechanical properties vary according to alloy, thickness and manufacturing route. The following values summarize the listed reference data for the available aluminum-circle series and help buyers compare different tempers before selecting material.

3003 Aluminum Chemical Composition Reference

The following table summarizes the chemical-composition reference values supplied for the available aluminum-circle range. Final chemistry should be confirmed against the material specification agreed for each order.

Mill Finish Surface Quality Requirements

Surface quality becomes particularly important when the aluminum disc will later be polished, anodized, coated or used as a visible kitchenware component.

Quality Checks Before Production

Check Temper Before Forming

Confirm that H18 is appropriate for the required operation. If the component requires significant stretching, deep drawing or tight bending, a softer temper may provide better processing performance.

Check Thickness Consistency

Stable thickness helps maintain finished component stiffness, weight and forming consistency. The required tolerance should be stated in the purchase order.

Check Diameter Accuracy

Circle diameter should match the stamping tool, finished component dimensions and trimming allowance. Punched and sheared circles have different listed diameter tolerances.

Inspect Edge Condition

The edge should be checked for burrs, cracks and mechanical damage before stamping or spinning. Edge defects can create handling problems or become initiation points for cracking during forming.

Inspect Mill-Finish Surface

Check the surface for scratches, pit marks, rolling bands, dents and contamination before production, especially when the component will subsequently receive a decorative or functional surface treatment.

Typical Applications of 3003-H18 Aluminum Circles

• Cookware bases and bottom components

• Cookware lids and covers

• Shallow-stamped kitchenware

• Baking trays and rigid round components

• Appliance components requiring higher rigidity

• Lighting reflectors

• Lamp components

• Other circular parts requiring high hardness with limited subsequent forming

How to Select 3003 H18 Aluminum Circle

1. Confirm the Required Forming Depth

H18 should be selected where rigidity is more important than high elongation. If the part must undergo severe deep drawing, high-wall stretching or tight-radius forming, confirm whether a softer temper is more suitable before ordering.

2. Confirm Thickness

The broader listed production range covers 0.40–8.00 mm, while the detailed circle dimensional table covers 0.71–6.35 mm. Provide the required nominal thickness and tolerance for final production confirmation.

3. Confirm Circle Diameter

The broader listed range covers 85–1250 mm, while the detailed dimensional reference covers 102–1250 mm. Final availability depends on thickness, cutting method and quantity.

4. Select the Cutting Method

Where diameter accuracy is important, specify whether punched or sheared circles are required. The listed reference provides different tolerances for each method.

5. Confirm the Subsequent Surface Treatment

State whether the finished product will be polished, anodized, enameled, PTFE-coated, painted or otherwise finished so that the appropriate mill-finish surface acceptance criteria can be confirmed.

6. Confirm Applicable Material Requirements

Provide the required material standard, chemical-composition limits, mechanical-property requirements and tolerances where these are specified by the customer's drawing or quality system.

Send Your 3003 H18 Circle Specification

Information to Provide When Requesting a Quote

For a faster and more accurate quotation, please provide:

• Required alloy and temper

• Thickness

• Circle diameter

• Thickness and diameter tolerances

• Punched or sheared circle requirement

• Finished product or application

• Required stamping, bending or spinning operation

• Subsequent surface treatment

• Applicable material standard

• Required quantity per size

• Packing requirements

• Destination port or delivery location

For a new kitchenware component, providing the finished-part drawing or current approved material specification can help confirm whether H18 is appropriate for the required forming operation.

Request a 3003 H18 Aluminum Circle Quote

Frequently Asked Questions

FAQs

Q1: What are the advantages of 3003 H18 aluminum circle over 1060 for kitchen utensils?

A1: 3003 alloy contains manganese, offering higher strength and better sag resistance after heating compared to pure 1060 aluminum. It keeps good formability for deep drawing and performs better for thicker cookware that requires deformation resistance.

Q2: Is the mill finish surface suitable for direct non-stick coating?

A2: The raw mill finish is uncoated. It needs proper surface cleaning and pretreatment before applying non-stick coating to guarantee good adhesion, which is the standard workflow for cookware factories.

Q3: What temper is H18, and how does it affect deep drawing?

A3: H18 is full-hard temper. It has higher hardness and strength. It works for moderate deep draw shapes; for ultra-deep drawing requirements, H14 or O temper is recommended instead.

Q4: What thickness and diameter can you supply for these kitchen utensil aluminum circles?

A4: Regular thickness ranges from 0.6mm to 3.0mm, custom diameters from 100mm up to 800mm. We accept customized specs based on your cookware mould drawings.

Q5: Can these aluminum discs be used for food contact kitchenware?

A5: Yes. 3003 aluminum is food-safe when processed correctly. It meets common food contact standards after finishing and coating, ideal for household cooking utensils.