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As a manufacturer of aluminum circles and discs, we produce spinning grade aluminum circles in diameters from 4 to 40 inches for customers requiring stable forming performance, controlled dimensions, and clean surface quality. Our aluminum discs are supplied for metal spinning, deep drawing, stamping, cookware forming, lighting reflectors, ventilation components, and general fabricated products.

For spinning applications, the quality of the starting blank directly affects production efficiency and finished-part consistency. Uneven thickness, excessive burrs, surface scratches, or inappropriate temper can lead to wrinkling, splitting, tool marks, and inconsistent wall thickness during forming. Our manufacturing process is designed to provide aluminum circle blanks with reliable ductility, uniform grain structure, and practical dimensional control for industrial processing.

Manufacturing Scope and ASTM Material Control

We manufacture aluminum circles primarily from 1000 series commercial purity aluminum, including 1050, 1060, 1070, 1100, and 1200 grades. These alloys are widely selected for spinning because of their high elongation, corrosion resistance, thermal conductivity, and consistent response to cold forming.

Our production is controlled according to applicable customer specifications and relevant ASTM material requirements, including ASTM B209 for aluminum and aluminum-alloy sheet and plate where applicable. ASTM conformance is determined by the specified alloy, temper, chemical composition, thickness, width-equivalent blank size, mechanical-property requirements, inspection method, and documentation scope stated in the purchase order.

We do not treat ASTM as a generic label. Before production, our technical team confirms the required grade, temper, dimensions, tolerances, surface condition, and end-use forming method. This approach helps ensure that the supplied spinning grade aluminum circle is suitable for the customer's tooling and production route.

Technical Parameters

The following table presents our regular manufacturing range for ASTM standard aluminum circles used in spinning and related forming operations. Custom sizes and tolerances can be evaluated according to drawings or samples.

Why Spinning Grade Aluminum Circle Quality Matters

Metal spinning reshapes a flat aluminum disc over a mandrel through controlled pressure and rotation. The process imposes localized deformation across the blank, particularly near the rim, shoulder, and base of the finished part. Material quality must therefore support elongation without premature cracking while maintaining enough consistency for repeatable forming.

Our spinning grade aluminum circles are produced with emphasis on the following characteristics:

• Uniform thickness: Consistent gauge supports balanced metal flow and helps reduce wall-thickness variation in spun parts.

• Suitable temper: Annealed O temper is generally preferred for demanding spinning and deep drawing because it provides high formability.

• Clean surface: A smooth, controlled surface reduces the possibility of transferring defects to visible lampshades, cookware, decorative components, or appliance parts.

• Low-burr edges: Proper blanking and deburring reduce edge cracking risks and improve operator safety during handling.

• Stable roundness: Accurate circular blanks assist centering, chucking, and automated forming operations.

• Reliable grain condition: Controlled rolling and annealing practices support more uniform deformation during spinning.

For applications requiring more rigid finished parts, customers may select H12, H14, or other strain-hardened tempers. However, temper selection must always consider the depth, profile, and severity of the spinning process. Our factory can recommend an appropriate condition based on the part drawing and planned production method.

Alloy Selection for Metal Spinning

Different 1000 series alloys provide slightly different balances of purity, strength, conductivity, and forming behavior. Selection is normally based on the customer's functional requirements and finished-product appearance.

For standard cookware and general spinning programs, our 1050 Aluminum Circle is frequently specified because it combines reliable formability with a clean mill-finish surface. For projects requiring another common high-purity grade, our 1060 Aluminium Circle can be supplied in suitable diameters, thicknesses, and tempers.

Production Process at Our Factory

Our aluminum circle manufacturing process begins with qualified aluminum coil selected according to the required alloy and temper. The coil is inspected before processing to confirm surface condition, thickness range, and material identification. We then process the material through controlled slitting, blanking, annealing where required, finishing, inspection, and packaging stages.

For spinning grade O temper aluminum discs, annealing is a key process. Proper thermal treatment reduces work hardening introduced during rolling and blanking, restoring ductility for deformation. We control the annealing process according to the alloy, thickness, and intended forming performance. This supports a more consistent response during spinning, especially for deeper profiles and complex contours.

Blanking equipment is selected based on circle diameter, thickness, required edge condition, and production volume. After cutting, discs undergo visual and dimensional inspection. Depending on order requirements, inspection may include diameter measurement, thickness checks at multiple positions, flatness evaluation, surface review, and packaging verification.

Surface and Edge Requirements

Surface quality is particularly important for aluminum circles used in visible or reflective finished products. Our standard mill finish is suitable for many industrial applications, while brighter or more controlled surfaces may be supplied for lighting, decorative, and appliance components.

We inspect for defects that may interfere with forming or the finished appearance, including deep scratches, dents, oil contamination, severe roll marks, and edge damage. Minor characteristics inherent to mill-finish aluminum may be acceptable where they do not affect processing or function, but acceptance criteria can be defined in advance for appearance-sensitive programs.

Our discs can be delivered with smooth cut edges or additional deburring where the application requires improved edge quality. This is useful for manual spinning operations, high-speed handling systems, and components where the rim remains exposed after forming.

Typical Applications

Our 4 to 40 inch aluminum circles are used across a broad range of fabricated products. Smaller diameters are often selected for cookware accessories, caps, small reflectors, and electrical housings. Medium and large diameter aluminum discs are commonly used for spun lampshades, ceiling fixtures, commercial cookware, ventilation covers, pressure vessel components, and architectural parts.

Typical end uses include:

• Spun aluminum lampshades and lighting reflectors.

• Cookware bodies, frying pans, saucepans, and pressure cooker components.

• Ventilation covers, fan housings, and air-handling components.

• Traffic sign blanks and industrial signage.

• Electrical enclosures, capacitor cases, and heat-transfer components.

• Decorative bowls, containers, and appliance trim.

• General deep-drawn and stamped aluminum parts.

Quality Documentation and Export Packaging

As a factory serving industrial and export customers, we can provide material documentation according to agreed order requirements. Available documents may include commercial invoices, packing lists, certificates of analysis, inspection reports, and material test certificates when specified before production.

We package aluminum circles to protect the surface and edges during storage and international transport. Discs may be separated with paper or protective layers, wrapped with moisture-resistant materials, secured on pallets, and packed in export-suitable wooden cases or reinforced outer packaging. Packaging configuration is selected according to disc size, quantity per pallet, container loading method, and destination conditions.

Ordering Information for Custom Aluminum Circles

To manufacture spinning grade aluminum circles efficiently, we recommend providing the alloy, temper, diameter, thickness, surface requirement, edge condition, quantity, and intended application. If the disc will be spun into a deep or complex profile, a drawing or sample of the finished part is also useful. This allows our production team to assess the proper material condition and blank specification before manufacturing.

Our factory produces ASTM-controlled aluminum circle blanks from 4 to 40 inches for metal spinning and related forming processes. Through alloy selection, temper control, precise blanking, inspection, and export packaging, we supply aluminum discs engineered to support stable downstream fabrication and repeatable finished-part quality.