Heat exchange fins, chemical storage tanks, thin sheet metal housings for automated equipment, air ducts, oil tanks, and decorative signs.
3003 is an Al-Mn corrosion-resistant alloy with excellent plasticity, corrosion resistance and weldability. It is slightly stronger than pure aluminum, has outstanding bending and deep-drawing performance in thin sheet, and is stable in damp and generally corrosive environments.
It cannot be strengthened by heat treatment, so there is no T651 temper. It suits thin sheet work built around forming and welding, and it also takes surface finishes well.
It is mostly used for heat exchange fins, heat exchangers, chemical storage tanks, air ducts, oil tanks, decorative nameplates and thin sheet metal housings for equipment. It is not recommended for linear module load-bearing bases, as heavy-allowance CNC machining tends to cause spring-back, making long-term micron-level dimensional stability hard to maintain.
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Standing inventory |
We maintain a regular inventory of aluminum sheets, aluminum bars, aluminum coils, and aluminum rods, covering brands/models, sizes, and thicknesses. We can provide custom-length cutting and material certificates according to drawings. |
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Aluminum sheet thickness range |
1–60mm · Extra thick, customizable |
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Aluminum rod diameter range |
8–50 mm · 12 sizes in total |
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Aluminum strip size range |
Thickness 3*100MM, width 10*250 mm, length can be customized. |
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Commonly used dimensions of sheet metal |
1500*3000 and supports custom width and length |
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Application and processing |
Sheet metal bending equipment, box body, decorative structure, milling, drilling, grinding, boring, planing, inserting, sizing, cutting to length. |
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Inventory specifications are derived from Dihong's standby inventory specifications table and spot inventory table. Real-time inventory and material status are subject to business confirmation. |
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We have obtained multiple international system certifications and industry qualifications. All products comply with international standards, ensuring reliable quality and long-term stable cooperation. Custom 3003 aluminum-manganese alloy raw material
Oct 13 , 2026
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