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Help CenterAluminum Coil 3003 H14, 10-Year Anti-Corrosion Warranty, Guaranteed Thickness Tolerance ±0.05mm, Full Mill Test Report Available
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Hemaokang Steel (Shandong) Co., Ltd. is proud to offer the Aluminum Coil 3003 H14, a high-performance solution engineered for demanding industrial and architectural applications. As a manufacturer with direct mill capabilities, we combine rigorous process control with responsive export operations based in Shandong, China. This aluminum coil is produced to deliver consistent mechanical properties, exceptional corrosion resistance, and precise dimensional accuracy, making it a trusted choice for buyers across more than a dozen global markets.
The 3003 alloy belongs to the Al-Mn series, which provides approximately 20% higher strength than pure aluminum while retaining excellent workability and formability. The H14 temper indicates a strain-hardened condition with moderate strength, offering an ideal balance for bending, stamping, and roll-forming processes. Each coil is manufactured with a guaranteed thickness tolerance of ±0.05mm, ensuring uniformity across long production runs and reducing material waste during fabrication.
Our aluminum coil is backed by a 10-year anti-corrosion warranty, reflecting our confidence in the material's long-term performance in challenging environments. Full mill test reports are available upon request, providing complete traceability for chemical composition, mechanical properties, and dimensional verification. This transparency supports quality audits, end-user specifications, and procurement compliance.
Key Features
- Excellent corrosion resistance: The 3003 alloy naturally forms a protective oxide layer, making it suitable for atmospheric, freshwater, and mild chemical environments.
- Precise thickness control: Every coil is rolled and inspected to meet a ±0.05mm tolerance, enabling consistent results in stamping and forming operations.
- Strong yet formable: H14 temper delivers a yield strength range typically between 140–180 MPa, allowing for easy bending without cracking.
- Wide width range: Available in multiple widths and customizable slit coils to suit specific production needs.
- Full traceability: Mill test certificates are issued for each batch, documenting chemical and mechanical properties.
- Smooth surface finish: Options include mill finish, stucco embossed, or diamond pattern, depending on your application.
Typical Applications
- Roofing sheets, gutters, and downspouts
- Wall cladding and curtain wall systems
- Automotive heat shields and body components
- Refrigerator evaporator fins and condenser coils
- General sheet metal fabrication, tanks, and pressure vessels
- Heat exchanger applications and corrosive-resistant containers
Technical Specifications
| Parameter | Value |
|---|---|
| Alloy | 3003 |
| Temper | H14 |
| Thickness Range | 0.2 mm – 6.0 mm (customizable) |
| Thickness Tolerance | ±0.05 mm |
| Width Range | 500 mm – 1600 mm (customizable) |
| Inner Diameter | 300 mm / 400 mm / 500 mm (optional) |
| Coil Weight | 2 – 5 tons per coil |
| Surface Finish | Mill finish, stucco, embossed, diamond |
| Warranty | 10-year anti-corrosion warranty |
| Mill Test Report | Available with every shipment |
Quality and Process Control
Our production facility operates under an ISO9001 quality management system, ensuring that every step from cast rolling to final inspection follows documented procedures. Each coil undergoes ultrasonic thickness gauge measurement, surface defect inspection, and mechanical property verification before packaging. The result is a product with reliable edge alignment, minimal internal stress, and a clean, oiled surface resistant to staining during shipping and storage.
We understand that purchasing aluminum coils for long-term projects requires confidence in material consistency. Therefore, we maintain strict process parameters for annealing, cold rolling, and finishing to ensure that every delivered coil matches the approved sample's hardness and surface quality. Whether you require a small trial order or multiple containers, our production planning supports prompt lead times without sacrificing quality.
Why Choose Hemaokang Steel?
- Factory-direct supply: We control the entire finishing process, offering competitive pricing and flexible customization.
- Export experience: Our annual export value reaches US$50–100 million, serving clients in North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and Asia.
- Dedicated support: Our team provides quick responses, clear communication, and practical logistics solutions from Qingdao port.
- Customizable options: Width, coil weight, inner diameter, surface treatment, and packing can be tailored to your specific requirements.
With a 10-year anti-corrosion warranty and guaranteed thickness tolerance, the 3003 H14 aluminum coil from Hemaokang Steel is a reliable choice for manufacturers, contractors, and distributors. We're ready to provide samples, mill test reports, and competitive quotations. Contact us today to discuss your quantity, specification, and delivery schedule — we look forward to building a long-term partnership.
FAQ
Q1: What does the 10-year anti-corrosion warranty cover?
It covers failures caused by corrosion under normal atmospheric and industrial conditions. The warranty assures that the coil will not experience perforation or excessive surface degradation due to corrosion within ten years from the date of delivery, provided the product is stored and used properly.
Q2: Can I get a sample before placing a bulk order?
Yes, we can provide small samples for quality evaluation. Samples are typically cut from production stock and shipped with relevant test certificates. Please contact us with your detailed requirements.
Q3: Is the ±0.05mm thickness tolerance guaranteed for all thicknesses?
Yes, this tolerance is guaranteed for the full production range within our standard specifications. For ultra-thin or ultra-thick gauges, we can also confirm the exact tolerance during quotation, but ±0.05mm remains our standard assurance.
Q4: Do you provide mill test reports?
Yes, a full mill test report is available for every coil. The report includes chemical analysis, tensile strength, yield strength, elongation, and dimensional inspection results. It will be included in the shipping documents or sent electronically prior to shipment.
Q5: Can the coil width be customized to my requirements?
Absolutely. We offer slitting services to produce any width within our range. The minimum slit width is 50 mm, and the maximum is based on the parent coil width. Custom widths require no additional tooling charges for standard products.
Q6: What are the available packing options for export?
Our standard export packing is sea-worthy: aluminum coil is wrapped with moisture-proof paper, polyethylene film, steel pallets (or wooden pallets), and secured with steel strapping. We also offer wooden crate packaging for extra protection or fragile-surface finishes.
Q7: How does the H14 temper compare to other tempers?
H14 is a strain-hardened temper with about half the work hardening of H18. It offers better formability than H18 while maintaining moderate strength. Compared to O temper (annealed), H14 is stronger, making it suitable for applications that need stiffness and shape retention.
Q8: What is the typical lead time for a container order?
For standard specifications and finishes, the production lead time is 10–15 days after confirmation of the order. For non-standard sizes or large quantities, please consult us, and we will provide an accurate schedule based on our production plan.
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