Aluminum Ingots (A5N)
Ultra High Purity Aluminum Ingots (A5N, A5N5) – (99.999% – 99.9995%)
Semi-cylindrical and round ingots weighing from 2.5 to 6 kg individually sealed in polyethylene wrap
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Real FAQs
Yes, trial orders are available for most products, excluding custom-engineered alloys. Please select the “Trial quantity required” option when submitting your RFQ form.
Lead times vary depending on the type of order. Below is an overview of typical processing and delivery times for our main order categories:
- Trial batch orders are typically dispatched within 5 business days from the date of payment receipt.
- Ultra high-purity metals purchase orders are fulfilled within 7–14 business days from the date of advance payment under the main agreement, depending on quantity and destination.
- Custom alloy wire manufacturing orders include a development phase and are scheduled individually based on product complexity, specification, and volume.
Lead time for each custom alloy wire contract is determined jointly with the client and includes both production and quality assurance stages.
Yes, we can arrange logistics and deliver to any international airport specified by the buyer.
Our order processing follows a structured and transparent workflow aligned with Incoterms 2020 practices:
- Client: submits an LOI (Letter of Intent) or RFQ form to Pure Metals.
- Jointly: we clarify and confirm all technical and commercial details of the LOI/RFQ.
- Pure Metals: issues an FCO (Full Corporate Offer). We intentionally skip SCO (Soft Corporate Offer) to streamline the process.
- Client: confirms the FCO and provides proof of funds (BCL or equivalent banking document).
- Optionally: a trial quantity shipment may be arranged under an accelerated procedure, based on a simplified standalone agreement. Upon receipt, the client confirms that the product quality meets the required specifications.
- Pure Metals: drafts the contract and coordinates revisions with the client.
- Both parties: sign the final contract.
- Client: makes a partial advance payment — typically 25% of the total value of the initial product batch.
- Pure Metals: dispatches the goods and provides the transport documentation to the client.
- Client: completes final payment and receives the goods at the destination in accordance with the transport documentation and agreed delivery terms.
Absolutely. Once your RFQ or LOI is agreed upon and the FCO is signed, we’d be happy to arrange a visit to one of our warehouses that best suits your order specifics. If needed, we can also organize self-pickup of your order from the warehouse under the appropriate Incoterms 2020, making the process as smooth and convenient for you as possible.
Yes, we assist with all necessary documentation to help streamline logistics, compliance, and customs clearance — regardless of the products combination or technical specifications in your order.
Yes, every delivery includes a lab certificate to verify product purity and ensure batch-to-batch consistency.
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Ultra High Purity Aluminum: Material Profile
Aluminum is a lightweight Group 13 metal with an electron configuration of [Ne] 3s^2 3p^1, which accounts for its high chemical activity and the ability to form a durable protective oxide film. It melts at 660.3°C, boils at 2470°C, and has a density of approximately 2.70 g/cm³. Among structural and conductive materials, aluminum stands out for its excellent specific electrical conductivity and high thermal conductivity (0.57 cal/cm·°C·s).
These characteristics, combined with exceptional ductility and corrosion resistance, make A5N / A5N5 (99.999% – 99.9995%) aluminum indispensable in high-precision metallurgy and advanced electronics. However, the physical properties of the metal at this level of purity are extremely sensitive to trace impurities. Even the presence of trace amounts of elements such as iron, silicon, copper, or magnesium at the ppb (parts per billion) level can distort the crystal lattice, affecting the material’s performance in specialized industrial applications.
Product Form and Handling
High-purity aluminum of this grade is typically supplied as semi-cylindrical or round ingots — compact, silver-white blocks weighing from 2.5 to 6 kg with a mirror-like surface finish. Unlike standard industrial grades, A5N ingots are produced through the zone melting method in accordance with TU 48-0533-058-91, ensuring high chemical consistency and structural homogeneity.
Each ingot undergoes individual preparation: it is hermetically sealed in a polyethylene or inert protective wrap. This individual sealing is necessary to eliminate contact with the environment, preventing surface oxidation and the adsorption of gases. Maintaining this “five nines” purity is critical during transit and storage to ensure the material is ready for immediate use upon discharge at high-tech facilities.
Why Purity Matters
Modern industry demands materials with predictable behavior and minimal contamination risks. Aluminum with a purity of 99.999% – 99.9995% enables stable results in magnetron sputtering (PVD) processes and the production of high-stability alloys.
The use of ultra-pure aluminum minimizes the risk of defects in thin-film components, which is vital for the electronics and aerospace sectors. In an environment with strict requirements for product yields, utilizing A5N grade material helps speed up production cycles by reducing the likelihood of impurity-related failures. Under HS Code 7601 10 00 00, this material represents the gold standard for non-alloyed, unwrought aluminum in precision-grade production workflows.
Applications of High-Purity Aluminum (A5N)
High-purity aluminum, defined by its high chemical purity of 99.999% – 99.9995%, is a specialized material designed for industries where precision and material consistency are paramount. While more accessible than 6N grades, it maintains the exceptional low density, thermal conductivity, and corrosion resistance required for advanced technological environments. Produced according to TU 48-0533-058-91, A5N aluminum is indispensable in:
