4N marks the documented high-purity level for more demanding specification targets.
Product detail 4N
4N High-Purity Aluminium (>=99.99%) — Manufacturer & Supplier for Germany
4N is the published high-purity grade on the HUABO website with >=99.99% aluminium. It is positioned for industrial projects in Germany where buyers need a clearly documented purity level, visible batch chemistry, and technical dialogue on the supplier side.
The published purity matrix lists 99.9936% aluminium as the typical batch value for 4N.
HUABO references 4N5 as the target purity level for special requirements and tightly controlled projects.
RoHS, ISO, and energy documentation support technical and regulatory supplier review.
Typical batch data
4N composition for engineering review and sourcing discussions
This table reflects the documented 4N chemistry published on the HUABO site. It is designed to support internal release processes and faster RFQ comparison.
| Grade | Al % | Si | Fe | Cu | Mn | Mg | Zn | Ga | Purity |
|---|---|---|---|---|---|---|---|---|---|
| 4N | 99.9936 | 0.0015 | 0.0011 | 0 | 0.0002 | 0.0002 | 0.0008 | 0.0014 | >=99.99% |
Chemical composition in % by weight. Production standard: YS/T665-2018. All values are typical batch results.
Positioning
How HUABO frames 4N in its supply range
This page acts as the landing page for projects where 3N8 is not sufficient and standard grades are too broad. It also serves as an entry point for discussions on 4N5 up to 99.995% when the application requires it.
What this page helps buyers answer
- Which 4N batch data is currently documented on the website.
- How 4N is technically positioned via secondary segregation.
- Which ingot formats and production standards are consistently stated.
- How RoHS, ISO, and energy documentation support supplier qualification.
FAQ on 4N
Common questions about 4N high-purity aluminium
The questions below focus on technical positioning and sourcing relevance.
What purity level does HUABO typically show for 4N?
HUABO's 4N grade has a minimum purity of >=99.99% with typical batch data showing 99.9936% aluminium. Key impurities are Si at 0.0015% and Fe at 0.0011%. This page documents the 4N supply basis with published batch data. When applications require higher purity, HUABO can also supply 4N5 up to 99.995%, for example for semiconductor manufacturing, optical coatings, sputtering targets, and electronic-grade aluminium where ppm-level impurities directly affect performance.
How should 4N be understood relative to 4N5?
4N is HUABO's publicly documented 99.99% product page. If your specification calls for 4N5, HUABO can also supply it through extended secondary segregation. For target purities between 99.993% and 99.995%, additional process cycles and tighter trace-element alignment are planned. The production route starts with 3N electrolytic primary aluminium from hydropower smelters, ensuring a low-impurity feedstock baseline.
Which formats and standards apply to 4N ingots?
Standard supply is 8-20 kg small-format ingots produced to YS/T665-2018, with each batch undergoing full chemical analysis before release. For 4N and above, ingot weight can be further refined and packaging adapted for sensitive applications. A Certificate of Analysis (CoA) with comprehensive trace element data is provided with each shipment, suitable for incoming quality inspection in semiconductor and electronics supply chains.
Which documents support 4N sourcing?
HUABO provides RoHS 2.0 compliance reports (No. TST20241108094C/E, tested by Dongguan True Safety Testing Co., Ltd. per IEC 62321), ISO 9001 (No. 36826Q00159R001), ISO 45001 (No. 3682653261798R0S), and Green-Power Certificate GPA-PMA20230821002 from the China Green Metal Certification Center. For 4N sourcing, HUABO additionally provides extended trace element reports and supports customer-specific quality documentation requirements. SDS and per-batch CoA available on request.
Related pages
Continue from the 4N page
These internal links deepen the topic and improve discoverability for product-grade and evidence queries.
3N8 high-purity aluminium
The adjacent high-purity grade for sourcing between standard material and 4N.
Open 3N8 page3N5 high-purity aluminium
The next level below 4N with its own product page, batch data, and RFQ context.
Open 3N5 pageSecondary segregation
Technology page describing the process basis behind 4N and 4N5 up to 99.995%.
Open technology pageCustom specification
Project page for weight, chemistry targets, and packaging alignment in qualified inquiries.
Open specification pageRoHS 2.0 evidence
Interpretation of reports TST20241108094C and TST20241108094E for German sourcing.
Open RoHS pageGreen-powered aluminium
Documented energy positioning backed by certificate GPA-PMA20230821002.
Open energy pageBuyer FAQ
Answers on samples, lead times, certifications, and the Guangyuan facility.
Open FAQContact
4N inquiry for Germany
Contact for technical discussion on purity targets, ingot size, samples, and RFQ preparation.
Sales Representative
Felix Zhao
Mobile: +4915906479598
Email: contact@wffuture.de
Typical response within one business day for qualified 4N inquiries.