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Aluminum-Zirconium


Our Aluminum-Zirconium (Al–Zr) master alloys improve thermal stability, raise recrystallization temperature, and help retain strength in wrought and cast aluminum systems. Production established since 1995 supports consistent zirconium dispersion and low impurity levels for extrusion, wire rod, and structural uses. Certified to IATF 16949, ISO 9001, ISO 14001, and ISO 45001, our process control and analysis deliver uniform Al3Zr dispersoids and precise Zr content. The supply network serves customers in many regions.


Core Benefits


These additions stabilize grain structure under heat exposure and support strength retention during downstream processing. They promote dimensional stability in profiles and conductor-grade products while maintaining corrosion resistance across common alloy families. Controlled dispersion yields fine, uniform intermetallics and predictable response in extrusion, rolling, and wire rod operations.


Applications


Typical uses include electrical conductor alloys and wire rod, heat-resistant profiles, automotive and aerospace components, and welding-critical sheet and plate. They are effective where dimensional stability after heat treatment is required, and in cast products that demand microstructural stability at service temperatures.


Products and Forms


We offer Al–Zr additions in commonly used compositions, packaged for clean handling and fast dissolution. Forms include cut rod, waffle ingot, and shot to suit various furnace sizes and dosing routines. Controlled impurity levels and gas content support sound casting, consistent extrusion response, and uniform mechanical properties.


AlZr5 (≈5% Zr)


This grade provides balanced recrystallization control and thermal stability, well suited for conductor-grade wire rod and medium-strength extrusions. Addition rates are tuned to the alloy system and target properties, with guidance to achieve uniform Al3Zr formation and reduce fade during holding.


AlZr10 (≈10% Zr)


This variant delivers higher Zr input per unit mass for large melts or applications that require stronger recrystallization resistance. The concentration allows flexible charging strategies while maintaining controlled dissolution behavior and a stable microstructure through downstream processing.


Composition and Purity


Each batch is produced with strict control of Fe, Si, and Cu, and monitored for gas content to support defect-resistant casting. Analytical capabilities and traceable documentation help keep zirconium levels consistent and microstructural outcomes aligned with specification targets.


Melt Practice


Preheat additions and introduce them into a clean, homogenized melt at the recommended temperature. Gentle agitation promotes uniform dispersion, and coordinated holding times support target Al3Zr formation. Adjust rates for alloy chemistry, furnace size, and downstream thermal schedules.


Compatibility


Al–Zr works alongside grain refiners such as AlTiB and modifiers like AlSr when balanced for the desired microstructure. Proper sequencing and dosing can deliver refined grain size with thermally stable dispersoids, supporting smoother extrusion, good surface quality, and reliable mechanical performance.


Customization and Support


Composition, form, and packaging can be tailored to specific furnaces and process goals. Technical support and data-backed recommendations help optimize Zr levels for strength retention, dimensional stability, and throughput in rolling, extrusion, and wire drawing. Contact us to request a quote or discuss process optimization.


Packaging and Logistics


Products are packed for clean handling and traceability, with options that simplify dosing and minimize melt contamination. Multiple plants and regional warehouses support prompt delivery and supply continuity.


Related Alloying Solutions


The portfolio also includes AlTiB grain refiners, AlMn, AlCr, AlCu, AlFe, and AlSi master alloys, plus refining and degassing fluxes.


Category Highlights


Proven capacity, multi-plant production, and technical experience underpin this category. Close chemistry control, documented consistency, and access to complementary additives help streamline melt practice and support property targets in extrusion, rolling, and conductor-grade manufacturing.

Harbin Dongsheng Metal Co.,Ltd, 
the leading manufacturer of Aluminum alloying element additives,specialize in Alloying metal tablets,Master alloys,Grain refiners,Modifiers,and Fluxes products.

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