Industrial-Grade High-Purity Zinc-Aluminum Master Alloy

Product Specifications

Technical details and manufacturing context for Industrial-Grade High-Purity Zinc-Aluminum Master Alloy

Definition

Industrial-Grade High-Purity Zinc-Aluminum Master Alloy is a pre-melted, homogeneous alloy ingot specifically formulated for controlled addition to non-ferrous metal production processes. This master alloy ensures precise chemical composition control during aluminum and zinc alloy manufacturing, reducing segregation and improving metallurgical consistency. It serves as a critical raw material for producing specialized zinc-aluminum alloys with enhanced mechanical properties and corrosion resistance. The high-purity formulation minimizes impurities that could compromise final product quality in demanding industrial applications. The alloy is supplied as ingots with a standard weight of 7–9 kg, facilitating handling and precise dosing. Its melting point range of 420–480 °C allows efficient dissolution into molten base metals, ensuring uniform distribution. The density of 6.6–7.2 g/cm³ supports accurate volume calculations for batch preparation. Mechanical properties in the as-cast condition include a tensile strength of 200–280 MPa and elongation of 2–5%, as referenced by ASTM B792. Electrical conductivity is 25–30% IACS (relative to copper) per IEC 60028, and thermal conductivity is 100–120 W/(m·K). The coefficient of thermal expansion is 22–25 × 10⁻⁶/K over 20–100 °C. Corrosion resistance is rated as excellent based on salt spray testing exceeding 500 hours per ISO 9227. Compositional parameters, including aluminum content of 4–6% and zinc content of 94–96%, with impurity levels ≤0.01 ppm, are specified under GB/T 8738. These values are reference ranges; actual product specifications must be confirmed with the legal manufacturer or supplier for the specific model or application.

Working Principle

The master alloy acts as a concentrated alloying agent. When added to a molten base metal, it dissolves uniformly due to its melting point range of 420–480 °C, which is compatible with typical non-ferrous melt temperatures. The homogeneous pre-alloyed structure ensures that the aluminum and zinc are distributed evenly, preventing segregation. The controlled composition, with aluminum content of 4–6% and zinc content of 94–96%, allows for predictable dilution ratios when calculating the required addition to achieve a target alloy composition. The high-purity formulation, with impurity levels ≤0.01 ppm, minimizes the introduction of unwanted elements. The dissolution process is temperature-dependent; maintaining the melt within the specified range ensures complete and rapid dissolution, while avoiding excessive oxidation or volatilization. The ingot weight of 7–9 kg facilitates accurate weighing and addition, supporting consistent batch-to-batch quality.

Common Materials

High-purity zinc (Zn), High-purity aluminum (Al), Trace alloying elements

Technical Parameters

Parameter	Typical range	Notes & selection driver
Aluminum ContentRequired	4–6 %	Precise aluminum percentage in master alloyGB/T 8738
Zinc ContentRequired	94–96 %	Precise zinc percentage in master alloyGB/T 8738
Impurity LevelRequired	≤0.01 ppm	Maximum allowable impurity concentrationGB/T 8738
Melting PointRequired	420–480 °C	Temperature range for alloy dissolution
DensityRequired	6.6–7.2 g/cm³	Material density for volume calculations
Standard Ingot Weight	7–9 kg	Manufactured unit weight for industrial handling
Tensile Strength	200–280 MPa	As-cast conditionASTM B792
Elongation	2–5 %	As-cast conditionASTM B792
Electrical Conductivity	25–30 % IACS	Relative to copperIEC 60028
Thermal Conductivity	100–120 W/(m·K)	At room temperature
Coefficient of Thermal Expansion	22–25 10⁻⁶/K	20–100°C
Corrosion Resistance	Excellent	Salt spray test >500 hISO 9227

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Primary Zinc Matrix Part
Base metallic structure providing zinc content

Material: High-purity electrolytic zinc
Aluminum Alloying Element Part
Controlled aluminum addition for alloy composition

Material: High-purity aluminum
Trace Element Package Optional Part
Minor alloying elements for specific property enhancement

Material: Controlled metallic additives

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Industrial-Grade High-Purity Zinc-Aluminum Master Alloy.

Manufacturers of Industrial-Grade High-Purity Zinc-Aluminum Master Alloy

Manufacturer profiles associated with Industrial-Grade High-Purity Zinc-Aluminum Master Alloy.

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Frequently Asked Questions

What is the typical aluminum content in this master alloy?

The aluminum content is specified as 4–6% by weight, as per GB/T 8738. This range is a reference; the exact value for a specific batch or product should be confirmed with the supplier.

How is the master alloy added to molten metal?

The master alloy is added to the molten base metal at temperatures within its melting point range of 420–480 °C. It dissolves uniformly, ensuring even distribution of alloying elements. The ingot weight of 7–9 kg facilitates controlled addition.

What are the mechanical properties of the resulting alloy?

In the as-cast condition, the tensile strength is 200–280 MPa and elongation is 2–5%, as referenced by ASTM B792. These values are indicative and should be verified for the final alloy composition and casting conditions.

What standards apply to this master alloy?

Compositional parameters are specified under GB/T 8738, mechanical properties under ASTM B792, electrical conductivity under IEC 60028, and corrosion resistance under ISO 9227. These standards serve as references; compliance should be confirmed with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Atmospheric pressure (standard foundry conditions)
other spec:	Slurry concentration: 0.5-3.0 wt% in molten base metal, Flow rate: Batch addition (not continuous flow)
temperature:	Melting range: 380-450°C (716-842°F), Processing temp: 400-430°C (752-806°F)