Industry-Verified Manufacturing Data (2026)

High-Purity Copper-Zinc Master Alloy

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard High-Purity Copper-Zinc Master Alloy used in the Non-Ferrous Metal Production sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical High-Purity Copper-Zinc Master Alloy is characterized by the integration of Copper Matrix and Zinc Alloying Element. In industrial production environments, manufacturers listed on CNFX commonly emphasize Electrolytic Copper construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Pre-alloyed copper-zinc base material for brass production

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Product Specifications

Technical details and manufacturing context for High-Purity Copper-Zinc Master Alloy

Definition
A precisely formulated master alloy containing high-purity copper and zinc in predetermined ratios, used as a foundational material in brass manufacturing. This pre-alloyed material ensures consistent composition and reduces melting time in secondary production processes. It serves as the primary raw material for producing various brass alloys with specific mechanical and corrosion-resistant properties. The master alloy format minimizes segregation and improves yield in downstream casting operations.
Working Principle
Pre-melted and solidified alloy that provides controlled copper-zinc ratios for consistent brass production when remelted with additional elements
Common Materials
Electrolytic Copper, High-Purity Zinc
Technical Parameters
  • Primary zinc concentration in alloy (%) Per Request
  • Primary copper concentration in alloy (%) Per Request
Components / BOM
  • Copper Matrix
    Primary metallic base providing conductivity and strength
    Material: High-purity electrolytic copper
  • Zinc Alloying Element
    Alloying component for brass formation and corrosion resistance
    Material: High-purity refined zinc
  • Trace Element Package Optional
    Controlled minor elements for specific brass properties
    Material: Various metallic additives
Engineering Reasoning
Melting temperature: 900-940°C, Zinc content: 30-40 wt%, Density: 8.4-8.6 g/cm³
Zinc vapor pressure exceeds 1 atm at 907°C (boiling point), causing zinc fuming and composition shift
Design Rationale: Selective zinc vaporization due to vapor pressure differential (Zn: 1 atm at 907°C vs Cu: 1 atm at 2567°C) during melting, leading to alloy composition deviation beyond ±0.5 wt% Zn specification
Risk Mitigation (FMEA)
Trigger Insufficient melt protection with nitrogen atmosphere below 99.99% purity
Mode: Surface oxide formation exceeding 50 μm thickness, creating inclusion defects in final brass
Strategy: Install oxygen analyzer with feedback control to maintain <10 ppm O₂ in melting furnace atmosphere
Trigger Thermal gradient exceeding 15°C/cm during solidification
Mode: Macrosegregation with zinc depletion zones below 28 wt% in localized regions
Strategy: Implement electromagnetic stirring at 0.1-0.3 Tesla field strength during casting to ensure uniform composition

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for High-Purity Copper-Zinc Master Alloy.

Brass Master Alloy Cu-Zn Master Alloy Copper Zinc Pre-alloy high purity copper zinc master alloy copper zinc base material for brass pre-alloyed brass production material low impurity copper zinc ingot electrolytic copper zinc alloy

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 1.5 bar (for controlled atmosphere melting)
flow rate: N/A (solid master alloy addition)
other spec: Alloy composition: Cu 60-70%, Zn 30-40%, trace elements <0.5%
temperature: Melting range: 900-1100°C (1652-2012°F), Processing temp: 950-1050°C (1742-1922°F)
slurry concentration: N/A (solid form)
Media Compatibility
✓ Brass melting furnaces (induction/crucible) ✓ Continuous casting brass production lines ✓ Brass foundry operations with controlled atmosphere
Unsuitable: High-sulfur environments (causes hot shortness in brass)
Sizing Data Required
  • Required brass production volume (kg/month)
  • Target brass alloy composition (Cu/Zn ratio)
  • Melting furnace capacity and addition method

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Selective leaching (dezincification)
Cause: Electrochemical corrosion in chloride-containing environments preferentially removes zinc from the alloy matrix, leaving porous copper structure vulnerable to mechanical failure.
Intergranular corrosion cracking
Cause: Precipitation of zinc-rich phases at grain boundaries during improper heat treatment or welding creates galvanic cells that initiate stress corrosion cracking along grain boundaries.
Maintenance Indicators
  • Visible reddish-brown powdery deposits (copper oxides) indicating active corrosion
  • Audible high-frequency pinging or cracking sounds during thermal cycling indicating micro-crack propagation
Engineering Tips
  • Implement cathodic protection with sacrificial zinc anodes in aqueous applications to prevent dezincification
  • Control cooling rates during heat treatment to maintain zinc in solid solution and avoid grain boundary precipitation

Compliance & Manufacturing Standards

Reference Standards
ASTM B747 - Standard Specification for Copper-Zinc Alloy Plate, Sheet, Strip, and Rolled Bar ISO 1190-1 - Copper and copper alloys - Designation DIN 17660 - Copper-zinc alloys (brass) - Chemical composition and forms of wrought products
Manufacturing Precision
  • Chemical composition: Cu +/- 0.5%, Zn +/- 0.3%
  • Dimensional tolerance: Thickness +/- 0.05mm for strip forms
Quality Inspection
  • Optical Emission Spectrometry (OES) for chemical composition verification
  • Metallographic examination for microstructure and homogeneity assessment

Factories Producing High-Purity Copper-Zinc Master Alloy

Verified manufacturers with capability to produce this product in China

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✓ 95% Supplier Capability Match Found

P Procurement Specialist from Brazil Feb 24, 2026
★★★★★
"Found 15+ suppliers for High-Purity Copper-Zinc Master Alloy on CNFX, but this spec remains the most cost-effective."
Technical Specifications Verified
T Technical Director from Canada Feb 21, 2026
★★★★★
"The technical documentation for this High-Purity Copper-Zinc Master Alloy is very thorough, especially regarding Copper Content (%)."
Technical Specifications Verified
P Project Engineer from United States Feb 18, 2026
★★★★★
"Reliable performance in harsh Non-Ferrous Metal Production environments. No issues with the High-Purity Copper-Zinc Master Alloy so far."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

13 sourcing managers are analyzing this specification now. Last inquiry for High-Purity Copper-Zinc Master Alloy from Brazil (1h ago).

Frequently Asked Questions

What are the typical copper and zinc content ranges in this master alloy?

The copper content typically ranges from 50-70%, while zinc content ranges from 30-50%, depending on the specific brass formulation requirements.

How does this master alloy improve brass production efficiency?

As a pre-alloyed material, it reduces melting time, ensures uniform composition, minimizes zinc loss through oxidation, and provides consistent impurity control for predictable brass properties.

What impurity levels can be expected with this high-purity master alloy?

Impurity levels are typically maintained below 100 ppm, with strict control of elements like lead, iron, and tin to ensure optimal brass quality and performance characteristics.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Non-Ferrous Metal Production sector.

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