Ferro Copper Master Alloy, Copper-Iron Alloy, 11084-94-9, 7440-50-8, 7439-89-6

Ferro Copper Master Alloy, Copper-Iron Alloy, 11084-94-9, 7440-50-8, 7439-89-6
Product Name: Ferro Copper Master Alloy
Grades: FeCu20 (20% Fe), FeCu50 (50% Fe)

1. Product Identification

Chemical Name: Copper-Iron Alloy
Grades:

• Ferro Copper 20Fe (FeCu20)

• Ferro Copper 50Fe (FeCu50)
  Form: Solid ingot
  Appearance: Metallic, grey
  CAS Number:

• Master Alloy (Copper-Iron): 11084-94-9

• Component, Copper (Cu): 7440-50-8

• Component, Iron (Fe): 7439-89-6

Suggested HS Code: 7403.19 (Unwrought copper alloys)

2. Technical Specifications

3. Detailed Applications & Why It Is Preferred

Ferro Copper master alloys are the most efficient and consistent method for introducing iron into copper melts. Compared to pure iron powder or steel scrap, they offer superior metallurgical control, higher yield, and cleaner melts.

A. High-Strength & Wear-Resistant Brasses and Bronzes

• Typical Alloys: CuZn35Mn2Al1Fe1 (high-strength brass), CuAl10Fe3 (aluminum bronze), CuSn10Fe (tin bronze)

• Components: Heavy-duty worm gears, gear wheels, bearing housings, marine propellers, pump bodies, hydraulic cylinder parts.

• Why It Is Preferred: Iron refines the grain structure, significantly increasing yield strength, tensile strength, and hardness. This provides exceptional wear resistance under high loads and extends the service life of critical components.

B. Electrical & Electronics and Welding Industry

• Typical Alloys: CuFe2, CuFe2P (Kovar-like), CuFe10, CuFe20

• Components: Spot welding electrodes, resistance welding jaws, high-conductivity electrical connectors, semiconductor lead frames.

• Why It Is Preferred: Low iron additions (0.1% – 2.5%) increase the mechanical strength and, crucially, the softening resistance of copper at elevated temperatures, without significantly compromising electrical conductivity. The FeCu20 master alloy allows the precise compositional control required for these sensitive applications.

C. Magnetic Applications & Specialty Castings

• Typical Alloys: Cu-Fe based magnetic sensor materials, damping alloys.

• Components: Magnetic cooling components, specialized sensors, high-damping capacity cast parts.

• Why It Is Preferred: A homogeneous dispersion of fine iron particles in a copper matrix is essential for targeted magnetic properties. The master alloy guarantees this uniform distribution, preventing the agglomeration of iron particles and ensuring consistent material performance.

D. Grain Refining (Micro-Alloying)

• Small, precisely controlled iron additions serve as nucleation sites during solidification. This results in a finer, more uniform grain structure in brass and bronze castings, which enhances mechanical properties, improves pressure tightness (leak resistance), and delivers a superior surface finish.

4. Why Choose Ferro Copper Master Alloy?

The master alloy form provides critical advantages over using pure iron or scrap steel:

1. High Yield & Rapid Dissolution: Pure iron melts at 1538°C and dissolves very slowly in a copper melt (typically at 1150-1250°C). A large portion sinks or oxidizes into slag. FeCu20 (liquidus 1400°C) and FeCu50 (liquidus 1430°C) dissolve rapidly and completely due to their near-eutectic structure, achieving an iron recovery rate of over 98% and minimizing waste.

2. Precise & Homogeneous Composition Control: Master alloys have a known, consistent chemistry, making it easy to weigh and achieve the exact target iron percentage in the final alloy. This eliminates the uncertainty and contamination risks (carbon, silicon) associated with scrap steel, ensuring batch-to-batch repeatability of mechanical properties.

3. Clean Melt & Minimal Dross: The master alloy "protects" the iron within a copper matrix during addition, dramatically reducing oxidation losses and the formation of iron oxide slag. The result is a cleaner melt with less gas absorption and reduced slag removal labor.

4. Energy & Time Savings: The dissolution time of a master alloy ingot is significantly shorter than that of an equivalent amount of iron scrap. This reduces the cycle time per furnace batch, lowers energy consumption, and increases overall foundry productivity.

5. Grade Selection Guide

• FeCu20 (20% Fe) – For High-Precision Alloying: Ideal when the target final iron content is low (0.05% – 2.5% Fe total). The lower iron percentage in the master alloy allows for larger weighing tolerances without the risk of overshooting the target composition. The most accurate choice for spot welding electrodes and high-conductivity connector alloys.

• FeCu50 (50% Fe) – For High Efficiency & Low Dilution: The best choice when a larger amount of iron must be introduced (e.g., 2% – 5% Fe and above in high-strength brasses and aluminum bronzes). Its higher iron concentration means less master alloy is added, minimizing the temperature drop of the melt. It is the most robust and cost-effective replacement for iron scrap.

6. Packaging & Storage

• Packaging: Standard cast ingots, strapped on pallets for secure bulk shipment.

• Storage: Store in a dry, ventilated, and covered area. The product’s shelf life is unlimited when kept under proper conditions; surface oxidation does not affect melting performance.

7. Safety & Handling Instructions

• General: Non-hazardous during normal handling.

• Melting Operations: Always wear appropriate personal protective equipment (PPE) when handling molten metal, including heat-resistant gloves, safety glasses/face shield, aluminized protective clothing, and steel-toed boots.

• Critical Warning: Never introduce damp or wet ingots into a liquid metal bath. This can cause a violent steam explosion and severe burns. Pre-heat ingots near the furnace opening to ensure they are completely dry before immersion.

• Waste Disposal: Recover and recycle generated slag and scrap metal in accordance with local environmental regulations.

This document is for informational purposes and reflects typical product properties. The suitability of this product for a specific application should be verified by the user.