Shree Copper And Electricals

High-purity copper ingots with a purity of 99.999% (also known as 5N or "five nines") are ultra-pure materials used primarily in scientific research, semiconductors, and precision industries.  

Product Overview

• Applications: Ideal for high-precision components like semiconductors, EV batteries, aerospace technology, and laboratory electrodes where minimal impurities are critical for performance.
• Key Features: These ingots typically offer a specific electrical conductivity of approximately 104.7% IACS and maintain extremely low oxygen levels (typically \(\le \) 0.001%).
• Physical Form: Usually available as rectangular blocks, 1 kg "biscuit" bars, or specialized wire rods. 

Additional Information:

• Production Capacity: 100000
• Delivery Time: Ready stock
• Packaging Details: CTN

A pure copper ingot is a solid, cast block of refined copper characterized by its 99.9% (999 fine) to 99.99% purity and high electrical and thermal conductivity. 

Physical & Chemical Characteristics

• Appearance: Typically exhibits a distinctive reddish-brown metallic luster. When exposed to air and moisture, it may develop a protective green surface layer called a patina.
• Material Properties: Highly malleable and ductile, allowing it to be drawn into fine wires or hammered into thin sheets without breaking. It has a high melting point of 1,085°C and a density of approximately 8.96 g/cm³.
• Conductivity: Second only to silver, copper possesses exceptional electrical and thermal conductivity, making it essential for heat exchangers and electrical wiring. 

Standard Grades & Purity

Copper ingots are classified based on their oxygen content and refining process: - 

• Electrolytic Tough Pitch (ETP - C11000): The most common grade (99.90% purity) with a small oxygen content (0.02–0.04%), widely used for general electrical applications and bus bars.

• Oxygen-Free Copper (OFC - C10100/C10200): Higher purity (99.95%+) with minimal oxygen (below 0.001%), preferred for high-performance audio equipment and vacuum tubes.

• Deoxidized Copper: Phosphorus is often added to remove oxygen, enhancing corrosion resistance for use in plumbing and gas lines. 

A 99.99% pure copper ingot (often called "four nines" or 4N copper) is a high-grade refined metal block produced through advanced electrolytic refining to minimize impurities and oxygen content. This ultra-high purity level ensures exceptional electrical and thermal conductivity, making it the preferred choice for sensitive electronics and high-performance industrial engineering. 

Technical Specifications

• Purity: 99.99% minimum Cu content, with strictly controlled impurities (typically <0.01%) and oxygen (often <0.02% or <10 ppm for oxygen-free grades).
• Melting Point: Approximately 1,083.4°C to 1,085°C (1,984°F).
• Density: Approximately 8.92 to 8.96 g/cm³.
• Appearance: Distinctive reddish-brown or "salmon-pink" metallic luster when freshly cast or polished.
• Thermal Conductivity: High, rated at approximately 391 to 400 W/m·K.
• Electrical Resistivity: Extremely low, approximately 0.0167 to 0.0171 Ω·mm²/m.  

Common ApplicationsDue to its superior properties, 99.99% copper is used in demanding environments where standard 99.9% (3N) copper might fail.

• Electronics & Semiconductors: Used for high-efficiency circuit boards, microchips, and connectors where trace impurities can cause defects.
• Sputtering Targets: High-purity ingots are processed into targets for PVD (Physical Vapor Deposition) film coating in optics and semiconductor manufacturing.
• Renewable Energy: Essential for electric vehicle (EV) batteries, charging infrastructure, and wind turbine components to maximize energy transfer efficiency.
• Precision Casting: Ideal for high-end decorative items and sculptures due to its soft temper and excellent workability.
• Investment & Vastu: Sold as 1 kg "biscuits" or bullion bars for wealth preservation or spiritual practices, often featuring engraved purity markings and branding. 

• Shapes: Typically available as rectangular bars, cylindrical rods/billets, or small pieces/pellets for vacuum melting.
• Weights: Individual units range from small 50g collectors' pieces to 1 kg investment bars and large 10 kg to 25 kg industrial ingots.

 

Additional Information:

• Production Capacity: 100000
• Delivery Time: Ready stock
• Packaging Details: ctn