Copper Alloy 101H | Product Properties, Composition & Machinability

Copper 101H is the brand name used by Hitachi for Copper alloy 101, also known as C101. Like C101, Copper 101H is recognized as the purest form of commercially available, boasting a minimum copper content of 99.99% and an oxygen level capped at 5 parts per million. This low oxygen content contributes to its excellent conductivity, resulting in outstanding electrical performance. Copper 101H is produced with a strong focus on precision, effectively reducing impurities during manufacturing, particularly elements like phosphorus, sulfur, and lead.

Characteristics

• High Conductivity: The low oxygen levels in copper 101H provide outstanding electrical performance, making it an ideal choice for applications requiring high conductivity, such as electronics and semiconductor devices.
• Excellent Workability: Copper 101H has excellent workability in both hot and cold conditions. It can be easily shaped through processes like hot extrusion and forging. When cold worked, Copper 101H can be drawn into finer shapes with significant reductions between annealing cycles, offering versatility in manufacturing.
• Joining and Fabrication Flexibility: Copper 101H excels in various joining methods, such as soldering and brazing, due to its low levels of impurities. It is also compatible with welding techniques, ensuring strong and reliable connections in assembled components.
• Dimensional Stability: Copper alloy 101H demonstrates excellent dimensional stability, a characteristic essential for high-performance applications.

Common Applications

The high quality of copper 101H makes it suitable for a range of industries, including electronics, aerospace, semiconductor manufacturing, and cryogenic applications. In electronics, it is often used in coaxial cables, computer hookup wires, heat sinks, and lead wires for circuit breakers, ensuring reliable performance. 

In aerospace, its purity and stability are vital for components that must withstand extreme conditions. The semiconductor industry also benefits from its stringent quality control, utilizing copper 101H in applications like solderless connectors and bus bars. 

Additionally, its excellent thermal conductivity and resistance to hydrogen embrittlement make it ideal for cryogenic environments. Beyond specialized uses, copper 101H is also versatile enough for general industrial applications, such as motor and generator windings, making it a dependable choice across various fields.