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Machining Copper Beryllium C173: Tips, Techniques, and Safety Measures

Copper Beryllium C173, also known as Alloy 25 or UNS C17300, is a high-performance copper alloy renowned for its strength, conductivity, and resistance to wear and corrosion. These properties make it an ideal material for various industries, including aerospace, automotive, electronics, and telecommunications. In this blog post, we will delve into the intricacies of machining Copper Beryllium C173, discussing tips and techniques to maximize efficiency and ensure safety during the process.

Understanding Copper Beryllium C173

Before we dive into the machining process, it's essential to understand the unique characteristics of Copper Beryllium C173. This alloy is composed of approximately 98% copper, 1.9% beryllium, and a small amount of lead (0.20-0.60%). The addition of lead improves the alloy's machinability, making it easier to work with than other copper-beryllium alloys.

C173 is known for its high strength, which is comparable to many steel alloys. Moreover, it offers excellent electrical and thermal conductivity, making it a popular choice for electrical components and connectors. Its resistance to wear, galling, and corrosion also makes it suitable for harsh environments and demanding applications.

Machining Tips and Techniques

Copper Beryllium C173 can be machined using conventional methods, such as milling, turning, drilling, and grinding. However, certain guidelines and best practices should be followed to achieve optimal results:

1. Tool Material and Geometry: Use high-speed steel (HSS) or carbide tools with sharp cutting edges. A positive rake angle is recommended for most operations, as it reduces cutting forces and heat generation. Tool geometry should be optimized for the specific machining operation, considering factors such as material hardness and cutting speed.

2. Cutting Speeds and Feeds: Copper Beryllium C173 can be machined at high cutting speeds, which helps reduce tool wear and improve surface finish. However, it's essential to find the right balance between speed and feed to minimize the risk of work hardening. As a general guideline, start with lower speeds and feeds and gradually increase them until the desired results are achieved.

3. Coolants and Lubricants: The use of cutting fluids is highly recommended during machining, as they help dissipate heat, reduce friction, and prolong tool life. Choose a high-quality, water-soluble coolant that is compatible with copper alloys. Apply the coolant generously and consistently throughout the machining process.

4. Workholding and Fixturing: Secure the workpiece firmly using appropriate clamps, vises, or fixtures. This helps prevent movement and vibration during machining, ensuring a smooth and accurate process.

5. Deburring and Finishing: After machining, it's crucial to remove any burrs or sharp edges from the workpiece. This can be done using manual or automated deburring techniques, such as filing, sanding, or abrasive blasting. Additionally, various surface finishing processes, such as polishing, electroplating, or anodizing, can be used to enhance the appearance and performance of the final product.

Safety Measures

While machining Copper Beryllium C173, it's essential to prioritize safety, as the alloy's dust and particles can pose health risks if not properly managed. Follow these safety guidelines to minimize exposure and ensure a safe working environment:

1. Ventilation and Filtration: Ensure proper ventilation in the machining area to control airborne particles. Use local exhaust ventilation (LEV) systems, such as fume hoods or extraction arms, to capture dust and fumes at the source. Additionally, consider using air filtration systems to remove contaminants from the air.

2. Personal Protective Equipment (PPE): Wear appropriate PPE, such as safety glasses, gloves, and respiratory protection, to minimize exposure to dust and particles. Ensure that all PPE is well-maintained and regularly inspected for signs of wear or damage.

3. Housekeeping and Waste Disposal: Maintain a clean and tidy workspace by regularly cleaning and disposing of waste materials. Use a vacuum cleaner with a HEPA filter to remove dust and particles from surfaces, and avoid using compressed air, which can disperse contaminants into the air.

4. Training and Awareness: Ensure that all employees involved in the machining process are aware of the potential hazards associated with Copper Beryllium C173 and are trained in proper safety procedures and best practices.

In conclusion, machining Copper Beryllium C173 can be a highly efficient and rewarding process when the right techniques, tools, and safety measures are employed. By following the guidelines outlined in this blog post, you can maximize productivity, achieve exceptional results, and maintain a safe working environment for all involved.

CNC Copper Machining

CNC Machining Copper Material is good electrical conductivity, thermal conductivity, it is soft and good for machining as it has high plasticity, it is easily and rapidly to carry out desired shape as machining cutter can run faster than other steel materials, and also reach high precision.

Copper has a shiny reddish-orange finish, which varies slightly based on the surface finish method. Copper can be media-blasted and polished to achieve many different cosmetic surface finishes.

CNC Machining Copper Parts are widely used in the manufacture of electrical wires, cables, electric brushes, electric spark, and other electrical devices and products.

CNC Copper Machining

Benefits of CNC Copper Machining

1/ CNC Machining Copper Parts are excellent in electricity conductivity, supporting very good electric function

2/ CNC Machining Copper Parts are soft, easy to design into different shape, also suitable for many processes

3/ Copper is easy for cutting and machining, its production efficiency is much higher than steel series

4/ Good propriety for bending and shaping

5/ Heat transferring function very good, high resistance, temperature stability, long durable using

6/ Stable surface, non-surface treatment is durable, electroplating is also used on copper parts

CNC Copper Machining

Composition And Property of CNC Machining Copper

Copper Property Alloy Type Content Melting Point Hardness Tensile Strength Density
Cu-based Zn, Sn, Si, Al, Ni 1083°C HB35-45 Low 8.9 g/cm3

Common Materials Code of CNC Machining Copper

Copper Alloy Workable Processes Surface Finishing for Copper Parts Materials Code
CNC Turning, CNC Milling, CNC Drilling, Molding, Forging, Fabrication, Welding, etc. Passivation, Anodizing, Plating, Chemical Polishing, etc. Copper 110
Copper 101
Copper 145
other more Copper Alloy

Asianstar: Professional CNC Machining Supplier

From year of 2005, Asianstar Company establish the CNC Machining Factory in Guangdong Province, China.
We mostly provide CNC Turning, Milling, Drilling, Grinding, and Multi Machining processes service on various materials.
With the Belief of becoming a key supplier in the supply-chain of Precision Components, we strictly control our product quality, keep high precision on our components production, buildup the whole-process QC System and submit the satisfaction for every order.
By long term development, we have buildup partnership with world-wide clients, supporting our partners in Designing, Optimizing, Producing and Testing on each type of components.


Advantages of Asianstar CNC Copper Machining

Strong Facilities

Asianstar many CNC and stamp machines allow us to produce various copper parts, different sizes, and structures are all well done by suitable solution

Long-term Skills

Asianstar professional engineers team has experience from year 2005, producing copper parts for world wide electric products

Stable Quality

Asianstar QC system and QC tools guarantee our products are perfect result. We have procedures to control copper parts quality during production

Competitive Price

Asianstar aim to buildup partnership with clients, always choose best suitable facilities to carry out the components in competitive prices


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CNC Copper Machining


CNC Machining Copper material is soft and easy to machining on different shape of components. We mostly produce copper components for electric devices by machining and stamping

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