FR-4 is a manufacturing material with strength almost equal to steel and lightweight. It is a perfect fit for making parts for the electrical marine industry since it is flame retardant, has a negligible water absorption coefficient, and is machinable.

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FR4 At a Glance

Process compatibility Applications Tolerances Wall Thickness Max Part Size Strengths Lead Time Price
CNC Mill
CNC Lathe
Variety of shapes for use in electrical circuit boards with a high degree of accuracy. Not lower than ±0.125mm (±0.005″) based on the drawing ( ISO 2768) Minimum 0.80 mm  (0.03″), but this can change depending on the proportion of the wall thickness to the linear dimension. 200 x 80 x 100 cm Excellent hardness, strength almost equal to steel and lightweight. Minimum 3 days. Not more than 10 days; for all complex parts. $$

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Introduction to FR4

FR4 G10 refers to flame retardant, a rigid material with excellent toughness. FR-4 is created using particular chemicals that slow down or stop the spread of flames. Therefore it is appropriate for a variety of marine and electrical applications.


Due to excellent machinability, FR-4 can be manipulated into various shapes for use in electrical circuit boards. It has an almost negligible water absorption capacity (< 0.10%). FR-4 also offers good electrical properties and is very good for considering circuit impedance.

Precision CNC Machining for FR-4 Parts

The property of FR-4 electrical insulation and mechanical strength is critical in many industries. At Prolean, we’ve honed our skills to provide top-notch Precision CNC Machining for FR-4 Parts. Our dedication to quality and precision has positioned us as a leader in this specialized field.

Our Advanced CNC technology and methodologies ensure that each CNC-machined FR-4 component meets the required standards of accuracy with our advanced technologies and methodologies. Furthermore, our dedicated CNC experts make us the Top FR-4 CNC Machining Expertise center.

Advanced Techniques for FR-4 CNC Machining

Our approach to Precision FR-4 CNC Machining Techniques involves a blend of sophisticated equipment and skilled craftsmanship. We understand that the success of FR-4 machining lies in the details. 

  • State-of-the-Art Equipment: Leveraging the latest in CNC technology, we can achieve unparalleled accuracy and detail in our FR-4 parts.
  • Innovative Machining Strategies: We continuously refine our machining strategies to enhance precision, experimenting with cutting speeds, feeds, and tool paths to optimize outcomes.
  • Quality Control Protocols: Rigorous quality control protocols are integral to our process, ensuring each part adheres to the specified dimensions and tolerances.
Complex Geometries

Handling complex geometries is a challenge we embrace with confidence. Our  FR-4 CNC Machining experts handle the intricacies of designs, transforming challenging concepts into tangible, high-precision components. Additionally, our custom FR-4 tooling solutions can tackle any unique shape and geometry.

Custom FR-4 Parts Manufacturing

The Custom FR-4 Parts Manufacturing requires additional expertise and attention than some as-usual machining projects. Custom FR-4 CNC Machining is more than a service at Prolean; it’s an art of precision and customization. Initially, we focus on understanding that each project presents unique challenges and opportunities. Our adeptness in CNC Machining of FR-4 Materials equips us to handle a wide array of projects, making us a versatile and adaptable choice for any specialized requirement. 

Material Selection and Processing

Selecting the right-grade FR-4 material is extremely crucial for every industry application industry. Choosing the right grade creates precise, functional, and cost-effective products. Our expertise in CNC Machining of FR-4 Materials ensures that the most suitable grade is selected for each project, considering factors like thermal resistance, electrical insulation, and mechanical strength.

FR-4 Prototyping 

The prototyping stage is vital in validating the design and functionality of FR-4 components before they enter mass production. This stage is instrumental in identifying potential issues and ensuring the desired specifications and performance. Our FR-4 Prototype Machining Services play a crucial role in refining designs so you can make informed decisions before going to full-scale production. 

FR-4 Machining for Industrial Applications

In FR-4 Machining for Industrial Applications, Prolean excels at crafting components crucial for electronics, aerospace, and automotive. Our FR-4 machining services cater to these industries’ stringent requirements & standards. We deliver parts that excel in electrical insulation, durability, and precision, proving essential in high-performance and critical environments.

Global FR-4 CNC Machining Services

Our Global FR-4 CNC Machining Services extend beyond geographical boundaries, establishing us as a premier Online FR-4 CNC Machining Service Provider. Our reach in the global market is not just about serving a wider clientele; it’s about delivering uniform quality and precision to every corner of the world. 

Our decade of experience in established supply-chain networks allows us to provide Fast FR-4 CNC Machining Services worldwide. We understand the importance of time in industrial manufacturing, and our global services are designed to meet tight deadlines without compromising quality. 

  • Extensive Network: Our Global FR-4 CNC Machining Services are supported by a network of facilities and logistics, ensuring efficient service delivery worldwide.
  • Online Convenience: As an Online FR-4 CNC Machining Service Provider, we offer clients the convenience of accessing our services remotely, with easy communication and project tracking.
  • Consistent Quality: With Quality Assurance in FR-4 CNC Machining as a cornerstone of our services, we maintain consistent quality across all projects, regardless of their global location.
  • Diverse Industrial Applications: Catering to a wide range of industries globally, we tailor our FR-4 CNC machining services to meet the specific requirements of different sectors.
Cost-Effective FR-4 Machining Solutions

Our approach to FR-4 CNC Machining harmonizes quality with affordability, offering Cost-effective FR-4 CNC Machining Solutions that stand out in the market. We focus on delivering services that provide real value by understanding the importance of budget considerations in every project. This commitment to affordability does not come at the expense of quality; rather, it enhances it. 

Furthermore, we uphold transparency in FR-4 CNC Machining Cost and FR-4 CNC Machining Price, ensuring our clients are well informed about their investments. Our pricing strategy focuses on being competitive yet fair, so we can provide top-tier machining services at reasonable costs.

Our position as a leading FR-4 CNC Machining Service Company is strengthened by our ability to offer competitive pricing. 

  • Transparent Pricing Model: Our clients are always informed about the FR-4 CNC Machining Cost, with no hidden charges or unexpected fees.
  • Competitive Pricing: Being a top-tier FR-4 CNC Machining Service Company, we offer prices that are not only competitive but also reflect the high quality of our services.
  •  Instant Quotes for FR-4 CNC Machining Services:  Clients can quickly receive an estimate, facilitating faster decision-making and project initiation.
  • Value-Added Services: Our service offering goes beyond machining; we provide additional services such as finishing, assembly, and material selection advice, adding significant value to every project.
  • Quality Assurance: Even with cost-effective solutions, the quality remains a top priority. Our Quality Assurance in FR-4 CNC Machining ensures that every part meets rigorous standards.
  • Customized Solutions: We tailor our FR-4 CNC Machining Solutions to meet specific client needs, ensuring they get the best value for their specific requirements.