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PC

High impact strength, excellent transparency, good heat resistance, stable in mechanical and optical properties.

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PC in Machining


PC, or Polycarbonate, is a strong engineering plastic widely used in CNC machining for parts that require high impact resistance, transparency, and dimensional stability. Compared with ABS, PC offers better toughness, optical clarity, and heat resistance, making it suitable for durable and visible components.

CNC machining PC allows manufacturers to create precise plastic parts with smooth surfaces, accurate details, and reliable performance without mold tooling. It is ideal for prototypes, low-volume production, and custom components that require both strength and appearance quality.

At Longwang, we provide custom CNC machined PC parts for electronic device housings, protective covers, smart home components, learning machine shells, automotive accessories, industrial fixtures, and transparent functional parts. With CNC machining, surface finishing, assembly support, and strict quality inspection, we help customers produce reliable PC components from prototype to final delivery.

strengthGood
processabilityExcellence
corrosion resistanceExcellent
typical applicationsShell, bracket, heat sink

Machined PC

Machined PC, or Polycarbonate, is a high-strength engineering plastic known for excellent impact resistance, transparency, dimensional stability, and electrical insulation. It is ideal for CNC machined protective covers, transparent housings, electronic enclosures, fixtures, lenses, and durable functional prototypes requiring both strength and appearance quality.

Tensile Strength, Yield (MPa)Fatigue Strength (MPa)Elongation at Break (%)Hardness (Brinell)Density (g/cm³)
62 MPa39 MPa100%12 HB1.20 g/cm³

Surface Finishing Options for PC

PC CNC machined parts can achieve strong, accurate, and transparent plastic components. However, proper surface finishing is often required to improve clarity, remove tool marks, add color, enhance scratch resistance, or meet specific appearance requirements.

Pros and Cons of
PC CNC Machining

PC CNC machining is widely used for transparent, impact-resistant, and dimensionally stable plastic parts. It is ideal for protective covers, electronic housings, lenses, display windows, fixtures, and functional prototypes, but it also has limitations in cost, scratch resistance, and chemical compatibility.

pros

  • PC offers excellent toughness and impact strength, making it suitable for protective covers, housings, and durable functional parts.
  • Clear PC provides high light transmission, making it ideal for lenses, transparent covers, windows, and visual inspection components.
  • Compared with ABS, PC performs better under moderate heat, supporting applications that require higher thermal stability.
  • PC maintains stable dimensions during machining, helping produce accurate prototypes, enclosures, brackets, and precision plastic components.
  • PC provides reliable insulation properties, making it suitable for electronic housings, connectors, switch parts, and electrical protection components.

cons

  • PC is generally more expensive than ABS, which may increase costs for prototypes and low-volume production projects.
  • Transparent PC surfaces can scratch easily, so polishing, coating, or careful handling may be required for optical parts.
  • PC may be affected by certain solvents, cleaners, or chemicals, so the working environment should be checked carefully.
  • Improper machining, sharp corners, or chemical exposure may cause stress cracking, especially in transparent or load-bearing parts.
  • PC cannot replace metals in high-load structural applications requiring maximum rigidity, wear resistance, or long-term mechanical strength.

Applications of
CNC Machined PC Parts

CNC machined PC parts are used across electronics, smart home devices, automotive accessories, industrial equipment, optical components, and product development. Its combination of transparency, toughness, dimensional stability, and insulation makes it suitable for both functional and appearance-critical plastic parts.

FAQs

Your Comprehensive Metal Manufacturing Solution Provider

We offer both rapid prototyping and large-scale production, utilizing over 700 machines and experienced engineers to deliver high quality CNC parts with minimal compromise on lead time or consistency.

For precision CNC machining, we hold tolerances as tight as ±0.01mm. For sheet metal fabrication, our standard tolerance is ±0.1mm, depending on design complexity.

We process a wide range of metals including Aluminum (6061, 7075), Stainless Steel (304, 316), Titanium, Copper, Brass, and various specialty alloys.

Yes. We offer fast-turnaround prototyping to help you verify designs and functional requirements before scaling to high-volume manufacturing.

Yes, we are IATF 16949 certified for the automotive industry, along with ISO 9001 and ISO 14001 certifications to ensure global quality standards.

Prototypes usually take 3-7 days. Mass production lead times vary from 2-4 weeks depending on the project scale and secondary finishing requirements.

Yes. We have an integrated eco-friendly coating line and offer anodizing, plating, sandblasting, and laser engraving as part of our one-stop service.

Simply upload your CAD drawings (STEP, IGS, or PDF) via our contact form. Our engineers will provide a technical assessment and quote within 24 hours.

Sheet Metal Fabrication Resources

Guides, design tips, and best practices for efficient, high-quality sheet metal fabrication.

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Get in Touch With us

Helping customers grow steadily and achieve win-win development

Your trusted partner for CNC machining, sheet metal fabrication, stamping, and assembly. From prototyping to mass production with strict quality control.

tel:

0769-82763299

Mobile:

+86 18988716988

fax:

0769-82763199

Address:

No.3 Longze Road, Chang'an Town, Dongguan City, Guangdong Province, China,523861

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