PEEK Parts Manufacturing

High-precision PEEK component manufacturing via 5-Axis CNC Machining and High-Temp 3D Printing (SLM/FFF). Engineered for continuous thermal endurance up to 260°C, extreme chemical immunity, and biological compliance with tight tolerances down to ±0.01 mm.

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PEEK Grade Specifications & Selection

Compare high-temperature performance, tensile strength, and reinforcement options across medical and industrial PEEK grades.

Technical Property	PEEK 450G (Unfilled)	PEEK GF30 (30% Glass)	PEEK CF30 (30% Carbon)
Density	1.30 g/cm³	1.50 g/cm³	1.40 g/cm³
Tensile Strength (Yield)	95 – 100 MPa	155 – 165 MPa	210 – 225 MPa
Flexural Modulus	4.1 GPa	9.8 GPa	18.0 GPa
Continuous Operating Temp	260 °C (500 °F)	260 °C (500 °F)	260 °C (500 °F)
Heat Deflection Temp (HDT)	160 °C	285 °C (High Heat)	315 °C (Extreme Heat)
Friction & Wear	Low Friction	High Rigidity	Ultra-Low Wear / Self-Lubricating
Primary Application	Semiconductor seals, medical tools	High-temp electrical insulators	Aerospace wear rings, oil & gas vanes

Surface Finishing & Post-Processing for PEEK

Ensure zero outgassing, high dimensional stability, and semiconductor-grade cleanliness.

As-Machined (Precision Finish)

Raw finish directly from precision 5-axis CNC milling. Naturally yields smooth surface roughness (Ra 0.8–1.6 µm) while holding tight metal-like dimensional tolerances.

Stress Relief Annealing

Multi-stage thermal oven cycle performed before and during machining to eliminate internal residual stresses in PEEK stock, preventing warping during thermal cycling.

Micro Bead Blasting

Uses fine non-contaminating abrasive media to clean part surfaces and eliminate tool lines, producing a non-reflective matte texture for surgical tools and optical fixtures.

Ultra-Pure Ultrasonic Cleaning

High-frequency deionized (DI) water ultrasonic washing that flushes out trace particulates and oils, meeting stringent semiconductor wafer-handling cleanliness standards.

Laser Engraving & Traceability

Applies clean, high-contrast serial numbers, matrix codes, and part numbers directly onto PEEK components without generating microscopic particulate debris.

Precision Surface Lapping

Ultra-precision flat lapping process that achieves mirror-smooth flatness (Ra < 0.2 µm) for high-pressure gas seals, valve seats, and liquid chromatography blocks.

Advantages and Considerations of PEEK Manufacturing

PEEK is the pinnacle of engineering thermoplastics, offering metal-replacement performance under harsh conditions.

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Advantages of PEEK

Extreme Thermal Endurance (260°C / 500°F): Maintains mechanical strength and stiffness continuously at temperatures up to 260°C and short-term spikes up to 300°C without melting or losing shape.
Unrivaled Chemical Immunity & Zero Outgassing: Impervious to almost all organic solvents, acids, alkalis, and hot water/steam, featuring extremely low outgassing under high-vacuum semiconductor environments.
Metal-Replacement Mechanical Strength: Carbon-reinforced PEEK (CF30) achieves tensile strength over 210 MPa, allowing PEEK to replace titanium or stainless steel in lightweight aerospace and oil & gas valves.
Biocompatible & Gamma Sterilization Resistant: USP Class VI compliant, fully radiolucent (transparent under X-rays), and survives thousands of harsh autoclave steam sterilizations.

Considerations & Limitations

High Material Raw Cost: PEEK resin is significantly more expensive per kilogram than standard engineering plastics like POM or ABS due to complex chemical synthesis.
Specialized High-Temp CNC Machining Needed: Requires specialized sharp diamond/carbide cutters, rigid clamping, and mandatory annealing cycles to prevent internal thermal stress cracks.
Attack by Concentrated Sulfuric Acid: While chemically immune to almost everything, PEEK can be degraded by concentrated sulfuric or nitric acid.

PEEK Parts Manufacturing FAQs

1. Why is PEEK used to replace metal components in aerospace and medical devices?

PEEK offers tensile strength comparable to aluminum while being up to 60% lighter. It does not rust, resists continuous heat up to 260°C, and is radiolucent (X-ray transparent), making it superior to metals for spinal implants, surgical tools, and lightweight aircraft brackets.

2. Why is stress-relief annealing mandatory for precision CNC machined PEEK parts?

Extruded PEEK stock retains internal thermal stresses. During heavy milling, raw heat can cause the material to warp. We perform controlled pre-machining and post-machining annealing in temperature-calibrated ovens to eliminate residual stress, guaranteeing tight metal-like tolerances (down to ±0.01 mm).

3. How do I choose between Unfilled PEEK 450G, Glass-Filled (GF30), and Carbon-Filled (CF30)?

PEEK 450G (Unfilled): Offers the highest purity, ductility, and food/medical compliance.
PEEK GF30 (30% Glass): Significantly increases stiffness, electrical insulation, and heat deflection temperature (up to 285°C).
PEEK CF30 (30% Carbon): Provides maximum tensile strength (210+ MPa), ultra-low wear, self-lubricating wear resistance, and thermal conductivity.

4. Is PEEK suitable for semiconductor vacuum chamber applications?

Yes! PEEK exhibits extremely low outgassing rates under ultra-high vacuum (UHV) and high-temperature plasma environments. It is extensively used for semiconductor wafer rings, chemical mechanical polishing (CMP) retaining rings, and IC socket fixtures.

5. What file formats are required for a custom PEEK manufacturing quote?

Please upload your 3D CAD models in STEP (.stp / .step) or IGES (.igs) format. If your component requires specific medical certifications (USP Class VI, ISO 10993), semiconductor DI washing, or annealing callouts, please attach a 2D PDF drawing.