PEEK machined parts

Wanna reach the peak? Try PEEK.

PEEK machined parts

Wanna reach the peak? Try PEEK.

Our PEEK milled parts are used in mechanical engineering, semiconductor technology, medical technology, the chemical industry, and many other sectors. They replace metal milled parts in applications where corrosion resistance, low weight, or electrical insulation are required. In general, PEEK milled parts are often the right choice when other engineering plastics fail at temperatures above 150 °C or cannot withstand aggressive media. Find out which PEEK compound is the right material for your application.

PEEK Plastic: Properties and applications

Polyetheretherketone (PEEK) is the best-known member of the PAEK family of materials. Under continuous operation, it retains its mechanical properties up to 240–260 °C and does not melt until around 343 °C. The glass transition temperature is 143 °C. Above this temperature, stiffness and strength decrease measurably. PEEK is resistant to most organic and inorganic chemicals and remains hydrolysis-resistant up to about 280 °C.

Because of these properties—which hardly any other engineering plastic can match—PEEK milled parts are used in applications where a component is simultaneously exposed to high temperatures, corrosive media, and mechanical stress. In semiconductor manufacturing, for example, these include mounts and insulators; in aerospace, bearing cages and hydraulic components; and in the chemical industry, pump and valve parts. In mechanical engineering, they replace metal bearings and sliding elements; in sealing technology, they withstand pressures and temperatures at which elastomers have long since failed.

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As your development partner, we’ll work with you to assess your application and recommend the right PEEK compound for your PEEK machined part.

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These PEEK compounds are ones we frequently process

Material	Compound / Additive	Hardness	Temperature °C	Strengths	Typical Application	Conformity
PEEK	Base, unreinforced	88 Shore D	−60 / +250	All-round high-performance polymer, flame retardant, high stiffness and toughness	Structural parts, back-up rings	FDA
PEEK GF 30	+ 30 % glass fibre	89 Shore D	−20 / +250	Higher stiffness, very low creep behaviour, good dimensional stability	Structural parts under sustained load	–
PEEK CF 30	+ 30 % carbon fibre	91 Shore D	−20 / +250	Very high strength and stiffness, low coefficient of thermal expansion	Heavily loaded structural parts	–
PEEK GLD 140	+ sliding additives	86 Shore D	−30 / +250	Very good sliding behaviour at the full PEEK temperature class	Plain bearings, guide elements	–
PEEK MOD	+ sliding additives (modified)	85 Shore D	−30 / +250	Very good sliding and wear behaviour	Friction- and wear-stressed parts	–
PEEK PVX	+ carbon fibre, PTFE, graphite	—	up to +260 (short-term 300)	Premium sliding compound: high heat deflection resistance, good creep resistance	Dynamically heavily loaded sliding elements	–
PEEK FG	Base, food-compliant	88 Shore D	−60 / +250	Full PEEK performance with food approval	Food and beverage industry	FDA EC 1935/2004
PEEK MG	Medical Grade	88 Shore D	−60 / +250	Sterilisable, high purity, biocompatible	Medical technology	USP VI ISO 10993 FDA
PEEK ESD 60	+ conductive additives	85 Shore D	−20 / +260	Electrically conductive, dissipative for ESD protection	Semiconductors, electronics, ESD zones	–

Applies to all PEEK variants: Resistant to almost all organic and inorganic chemicals, hydrolysis-resistant up to 280 °C, resistant to high-energy radiation. Not resistant to concentrated nitric acid, some halogens, hydrocarbons and UV.

PEEK Machined Parts from Hänssler

At Hänssler, PEEK milled parts are produced on machines designed exclusively for plastic machining. This means we use specialized tools and clamping methods to ensure the parts remain dimensionally accurate. Since we frequently machine PEEK, we stock large quantities of PEEK and PEEK compounds in our semi-finished goods warehouse. This allows us to offer short lead times and an express service. Our largest 5-axis CNC machine has a working area of 2600 x 1700 x 950 mm, which is the theoretical limit for our PEEK milled parts. However, the availability of semi-finished materials for large milled parts, especially PEEK milled parts, must be checked in advance.

Machining of LMPAEK™

LMPAEK™ is a plastic developed by Victrex specifically for 3D printing that has a property profile very similar to that of PEEK. This makes LMPAEK™ suitable for the LFAM process. Compared to PEEK, LMPAEK™ has a melting point that is about 40 °C lower, can be processed over a wider temperature range, and crystallizes more slowly. It is primarily the slower crystallization that makes the difference: the printed layers bond better, and the blank emerges from the printer with less internal stress. We can have a partner print LMPAEK™ blanks with close-to-contour shapes and then mill or turn them on our own machines. This gives us much greater flexibility in terms of the available semi-finished part sizes.

PEEK machined parts

Wanna reach the peak? Try PEEK.

PEEK Plastic: Properties and applications

Send us your drawing or give us a call

These PEEK compounds are ones we frequently process

PEEK Machined Parts from Hänssler

Machining of LMPAEK™

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