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Materials

PEEK

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Overview

Kormax PEEK [technical name Poly Ether Ether Ketone] is a high-performance thermoplastic. Kormax PEEK has excellent chemical resistance and at high temperatures, retains most of its physical properties. Kormax PEEK natural has FDA approval for direct contact with food and has low flammability [V0] rating. Kormax PEEK natural is a beige colour and is hard compared to other plastic materials. Care needs to be taken over the material running in contact with Kormax PEEK and ideally should be a hardened steel material to avoid wear on the mating surface. Kormax PEEK is available by request in other grades, such as glass-filled, carbon-filled and bearing grade.

Common Applications

Aviation
Bearings shells
Gears
Piston rings
Pump vanes
Seals
Semiconductors
Valve seats

Key Features

Very high mechanical strength
Excellent UV resistance
Suitable to use in temperatures up to 250°C
Easy to machine
Very high creep resistance
Very high hydrolysis resistance
Relatively low notch impact strength
Low resistance to acetone

Material Profile

Profile
Size Range
Metric Size Range (mm)
Availability
Rod
See Size Range
10 to 125
NZ Only
Sheet
See Size Range
6 to 25
NZ Only
Diameter (mm)
Weight (Kg/MTR)
Colour
10
0.11
Beige
-
16
0.29
Beige
-
20
0.44
Beige
-
25
0.69
Beige
-
30
1.00
Beige
-
36
1.43
Beige
-
40
1.74
Beige
-
50
2.77
Beige
-
60
3.92
Beige
-
80
6.96
Beige
-
100
10.80
Beige
-
125
16.93
Beige
-
T (mm)
Weight (Kg/MTR)
Colour
6
7.98
Beige
-
10
13.30
Beige
-
12
15.96
Beige
-
16
21.28
Beige
-
20
26.60
Beige
-
25
33.25
Beige
-

PEEK

PEEK

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PEEK

PEEK

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Dimensional Tolerances

Rod
Diameter Tolerances
5 mm to 25 mm +0.1 mm to +1 mm
26 mm to 56 mm +0.2 mm to +1.3 mm
60 mm to 100 mm +0.3 mm to +2.5 mm
110 mm to 150 mm +0.6 mm to +4 mm
Sheet
Thickness Tolerances
1 mm to 10 mm +0.2 mm to +1.1 mm
12 mm to 25 mm +0.3 mm to +1.5 mm

Mechanical Properties

Material Metric Values Imperial Values
Tensile Strength at Break 67 N/mm² 10000 psi
Yield Strength 115 N/mm² 17000 psi
Elongation at Yield 7% 7%
Hardness M99 MPA M99 MPA

Thermal Properties

Thermal Properties Temperature
Melting point 340°C
Maximum service temperature 250°C

Resources

Data Sheet

PEEK Data Sheet

PDF (124 KB)

https://www.kormax.com/wp-content/uploads/2022/11/Kormax-PEEK-Material-Data-Sheet-Updated-6_10.pdf

Polymer Material Selector and Application Chart

PDF (194 KB)

Polymer Chemical Resistance Chart

PDF (199 KB)

Download Our Plastics Book Here

Complete range of Kormax Thermoplastic Polymers for New Zealand industries.

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Quality Management

Quality materials, delivered to standard.

Kormax is ISO certified for ISO 9001, ISO 14001, and ISO 45001.
All Kormax products come with batch certifications.

Related Products

PETP

PETP [technical name Polyethylene terephthalate] is naturally white in colour [black is available by enquiry]. Kormax PETP has excellent stability coupled with excellent wear resistance, low friction coefficient, high strength, and resistance to moderate acid solutions, making it ideal for precision parts. Kormax PETP has a maximum continuous service temperature of 100ºC and its FDA compliance allows it to be used in direct contact with foodstuffs. Impact resistance of Kormax PETP is limited due to its high strength and rigidity, but low moisture absorption gives good stability in wet environments.