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PETP and PETP-GL

(Polyethylene terephtalate)
PETP offers outstanding sliding properties with very good wear resistance and is an excellent material for high-duty sliding applications. This applies also in applications where high humidity or dampness is expected.

PETP-GL adds a special homogeneously distributed solid lubricant for further improvements in sliding properties and wear resistance.

Options

SHAPES:
Plates, rods, tubes and
heavy walled tubes

COLOURS:
PETP - natural (white), black
PETP-GL - light grey
Can be used in general mechanical, automotive, precision, electrical and communication engineering. Typical applications include:

Bushings Sliding components Valves and valve bodies
Gear wheels Electrical insulators Counter components
Cam disks Pump components Precision bearings
Cams and ratchets Casing components
Technical data Standard Unit PA 6 G Oilamid® Calaumid®
612
Calaumid®
1200
PA 6 PA 66 POM PET PET GL
Mechanical properties                      
Density DIN 53 479 g/cm3 1,15 1,14 1,12 1,03 1,14 1,14 1,41 1,38 1,43
Tensile strength
(short duration)
DIN 53 455 MPa 80 80 80 60 70 85 65 80 75
Modulus of elasticity
in flexure
(short duration)
DIN 53 457 MPa 3.400 2.800 2.800 2.200 2.500 2.900 2.900 2.600 -
Modulus of elasticity
in tension
(short duration)
DIN 53 457 MPa 3.100 2.500 2.300 2.400 2.700 3.000 3.000 3.000 2.200
Bending strength DIN 53 452 MPa 140 135 135 90 130 135 115 125 -
Impact strength DIN 53 453 kJ/m2 n.B. n.B n.B. n. B. n.B. n. B. n. B. n. B. 30
Notch impact strength DIN 53 453 kJ/m2 > 4 > 5 >12 >15 >3 >3 >10 >4 2
Ball indention
hardness H358/30
DIN 53 456 MPa 160 140 140 100 160 170 150 140 -
Sliding friction
coefficient (dry run) 1)
- - 0,36 0,18 0,36 0,40 0,38 0,35 0,32 0,25 0,2
Thermal properties                      
Melting temperature - °C + 220 + 220 195 190 + 218 + 265 + 178 + 255 + 255
Coefficient of linear
expansion 2)
DIN VDE 0304 10-5 . K-1 7 - 8 7 - 8 7-8 10-11 8-9 9-10 9-10 7-8 7-8
Service temperature
range 3)
- °C -40 to
+105
-40 to
+105
-40 to
+105
-60 to
+110
-60 to
+100
-30 to
+100
-30 to
+100
-20 to
+100
-20 to
+110
Max. Service
temperature range 4)
- °C + 170 + 160 + 160 + 150 + 140 + 150 + 140 + 160 + 160
Thermal conductivity DIN 52 612 W/(K.m) 0,23 0,23 0,23 0,23 0,23 0,23 0,31 0,24 0,23
Water absorption                      
Moisture absorption 5)
(maximum)
DIN 53 715 % 2,2 1,8 1,9 0,9 3,0 2,5 0,2 0,25 0,2
Moisture absorption 6)
(saturated)
DIN 53 495 % 6,5 5,5 5,8 1,4 10,0 9,0 0,8 0,5 0,4

 
1) against steel, hardened and ground
P = 0.05 MPa,
V = 0.6 m/sec
t = 40 °C near sliding surface
2) for the temperature range from + 23°C to + 60°C
3) Empirical values with finished components without load in air, depending on type and form of heat application, long term (= months)
4) Empirical values with finished components without load in air, depending on type and form of heat application, short term (= max. 1 h)
5) In normal ambient conditions 23 °C / 50 % RH
6) In water
1 MPa = 1 N/mm2
n. b. = non breaking

Disclaimer:
We cannot anticipate all conditions under which this information and our products, or the products of other manufacturers in combination with our products, may be used. We accept no responsibility for results obtained by the application of this information or the safety and suitability of our products, either alone or in combination with other products. Users are advised to make their own tests to determine the safety and suitability of each such product or product combination for their own purposes. Unless otherwise agreed in writing, Cut To Size Plastics sell the products without warranty and buyers and users assume all responsibility and liability for loss or damage arising from the handling and use of our products, either used alone or in combination with other products. 
For the most recent technical data and free application advice, please call Cut To Size Plastics on: (02) 9439 7066.
We expressly reserve the right to make changes to this document. Errors excepted.

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