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Technical Specifications : Acetal plastics

Polyamide (PA)

Polyacetal (POM)

Polyethylenterephtalat (PET)
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.

Information courtesy of © 2004 Cut to Size Plastics Pty Ltd, All Rights Reserved.

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Product Info: Acetal

Polyacetal is a versatile engineering material,even for complex components and for high demands on surface quality. It has high strength and rigidity as well as good sliding properties and wear resistance at low moisture absorption.

Can be used in general mechanical, automotive, precision, electrical and communication engineering.