Materials

Acetal (POM)

Overview

Kormax Acetal [technical name Polyoxymethylene] generally comes in either natural white or black colour. Acetal material has low moisture absorption [stable in humid environments], excellent machinability and its FDA compliance allows for direct contact with food stuffs. The black has improved UV resistance and is the preferred choice for outdoor / applications in direct sunlight. It has good dimensional stability but should not be used in temperatures operating above 90°C.

Common Applications

Chain guides
Chute liners
Dock fenders
Food processing machinery parts
High speed conveyors
Hopper liners
Packaging machinery parts
Star wheels
Under-chain wear strips

Key Features

Excellent wear resistance
Good chemical resistance
Excellent impact resistance at minus temperatures
Excellent value at a low cost

Material Profile

Profile
Size Range
Metric Size Range (mm)
Availability
Rod
See Size Range
25 to 250
NZ Only
Sheet
See Size Range
3 to 100
NZ Only
Diameter (mm)
Weight (Kg/MTR)
Colour 1
Colour 2
5
0.04
-
White
12
0.19
Black
-
16
0.32
Black
White
20
0.47
Black
White
25
0.74
Black
White
30
1.06
Black
-
32
1.24
Black
-
35
1.45
Black
White
40
1.87
Black
White
45
2.37
Black
White
50
2.97
Black
White
55
3.56
Black
White
60
4.20
Black
White
65
4.97
Black
White
70
5.70
Black
White
75
6.58
Black
White
80
7.46
Black
White
90
9.57
Black
White
100
11.86
Black
White
110
14.40
Black
White
120
17.05
Black
White
125
18.30
-
White
130
20.28
Black
White
140
23.45
-
White
150
26.75
Black
White
160
30.68
-
White
180
38.55
Black
White
200
47.55
Black
White
235
66.80
-
White
250
77.50
-
White
300
112.00
-
White
T (mm)
Weight (Kg/MTR)
Colour 1
Colour 2
4
5.64
-
White
5
7.05
-
White
6
8.46
Black
White
8
11.28
-
White
10
14.1
Black
White
12
16.92
Black
White
15
21.15
Black
White
20
28.2
Black
White
25
35.25
Black
White
30
42.3
Black
White
35
49.35
Black
-
40
56.4
Black
White
50
70.5
Black
White
60
84.6
Black
White
80
112.8
Black
White
100
141
Black
White

Dimensional Tolerances

Sheet
Thickness Tolerances
1 mm to 10 mm +0.2 mm to +1.0 mm
12mm to 25 mm +0.3 mm to +1.5 mm
30 mm to 50 mm +0.5 mm to +2.5 mm
60 mm to 100 mm +0.1 mm to +3.5 mm
Rod
Diameter Tolerances
5 mm to 25 mm +0.1 mm to +1.1 mm
26 mm to 56 mm +0.2 mm to +1.3 mm
60 mm to 100 mm +0.4 mm to +2.2 mm
110 mm to 150 mm +0.5 mm to +4 mm
160 mm + +1.0 mm to +6 mm

Mechanical Properties

Material Metric Values Imperial Values
Tensile Strength at Break 65 N/mm² 9400 psi
Yield Strength 67 N/mm² 9700 psi
Elongation at Yield 22% 22%
Hardness 125 MPa 125 MPa

Thermal Properties

Thermal Properties Temperature
Melting Point 165°C
Maximum Service Temperature 90°C

Resources

Data Sheet

Acetal (POM) Data Sheet

PDF (124 KB)

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

Polymer Properties Chart

PDF (100 KB)

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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.