Overview of materials for Acetal Homopolymer, Unreinforced

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Overview of materials for Acetal Homopolymer, Unreinforced
Categories:	Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM); Acetal Homopolymer, Unreinforced
Material Notes:	This property data is a summary of similar materials in the MatWeb database for the category "Acetal Homopolymer, Unreinforced". Each property range of values reported is minimum and maximum values of appropriate MatWeb entries. The comments report the average value, and number of data points used to calculate the average. The values are not necessarily typical of any specific grade, especially less common values and those that can be most affected by additives or processing methods.
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Physical Properties	Original Value	Comments

Density	1.34 - 1.67 g/cc	Average value: 1.42 g/cc Grade Count:140
	1.14 - 1.19 g/cc @Temperature 205 - 215 °C	Average value: 1.17 g/cc Grade Count:14
Water Absorption	0.0100 - 1.40 %	Average value: 0.447 % Grade Count:40
Moisture Absorption at Equilibrium	0.100 - 0.900 %	Average value: 0.286 % Grade Count:20
Water Absorption at Saturation	0.200 - 0.900 %	Average value: 0.712 % Grade Count:8
Linear Mold Shrinkage	0.0100 - 0.0400 cm/cm	Average value: 0.0201 cm/cm Grade Count:101
Linear Mold Shrinkage, Transverse	0.0100 - 0.0300 cm/cm	Average value: 0.0185 cm/cm Grade Count:28
Melt Flow	1.00 - 70.0 g/10 min	Average value: 12.2 g/10 min Grade Count:111

Mechanical Properties	Original Value	Comments
Hardness, Rockwell M	50.0 - 95.0	Average value: 87.7 Grade Count:30
Hardness, Rockwell R	78.0 - 122	Average value: 114 Grade Count:32
Hardness, Shore D	76.0 - 86.0	Average value: 82.7 Grade Count:7
Ball Indentation Hardness	150 - 175 MPa	Average value: 161 MPa Grade Count:5
Tensile Strength, Ultimate	45.0 - 75.8 MPa	Average value: 63.6 MPa Grade Count:42
	47.5738 - 47.5738 MPa @Temperature >=71.1 °C	Average value: 47.6 MPa Grade Count:1
Tensile Strength, Yield	13.0 - 90.0 MPa	Average value: 66.7 MPa Grade Count:106
Elongation at Break	2.00 - 110 %	Average value: 36.5 % Grade Count:131
Elongation at Yield	10.0 - 40.0 %	Average value: 20.0 % Grade Count:27
Modulus of Elasticity	1.93 - 3.72 GPa	Average value: 3.01 GPa Grade Count:85
Flexural Yield Strength	37.9 - 267 MPa	Average value: 92.8 MPa Grade Count:72
Flexural Modulus	1.38 - 3.90 GPa	Average value: 2.80 GPa Grade Count:123
Compressive Yield Strength	14.0 - 114 MPa	Average value: 67.7 MPa Grade Count:12
Compressive Modulus	0.317 - 3.10 GPa	Average value: 2.15 GPa Grade Count:4
Poissons Ratio	0.370	Average value: 0.370 Grade Count:21
Shear Strength	55.0 - 62.1 MPa	Average value: 60.3 MPa Grade Count:4
Izod Impact, Notched	0.374 - 12.8 J/cm	Average value: 1.03 J/cm Grade Count:67
	0.400 - 0.960 J/cm @Temperature -40.0 - -29.0 °C	Average value: 0.620 J/cm Grade Count:3
Izod Impact, Unnotched	0.667 J/cm - NB	Average value: 6.01 J/cm Grade Count:7
Izod Impact, Notched (ISO)	7.00 - 10.0 kJ/m²	Average value: 8.60 kJ/m² Grade Count:5
	7.00 - 8.00 kJ/m² @Temperature -30.0 - -30.0 °C	Average value: 7.67 kJ/m² Grade Count:3
Izod Impact, Unnotched (ISO)	250 - 250 kJ/m² @Temperature -30.0 - -30.0 °C	Average value: 250 kJ/m² Grade Count:1
Charpy Impact Unnotched	8.00 J/cm² - NB	Average value: 21.6 J/cm² Grade Count:24
	8.50 - 999.9 J/cm² @Temperature -30.0 - -30.0 °C	Average value: 28.3 J/cm² Grade Count:17
Charpy Impact, Notched	0.400 - 1.60 J/cm²	Average value: 0.918 J/cm² Grade Count:64
	0.400 - 1.30 J/cm² @Temperature -40.0 - -30.0 °C	Average value: 0.860 J/cm² Grade Count:19
Gardner Impact	22.6 - 22.6 J	Average value: 22.6 J Grade Count:6
Tensile Impact Strength	98.1 - 358 kJ/m²	Average value: 167 kJ/m² Grade Count:5
Coefficient of Friction	0.110 - 0.460	Average value: 0.266 Grade Count:17
Coefficient of Friction, Static	0.140 - 0.450	Average value: 0.224 Grade Count:7
Tensile Creep Modulus, 1 hour	2300 - 2900 MPa	Average value: 2740 MPa Grade Count:5
Tensile Creep Modulus, 1000 hours	1100 - 1600 MPa	Average value: 1500 MPa Grade Count:5
K (wear) Factor	11.1 - 403 x 10^-8 mm³/N-M	Average value: 134 x 10^-8 mm³/N-M Grade Count:4
Limiting Pressure Velocity	0.0513 - 0.160 MPa-m/sec	Average value: 0.101 MPa-m/sec Grade Count:3
Taber Abrasion, mg/1000 Cycles	10.0 - 13.0	Average value: 12.3 Grade Count:4

Electrical Properties	Original Value	Comments
Electrical Resistivity	1.00e+12 - 1.00e+15 ohm-cm	Average value: 5.68e+14 ohm-cm Grade Count:24
Surface Resistance	1.00e+13 - 1.00e+16 ohm	Average value: 2.84e+15 ohm Grade Count:18
Dielectric Constant	3.10 - 4.10	Average value: 3.74 Grade Count:23
Dielectric Strength	15.7 - 118 kV/mm	Average value: 30.6 kV/mm Grade Count:16
Dissipation Factor	0.00250 - 0.0100	Average value: 0.00543 Grade Count:18
Comparative Tracking Index	600 V	Average value: 600 V Grade Count:9

Thermal Properties	Original Value	Comments
CTE, linear	21.6 - 180 µm/m-°C	Average value: 104 µm/m-°C Grade Count:74
	99.0 - 99.0 µm/m-°C @Temperature 22.8 - 55.0 °C	Average value: 99.0 µm/m-°C Grade Count:1
CTE, linear, Transverse to Flow	95.0 - 120 µm/m-°C	Average value: 106 µm/m-°C Grade Count:16
Specific Heat Capacity	3.00 - 3.02 J/g-°C @Temperature 215 - 215 °C	Average value: 3.01 J/g-°C Grade Count:3
Thermal Conductivity	0.230 - 0.375 W/m-K	Average value: 0.311 W/m-K Grade Count:11
	0.220 - 0.220 W/m-K @Temperature 215 - 215 °C	Average value: 0.220 W/m-K Grade Count:2
Melting Point	157 - 180 °C	Average value: 174 °C Grade Count:71
Maximum Service Temperature, Air	80.0 - 150 °C	Average value: 104 °C Grade Count:17
Deflection Temperature at 0.46 MPa (66 psi)	124 - 340 °C	Average value: 163 °C Grade Count:97
Deflection Temperature at 1.8 MPa (264 psi)	78.8 - 277 °C	Average value: 107 °C Grade Count:135
Vicat Softening Point	148 - 180 °C	Average value: 160 °C Grade Count:6
Minimum Service Temperature, Air	-50.0 °C	Average value: -50.0 °C Grade Count:4
Flammability, UL94	HB	Grade Count:77
Flame Spread	20.0 - 80.0 mm/min	Average value: 28.5 mm/min Grade Count:13

Processing Properties	Original Value	Comments
Processing Temperature	177 - 300 °C	Average value: 227 °C Grade Count:8
Nozzle Temperature	188 - 216 °C	Average value: 195 °C Grade Count:5
Melt Temperature	177 - 230 °C	Average value: 205 °C Grade Count:55
Mold Temperature	40.0 - 121 °C	Average value: 83.8 °C Grade Count:57
Drying Temperature	71.1 - 121 °C	Average value: 83.2 °C Grade Count:54
Moisture Content	0.0500 - 0.200 %	Average value: 0.184 % Grade Count:20
Injection Pressure	68.9 - 107 MPa	Average value: 88.3 MPa Grade Count:5
Vent Depth	0.00127 cm	Average value: 0.00127 cm Grade Count:3
Annealing Temperature	160 °C	Average value: 160 °C Grade Count:20

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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O1280 / 77853

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