| About |
|---|
| Chemical Resistance Application Electric/Electronic Gears, Automobilespeaker Housing&& |
| Product Description | |
|---|---|
| Supplier | LG Chemical |
| Generic | Copolymer Polyformaldehyde |
| Material Status | Commercial: Active |
| Features | Excellent Processability,Good flexibility,Good Dimensional Stability,Good liquidity,Fatigue resistance,Good wear resistance,Solvent resistance,Heat Stabilized,HB |
| Availabilitys | North America,Latin America,Asia Pacific,Europe |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.41 | g/cm³ | ASTM D792 |
| Melt Flow Rate | |||
| 190℃，2.16kg | 45 | g/10min | ASTM D1238 |
| Shrinkage rate | |||
| MD | 1.8 to 2.1 | % | ASTM D955 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | 54 | J/m | ASTM D256 |
| Impact strength of cantilever beam notch | 640 | J/m | ASTM D256 |
| Impact strength of cantilever beam notch | 650 | J/m | ASTM D256 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed, 6.35 mm | 110 | ℃ | ASTM D648 |
| 0.45 MPa, annealed, 6.35 mm | 160 | ℃ | ASTM D648 |
| Linear coefficient of thermal expansion | |||
| MD：20~80℃ | 1.0E-4 | 1/℃ | ASTM D696 |
| 0.71 mm | 110 | ℃ | UL 746 |
| 1.5 mm | 110 | ℃ | UL 746 |
| 3.0 mm | 110 | ℃ | UL 746 |
| Relative temperature index | |||
| Electrical performance | UL 746 | ||
| Strength mechanical performance | UL 746 | ||
| Impact mechanical performance | UL 746 | ||
| 0.71 mm | 95.0 | ℃ | UL 746 |
| 1.5 mm | 95.0 | ℃ | UL 746 |
| 3.0 mm | 95.0 | ℃ | UL 746 |
| 0.71 mm | 90.0 | ℃ | UL 746 |
| 3.0 mm | 100 | ℃ | UL 746 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface resistivity | 1.0E+14 | ohms | ASTM D257 |
| Volume resistivity | 1.0E+16 | ohms·cm | ASTM D257 |
| Dielectric strength | 24 | kV/mm | ASTM D149 |
| Dielectric constant | |||
| 1 MHz | 3.80 | ASTM D150 | |
| Dissipation factor | |||
| 1 MHz | 7.0E-3 | ASTM D150 | |
| Arc resistance | |||
| 3.0 mm | PLC 5 | ASTM D495 | |
| Compared to the resistance to leakage and marking index | |||
| 3.00 mm | PLC 0 | UL 746 | |
| High Arc Burning Index (HAI) | UL 746 | ||
| 0.71 mm | PLC 0 | UL 746 | |
| 1.5 mm | PLC 0 | UL 746 | |
| 3.0 mm | PLC 0 | UL 746 | |
| High voltage arc marking rate (HVTR) (3.00 mm) | PLC 0 | UL 746 | |
| Hot wire ignition | |||
| HWI | UL 746 | ||
| 0.71 mm | PLC 5 | UL 746 | |
| 1.5 mm | PLC 5 | UL 746 | |
| 3.0 mm | PLC 4 | UL 746 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Flame retardant level | UL 94 | ||
| 0.71 mm, all colors | HB | UL 94 | |
| 1.50 mm, all colors | HB | UL 94 | |
| 3.00 mm, all colors | HB | UL 94 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | |||
| yield | 62.7 | MPa | ASTM D638 |
| Tensile strain | |||
| fracture | 50 | % | ASTM D638 |
| Bending modulus | 2660 | MPa | ASTM D790 |
| bending strength | |||
| yield | 93.8 | MPa | ASTM D790 |
| friction coefficient | ASTM D1894 | ||
| With oneself – dynamic | 0.16 | ASTM D1894 | |
| With oneself – static | 0.12 | ASTM D1894 | |
| Taber abraser | |||
| 1000 cycles, 1000 g, CS-17 wheels | 14.0 | mg | ASTM D1044 |
| Rockwell hardness | |||
| M-level | 82 | ASTM D785 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 90 to 110 | °C | |
| Drying time | 3.0 to 6.0 | hr | |
| Barrel rear temperature | 160 to 180 | °C | |
| Barrel middle temperature | 180 to 200 | °C | |
| Barrel front temperature | 190 to 200 | °C | |
| Nozzle temperature | 190 to 200 | °C | |
| Processing (melt) temperature | 180 to 200 | °C | |
| Melt temperature (target) | 190 | °C | |
| Mold temperature | 60 to 80 | °C | |
| Injection pressure | 68.6 to 118 | MPa | |
| Back pressure | 3.92 to 7.84 | MPa | |
| Screw speed | 50 to 100 | rpm | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 0.39 in/min |
| 3. 0.11 in/min |
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