| About |
|---|
| Lucet® HI-520 is an Acetal (POM) Copolymer material. It is available in North America for injection molding. Important attributes of Lucet® HI-520 are: Flame Rated Chemical Resistant Copolymer Creep Resistant Good Dimensional Stability&& |
| Product Description | |
|---|---|
| Supplier | LG Chemical |
| Generic | Copolymer Polyformaldehyde |
| Material Status | Commercial: Active |
| Features | Excellent Processability,Good flexibility,High impact resistance,Good Dimensional Stability,Copolymer,Good wear resistance,Solvent resistance,Heat Stabilized,HB |
| Availabilitys | North America |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.36 | g/cm³ | ASTM D792 |
| Shrinkage rate | |||
| MD | 2.0 to 2.2 | % | ASTM D955 |
| Water absorption rate | |||
| 24hr | 0.20 | % | ASTM D570 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | |||
| yield | 39.2 | MPa | ASTM D638 |
| Tensile strain | |||
| fracture | 150 | % | ASTM D638 |
| Bending modulus | 1180 | MPa | ASTM D790 |
| bending strength | |||
| yield | 49.0 | MPa | ASTM D790 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | ASTM D256 | ||
| -40℃ | 98 | J/m | ASTM D256 |
| 23℃ | 250 | J/m | ASTM D256 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | ASTM D648 | ||
| 0.45 MPa, unannealed | 125 | ℃ | ASTM D648 |
| 1.8 MPa, unannealed | 75.0 | ℃ | ASTM D648 |
| Linear coefficient of thermal expansion | |||
| MD | 1.0E-4 | 1/℃ | ASTM D696 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| 0.79 mm | HB | UL 94 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 80 to 100 | °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 210 | °C | |
| Processing (melt) temperature | 190 to 200 | °C | |
| Mold temperature | 60 to 80 | °C | |
| Injection pressure | 39.2 to 68.6 | 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. |
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