| About |
|---|
| Celcon® LW90-F2 is an acetal copolymer formulated with a nominal 9 melt flow rate base polymer and a standard level of polytetrafluoroethylene filler (PTFE). It is designed for use in wear applications against plastic, metal, glass, or ceramic mating surfaces where silicone lubricants can not be tolerated.&& |
| Product Description | |
|---|---|
| Supplier | Celanese |
| Generic | Copolymer Polyformaldehyde |
| Material Status | Commercial: Active |
| Features | Low coefficient of friction,Lubricating,Good wear resistance |
| Availabilitys | North America,Latin America |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.40 | g/cm³ | ASTM D792 |
| Density | 1.41 | g/cm³ | ISO 1183 |
| Melt Volume Rate | |||
| 190℃，2.16 kg | 8.00 | cm³/10min | ISO 1133 |
| Shrinkage rate | ISO 294-4 | ||
| TD | 1.8 | % | ASTM D955 |
| MD | 2.2 | % | ASTM D955 |
| TD | 1.9 | % | ISO 294-4 |
| MD | 2.3 | % | ISO 294-4 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Tensile modulus | 2650 | MPa | ISO 527-2/1A/1 |
| tensile strength | |||
| Yield, 23 ℃ | 57.2 | MPa | ASTM D638 |
| yield | 63.0 | MPa | ISO 527-2/1A/50 |
| Tensile strain | |||
| yield | 9.0 | % | ISO 527-2/1A/50 |
| Bending modulus | |||
| 23℃ | 2600 | MPa | ISO 178 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Notched Impact Strength | |||
| 23℃ | 5.0 | kJ/m² | ISO 179/1eA |
| Charpy Unnotch Impact strength | ISO 179/1eU | ||
| -30℃ | 120 | kJ/m² | ISO 179/1eU |
| 23℃ | 120 | kJ/m² | ISO 179/1eU |
| Impact strength of cantilever beam notch | |||
| 23℃ | 5.1 | kJ/m² | ISO 180-1A |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed | 98.0 | ℃ | ISO 75-2/A |
| Melting temperature | 166 | ℃ | ISO 11357-3 |
| Linear coefficient of thermal expansion | |||
| TD | 9.0E-5 | 1/℃ | ISO 11359-2 |
| MD | 1.0E-4 | 1/℃ | ISO 11359-2 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 80 to 100 | °C | |
| Drying time | 3.0 | hr | |
| Barrel rear temperature | 170 to 180 | °C | |
| Barrel middle temperature | 180 to 190 | °C | |
| Barrel front temperature | 180 to 190 | °C | |
| Nozzle temperature | 190 to 200 | °C | |
| Processing (melt) temperature | 180 to 200 | °C | |
| Mold temperature | 80 to 120 | °C | |
| Injection pressure | 60.0 to 120 | MPa | |
| Injection speed | Slow-Moderate | ||
| Hold pressure | 60.0 to 120 | MPa | |
| Back pressure | 0.00 to 2.00 | MPa | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
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