| About |
|---|
| Celcon® acetal copolymer grade GC25A is a glass coupled formulation containing 25% reinforced fiber glass. This grade offers excellent strength, stiffness and heat distortion temperature with lower mold shrinkage, minimum thermal expansion, excellent dimensional stability and good moldability. Chemical abbreviation according to ISO 1043-1: POM&& |
| Product Description | |
|---|---|
| Supplier | Celanese |
| Generic | Copolymer Polyformaldehyde |
| Material Status | Commercial: Active |
| Features | Good Rigidity,Excellent Processability,Good Dimensional Stability,Low contractility,Chemical coupling |
| Availabilitys | North America,Latin America |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.58 | g/cm³ | ASTM D792 |
| Density | 1.58 | g/cm³ | ISO 1183 |
| Shrinkage rate | ISO 294-4 | ||
| TD | 1.4 | % | ASTM D955 |
| MD | 0.40 | % | ASTM D955 |
| TD | 1.2 | % | ISO 294-4 |
| MD | 0.40 | % | ISO 294-4 |
| Water absorption rate | |||
| Saturation, 23 ℃ | 0.80 | % | ISO 62 |
| Equilibrium, 23 ℃, 50% RH | 0.20 | % | ISO 62 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Tensile modulus | 8600 | MPa | ISO 527-2/1A/1 |
| tensile strength | ASTM D638 | ||
| fracture | 106 | MPa | ISO 527-2/1A/5 |
| Fracture, -40 ℃ | 159 | MPa | ASTM D638 |
| Fracture, 23 ℃ | 110 | MPa | ASTM D638 |
| Fracture, 71 ℃ | 68.9 | MPa | ASTM D638 |
| Tensile strain | |||
| fracture | 2.0 | % | ISO 527-2/1A/5 |
| Bending modulus | |||
| 23℃ | 8700 | MPa | ISO 178 |
| bending strength | |||
| 23℃ | 160 | MPa | ISO 178 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Notched Impact Strength | |||
| 23℃ | 6.4 | kJ/m² | ISO 179/1eA |
| Charpy Unnotch Impact strength | ISO 179/1eU | ||
| -30℃ | 35 | kJ/m² | ISO 179/1eU |
| 23℃ | 25 | kJ/m² | ISO 179/1eU |
| Impact strength of cantilever beam notch | |||
| 23℃ | 6.0 | kJ/m² | ISO 180-1A |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed | 160 | ℃ | ISO 75-2/A |
| 1.8 MPa, unannealed | 163 | ℃ | ASTM D648 |
| Melting peak temperature | 166 | ℃ | ASTM D3418 |
| Melting temperature | 165 | ℃ | ISO 11357-3 |
| Linear coefficient of thermal expansion | |||
| TD | 1.2E-4 | 1/℃ | ISO 11359-2 |
| MD | 2.5E-5 | 1/℃ | ISO 11359-2 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Volume resistivity | 1.4E+14 | ohms·cm | ASTM D257 |
| 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 | 90 to 120 | °C | |
| Injection pressure | 90.0 to 140 | MPa | |
| Injection speed | Slow | ||
| Hold pressure | 90.0 to 140 | MPa | |
| Back pressure | 0.00 to 2.00 | MPa | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 10°C/min |
| 【 Disclaimer 】 Guangzhou Soliao Information Technology Co., Ltd. reserves all rights. The information in this data table was obtained from the manufacturer of the material on soliao.com. Soliao.com makes every effort to ensure the accuracy of this data. However, the search company does not assume any responsibility for the uncertainty and consequences caused to users by these data values and suggestions, and strongly recommends verifying the data values with the material supplier before the final selection of materials. |