| About |
|---|
| Kocetal UR304 is impact strength modified grade suitable for fasteners and switches.&& |
| Product Description | |
|---|---|
| Supplier | Kolon |
| Generic | Copolymer Polyformaldehyde |
| Material Status | Commercial: Active |
| Features | Good flexibility,High impact resistance,HB |
| Availabilitys | North America,Latin America,Asia Pacific,Europe |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.36 | g/cm³ | ASTM D792 , ISO 1183 |
| Melt Flow Rate | |||
| 190℃，2.16kg | 12 | g/10min | ASTM D1238 |
| 190℃，2.16kg | 7.5 | g/10min | ISO 1133 |
| Shrinkage rate | |||
| MD | 1.7 | % | ASTM D955 |
| TD | 2.2 | % | ISO 294-4 |
| MD | 2.0 | % | ISO 294-4 |
| Water absorption rate | |||
| 23℃，24hr | 0.63 | % | ISO 62 |
| Equilibrium, 23 ℃, 60% RH | 0.25 | % | ASTM D570 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Notched Impact Strength | |||
| 23℃ | 13 | kJ/m² | ISO 179/1eA |
| Impact strength of cantilever beam notch | |||
| 23℃ | 130 | J/m | ASTM D256 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 0.45 MPa, unannealed | 145 | ℃ | ASTM D648 |
| 1.8 MPa, unannealed | 82.0 | ℃ | ASTM D648 |
| 1.8 MPa, unannealed | 72.0 | ℃ | ISO 75-2/A |
| Melting temperature | 166 | ℃ | ISO 11357-3 |
| Linear coefficient of thermal expansion | |||
| MD | 1.3E-4 | 1/℃ | ASTM D696 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface resistivity | 1.0E+16 | ohms | ASTM D257，IEC 60093 |
| Volume resistivity | 1.0E+14 | ohms·cm | ASTM D257，IEC 60093 |
| Dielectric strength | 19 | kV/mm | ASTM D149，IEC 60243-1 |
| Dielectric constant | 3.70 | ASTM D150 | |
| Dissipation factor | |||
| 1 MHz | 6.0E-3 | ASTM D150 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| 0.80 mm | HB | UL 94 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Rockwell hardness | |||
| M-level | 76 | ASTM D785 | |
| M-level | 83 | ISO 2039-2 | |
| tensile strength | |||
| Yield, 23 ℃ | 45.0 | MPa | ASTM D638 |
| 23℃ | 45.0 | MPa | ISO 527-2 |
| Tensile strain | |||
| Yield, 23 ℃ | 140 | % | ASTM D638 |
| Fracture, 23 ℃ | > 50 | % | ISO 527-2 |
| Bending modulus | |||
| 23℃ | 1800 | MPa | ASTM D790 |
| 23℃ | 1900 | MPa | ISO 178 |
| bending strength | |||
| 23℃ | 60.0 | MPa | ASTM D790 |
| 23℃ | 55.0 | MPa | ISO 178 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 80 to 90 | °C | |
| Drying time | 3.0 | hr | |
| Barrel rear temperature | 180 | °C | |
| Barrel middle temperature | 190 | °C | |
| Barrel front temperature | 190 | °C | |
| Nozzle temperature | 200 | °C | |
| Processing (melt) temperature | < 220 | °C | |
| Mold temperature | 60 to 80 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
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