| About |
|---|
| Tarnoform® 411 – is the easy flowing, internally strengthened grade for injection-moulding of thin-walled parts of very high mechanical requirements, exhibit low mould deposit.&& |
| Product Description | |
|---|---|
| Generic | Copolymer Polyformaldehyde |
| Material Status | Commercial: Active |
| Features | Good liquidity,HB |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.41 | g/cm³ | ISO 1183 |
| Melt Flow Rate | |||
| 190℃，2.16kg | 13 | g/10min | ISO 1133 |
| Melt Volume Rate | |||
| 190℃，2.16 kg | 11.5 | cm³/10min | ISO 1133 |
| Shrinkage rate | |||
| MD：2.0 mm | 2.0 | % | ISO 294-4 |
| Water absorption rate | ISO 62 | ||
| Saturation, 23 ℃ | 0.65 | % | ISO 62 |
| Equilibrium, 23 ℃, 50% RH | 0.20 | % | ISO 62 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Notched Impact Strength | 6.0 | kJ/m² | ISO 179-1eA |
| Charpy Unnotch Impact strength | 170 | kJ/m² | ISO 179/1eU |
| Impact strength of cantilever beam notch | 6.0 | kJ/m² | ISO 180 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed | 120 | ℃ | ISO 75-2/A |
| Vicat Softening Temp | 155 | ℃ | ISO 306/B |
| Melting temperature | 172 | ℃ | ISO 11357-3 |
| Linear coefficient of thermal expansion | |||
| MD：23~55℃ | 1.1E-4 | 1/℃ | ISO 11359-2 |
| Limit of Temperature（a few hours operation） | 110 | ℃ |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface resistivity | 1.0E+14 | ohms | IEC 60093 |
| Volume resistivity | 1.0E+15 | ohms·cm | IEC 60093 |
| Dielectric strength | |||
| 2 mm | 25 | kV/mm | IEC 60243-1 |
| Dielectric constant | |||
| 1 Hz | 3.80 | IEC 60250 | |
| Compared to the leakage tracing index | |||
| Solution A | 600 | V | IEC 60112 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Flame retardant level | |||
| 3.20 mm | HB | UL 94 | |
| Burning rate | < 100 | mm/min | FMVSS 302 |
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| ISO Type | POM-K, M-GNR, 04-002 | ISO 1874 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Ball hardness | |||
| H358/30 | 170 | MPa | ISO 2039-1 |
| Tensile modulus | 3000 | MPa | ISO 527-1-2 |
| tensile strength | |||
| yield | 65.0 | MPa | ISO 527-2/50 |
| Tensile strain | ISO 527-2/50 | ||
| yield | 10 | % | ISO 527-2/50 |
| fracture | 30 | % | ISO 527-2/50 |
| Bending modulus | 2700 | MPa | ISO 178 |
| bending strength | 70.0 | MPa | ISO 178 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 100 to 120 | °C | |
| Drying time | 2.0 to 4.0 | hr | |
| Recommended maximum moisture content | < 0.10 | % | |
| Proposed maximum recycled material ratio | 10 | % | |
| Processing (melt) temperature | 180 to 230 | °C | |
| Mold temperature | 60 to 120 | °C | |
| Injection pressure | 60.0 to 120 | MPa | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 0.079 in/min |
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