类别：聚合物；热塑性；聚甲醛（POM）；乙缩醛共聚物，矿物填充
材料说明：mc90-hm是高矿物填充和生产非常平和零件尺寸稳定耦合M90材料（正常流程）。
矿产耦合减少翘曲，低流速
物性表：| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Specific Gravity | 1.60 g/cc | 1.60 g/cc | ASTM D792 | ||
| Density | 1.57 g/cc | 0.0567 lb/in³ | ISO 1183 | ||
| Water Absorption | 0.75 % | 0.75 % | ISO 62 | ||
| Moisture Absorption | 0.200 % | 0.200 % | 23°C/50%RH; ISO 62 | ||
| Linear Mold Shrinkage, Flow | 0.015 cm/cm | 0.015 in/in | ASTM D955 | ||
| 0.015 cm/cm | 0.015 in/in | ISO 294-4 | |||
| Linear Mold Shrinkage, Transverse | 0.012 cm/cm | 0.012 in/in | ASTM D955 | ||
| 0.013 cm/cm | 0.013 in/in | ISO 294-4 | |||
| Mechanical Properties | Metric | English | Comments | ||
| Tensile Strength, Yield | 44.1 MPa | 6400 psi | ASTM D638 | ||
| 45.0 MPa | 6530 psi | 50mm/min; ISO 527-2/1A | |||
| Elongation at Yield | 6.0 % | 6.0 % | 50mm/min; ISO 527-2/1A | ||
| Tensile Modulus | 3.55 GPa | 515 ksi | 1mm/min; ISO 527-2/1A | ||
| Flexural Strength | 72.0 MPa | 10400 psi | ISO 178 | ||
| Flexural Modulus | 3.50 GPa | 508 ksi | ISO 178 | ||
| 3.45 GPa @Temperature 22.8 °C |
500 ksi @Temperature 73.0 °F |
ASTM D790 | |||
| Izod Impact, Notched | 0.641 J/cm | 1.20 ft-lb/in | ASTM D256 | ||
| Izod Impact, Notched (ISO) | 6.10 kJ/m² | 2.90 ft-lb/in² | ISO 180/1A | ||
| Charpy Impact, Notched | 0.630 J/cm² | 3.00 ft-lb/in² | ISO 179/1eA | ||
| 0.490 J/cm² @Temperature -30.0 °C |
2.33 ft-lb/in² @Temperature -22.0 °F |
ISO 179/1eA | |||
| Thermal Properties | Metric | English | Comments | ||
| CTE, linear | 60.0 µm/m-°C | 33.3 µin/in-°F | ISO 11359-2 | ||
| CTE, linear, Transverse to Flow | 90.0 µm/m-°C | 50.0 µin/in-°F | ISO 11359-2 | ||
| Melting Point | 165 °C | 329 °F | 10°C/min; ISO 11357-1,-2,-3 | ||
| 165 °C | 329 °F | ASTM D3418 | |||
| Deflection Temperature at 1.8 MPa (264 psi) | 97.2 °C | 207 °F | ASTM D648 | ||
| 103 °C | 217 °F | ISO 75-1, -2 | |||
| Processing Properties | Metric | English | Comments | ||
| Processing Temperature | 80.0 - 120 °C | 176 - 248 °F | Cavity temperature | ||
| Zone 1 | 170 - 180 °C | 338 - 356 °F | |||
| Zone 2 | 180 - 190 °C | 356 - 374 °F | |||
| Zone 3 | 180 - 190 °C | 356 - 374 °F | |||
| Zone 4 | 190 - 200 °C | 374 - 392 °F | |||
| Die Temperature | 190 - 200 °C | 374 - 392 °F | |||
| Melt Temperature | 180 - 200 °C | 356 - 392 °F | |||
| Mold Temperature | 82.2 - 93.3 °C | 180 - 200 °F | generally preferred range, may vary with thickness | ||
| Drying Temperature | 80.0 - 100 °C | 176 - 212 °F | |||
| Dry Time | 3.00 hour | 3.00 hour | |||
| Injection Pressure | 60.0 - 120 MPa | 8700 - 17400 psi | |||
| Hold Pressure | 60.0 - 120 MPa | 8700 - 17400 psi | |||
| Back Pressure | 0.500 MPa | 72.5 psi | |||
| Hot-Working Temperature | 190 - 200 °C | 374 - 392 °F | |||
| De |
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| Injection molding | Yes | ||||
| Injection speed | slow | ||||
| Pellets | Yes | ||||
| Processing conditions | ISO 9988-2 | ||||
| Profile extrusion | No | ||||
| Special Information | Use slow injection speed and high mold steel temperature | to improve surface appearance |
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