Hostaform® C 9021 K NATURAL by Celanese is a crystalline polyacetal polyoxymethylene (POM) copolymer. Exhibits good resistance to chemicals (solvents, fuels & strong alkalis), wear, long-term fatigue, creep, hydrolysis, stress cracking, thermal and oxidative degradation. Possesses high rigidity, hardness, toughness, excellent resilience, good heat distortion temperature (to 100°C), thermal stability, good slip properties and low moisture absorption. Is suitable for processing by injection molding and sheet- & film extrusion. Used in automotive engineering, precision engineering, electric and electronic industry and domestic appliances. Hostaform® C 9021 K NATURAL complies with RoHS and meets the recommendation XXXIII for consumer goods of the BgVV and UL flame ratings.
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Compliance
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Hostaform® C 9021 K NATURAL properties
Electrical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Comparative Tracking Index (CTI) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Dielectric Strength | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Dissipation Factor | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Dissipation Factor | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Surface Resistivity | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Volume Resistivity | 0.0 Visible After Login | Visible After Login | Visible After Login |
Flammability properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Burning Rate | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Flame Rating (UL 94) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Flame Rating (UL 94) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Flame Rating (UL 94) | 0.0 Visible After Login | Visible After Login | Visible After Login |
Mechanical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Flexural Modulus | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Impact Strength, Notched Charpy | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Impact Strength, Notched Charpy | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Impact Strength, Unnotched Charpy | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Impact Strength, Unnotched Charpy | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Modulus of Elasticity | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tensile Modulus, Creep | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tensile Modulus, Creep | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tensile Strain at Break, Nominal | 0.0 Visible After Login | Visible After Login | Visible After Login |
Other properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Density, Melt | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Dielectric Constant | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Dielectric Constant | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Elongation at Yield | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Elongation at Yield | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tensile Strength at Yield | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tensile Strength at Yield | 0.0 Visible After Login | Visible After Login | Visible After Login |
Physical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Density | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Melt Volume Flow Rate (MVR) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Water Absorption | 0.0 Visible After Login | Visible After Login | Visible After Login |
Rheological properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Ejection Temperature | 0.0 Visible After Login | Visible After Login | Visible After Login |
Thermal properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| CTE, Linear, Parallel to Flow | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Heat Deflection Temperature (HDT), Unannealed | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Melting Point | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Specific Heat Capacity | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Thermal Conductivity | 0.0 Visible After Login | Visible After Login | Visible After Login |
Hostaform® C 9021 K NATURAL Processing Guidelines
Injection Molding Processing Guidelines
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Back Pressure | Visible After Login | Visible After Login | |
| Cylinder Zone 1 Temp. | Visible After Login | Visible After Login | |
| Cylinder Zone 2 Temp. | Visible After Login | Visible After Login | |
| Cylinder Zone 3 Temp. | Visible After Login | Visible After Login | |
| Cylinder Zone 4 Temp. | Visible After Login | Visible After Login | |
| Drying Temperature | Visible After Login | Visible After Login | |
| Drying Time | Visible After Login | Visible After Login | |
| Feed Temperature | Visible After Login | Visible After Login | |
| Holding Pressure | Visible After Login | Visible After Login | |
| Hooper Temperature | Visible After Login | Visible After Login | |
| Injection Pressure | Visible After Login | Visible After Login | |
| Manifold Temperature | Visible After Login | Visible After Login | |
| Melt Temperature | Visible After Login | Visible After Login | |
| Moisture Content (Max) | Visible After Login | Visible After Login | |
| Mold Temperature | Visible After Login | Visible After Login | |
| Molding Shrinkage (Normal), ISO 294-4 | Visible After Login | Visible After Login | |
| Molding Shrinkage (Parallel), ISO 294-4 | Visible After Login | Visible After Login | |
| Nozzle Temperature | Visible After Login | Visible After Login | |
| Screw Speed (25 mm diameter) | Visible After Login | Visible After Login | |
| Screw Speed (40 mm diameter) | Visible After Login | Visible After Login | |
| Screw Speed (55 mm diameter) | Visible After Login | Visible After Login | |