描述
Hostaform C 27021 XAP C is a very easy flowing, high-performance polyacetal polyoxymethylene (POM) copolymer supplied by Celanese Corporation. This grade is specially designed for consumer packaging and food contact applications. The “XAP” designation indicates an innovative development grade with Advanced Processing characteristics, while the “C” suffix denotes its focus on Consumer packaging.
Hostaform C 27021 XAP C delivers a tensile modulus of 2,900 MPa, yield stress of 65 MPa, and yield strain of 7.5%, providing excellent mechanical performance for precision parts. The material exhibits outstanding resistance to long-term fatigue, chemicals (including solvents, fuel, and strong alkalis), wear, creep, hydrolysis, stress cracking, and thermal and oxidative degradation.
The key differentiator of Hostaform C 27021 XAP C is its regulatory compliance for food contact. The material is FDA compliant according to 21 CFR 177.2470 and its monomers and additives are listed in EU Regulation (EU) 10/2011. It offers very low emissions (VDA 275 < 2 mg/kg for natural grades) and low extractables. The material is commercially available globally in North America, Europe, Asia Pacific, Latin America, Africa, and the Middle East.
Hostaform C 27021 XAP C Key Features
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Very Easy Flow: MVR of 24 cm³/10min at 190°C/2.16kg – excellent flow for complex, thin-wall injection molded parts
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FDA Compliant: Complies with FDA 21 CFR 177.2470 for food contact applications
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EU Food Contact Compliant: Monomers and additives listed in EU Regulation (EU) 10/2011
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Very Low Emissions: VDA 275 emission < 2 mg/kg (natural grades), suitable for sensitive applications
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Low Extractables: Designed for consumer packaging with minimal extractables
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High Rigidity & Strength: Tensile modulus of 2,900 MPa and yield stress of 65 MPa
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Good Chemical Resistance: Resists solvents, fuel, strong alkalis; good hydrolysis resistance
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Thermal & Oxidative Stability: High resistance to thermal and oxidative degradation over time
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Good Heat Distortion Temperature: HDT of 106°C at 1.80 MPa
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Low Moisture Absorption: Only 0.20% at equilibrium (50% RH), ensuring stable dimensions
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Added Release Agent: Contains release agent for easier demolding
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Regulatory Compliant: Meets RoHS, EU 10/2011, and FDA requirements
Related Products
- Hostaform C 13021 – Standard High Rigidity POM Copolymer
- Hostaform C 27021 XAP – Very Easy Flow Low Emission POM
- Hostaform C 27021 AS – Very Easy Flow Antistatic POM
- Hostaform C 27021 LS colored – Very Easy Flow UV Stabilized POM
- Zytel ST801UV NC010 – Super Tough UV Stabilized PA66
Hostaform C 27021 XAP C Applications
Consumer Packaging: Bottle caps, closures, food packaging, consumer goods requiring FDA compliance and low migration
Food Contact Applications: Components in direct contact with food, meeting FDA and EU food contact regulations
Household Products: Consumer goods, household items requiring excellent flow and surface quality
Automotive Interior: Components requiring very low emissions (VDA 275 < 2 mg/kg)
Precision Engineering: Gears, bearings, sliding elements requiring high precision and dimensional stability
Injection Molded Complex Parts: Thin-wall and complex geometries enabled by very easy flow characteristics
Technical Specifications
| Property | Test Condition | Standard | Value | Unit |
|---|---|---|---|---|
| Density | — | ISO 1183 | 1.41 | g/cm³ |
| Melt Density | — | Internal | 1.20 | g/cm³ |
| Molding Shrinkage (Parallel) | — | ISO 294-4 | 1.9 | % |
| Molding Shrinkage (Normal) | — | ISO 294-4 | 1.8 | % |
| Water Absorption | Saturation, 23°C | ISO 62 | 0.65 | % |
| Humidity Absorption | 50% RH, 23°C | ISO 62 | 0.20 | % |
| MVR (Melt Volume Rate) | 190°C/2.16kg | ISO 1133 | 24 | cm³/10min |
| Tensile Modulus | 23°C | ISO 527 | 2,900 | MPa |
| Tensile Stress at Yield | 23°C, 50mm/min | ISO 527 | 65 | MPa |
| Tensile Strain at Yield | 23°C, 50mm/min | ISO 527 | 7.5 | % |
| Nominal Strain at Break | 23°C | ISO 527 | 17 | % |
| Flexural Modulus | 23°C | ISO 178 | 2,800 | MPa |
| Charpy Notched Impact | 23°C | ISO 179/1eA | 5.5 | kJ/m² |
| Charpy Notched Impact | -30°C | ISO 179/1eA | 5.5 | kJ/m² |
| Charpy Unnotched Impact | 23°C | ISO 179/1eU | 170 | kJ/m² |
| Charpy Unnotched Impact | -30°C | ISO 179/1eU | 170 | kJ/m² |
| Ball Indentation Hardness | — | ISO 2039-1 | 147 | MPa |
| HDT (1.80 MPa) | Unannealed | ISO 75-1/-2 | 106 | °C |
| Melting Temperature | 10°C/min | ISO 11357-3 | 166 | °C |
| CLTE (Parallel) | — | ISO 11359 | 110×10⁻⁶ | 1/K |
| Thermal Conductivity (Melt) | — | Internal | 0.155 | W/(m·K) |
| Specific Heat Capacity (Melt) | — | Internal | 2,210 | J/(kg·K) |
| Ejection Temperature | — | — | 140 | °C |
| Volume Resistivity | — | IEC 60093 | 1×10¹² | Ω·m |
| Surface Resistivity | — | IEC 60093 | 1×10¹⁴ | Ω |
| Dielectric Strength | — | IEC 60243-1 | 35 | kV/mm |
| Relative Permittivity (100Hz/1MHz) | — | IEC 60250 | 4.0/4.0 | — |
| Dissipation Factor (100Hz/1MHz) | — | IEC 60250 | 20/50 | ×10⁻⁴ |
| CTI (Comparative Tracking Index) | — | IEC 60112 | 600 | V |
| UL Flammability | 1.5mm | UL-94 | HB | — |
| Emission (VDA 275) | Natural grades | VDA 275 | <2 | mg/kg |
Processing Guide
| Parameter | Recommended Value |
|---|---|
| Drying Recommended | Generally not necessary due to low moisture absorption |
| Drying Temperature (if needed) | 100 – 120°C |
| Drying Time (if needed) | 3 – 6 hours |
| Max. Moisture Content | ≤ 0.2% |
| Melt Temperature Optimum | 200°C |
| Melt Temperature Range | 190 – 210°C |
| Mold Temperature Optimum | 100°C |
| Mold Temperature Range | 80 – 120°C |
| Hold Pressure Range | 60 – 120 MPa |
| Back Pressure | ~4 MPa |
| Max Screw Tangential Speed | ≤0.3 m/s |
| Screw L/D Ratio | 15:1 – 25:1 |
| Feed Temperature | 60 – 80°C |
| Hopper Temperature | 20 – 30°C |
Hostaform C 27021 XAP C FAQ
Q: What is Hostaform C 27021 XAP C?
A: Hostaform C 27021 XAP C is a very easy flow, low emission POM copolymer from Celanese specifically designed for consumer packaging and food contact applications. XAP stands for innovative development products (X) with Advanced Processing (AP) characteristics, and C stands for Consumer packaging.
Q: What does the “C” in the grade name indicate?
A: The “C” suffix indicates this grade is specially designed for Consumer packaging applications, with a focus on food contact compliance and low extractables.
Q: Is this material FDA compliant?
A: Yes, Hostaform C 27021 XAP C is FDA compliant according to 21 CFR 177.2470 for food contact applications.
Q: Is this material EU food contact compliant?
A: Yes, its monomers and additives are listed in EU Regulation (EU) 10/2011.
Q: What are the emission levels of this material?
A: Natural grades of Hostaform C 27021 XAP C have very low emissions, with VDA 275 levels below 2 mg/kg.
Q: What is the flow rate of Hostaform C 27021 XAP C?
A: It offers MVR of 24 cm³/10min at 190°C/2.16kg – very easy flow for complex parts.
Q: What is the tensile modulus of Hostaform C 27021 XAP C?
A: It offers tensile modulus of 2,900 MPa.
Q: What applications is this material suitable for?
A: It is ideal for consumer packaging, bottle caps, food contact components, household goods, and automotive interior applications requiring low emissions.
Q: What are the recommended processing conditions?
A: Melt temperature 190–210°C (optimum 200°C), mold temperature 80–120°C (optimum 100°C), with maximum moisture content below 0.2%.
Disclaimer
All technical data and information provided on this page are compiled from Celanese official TDS, technical documents, and publicly available sources for reference only and are not binding product specifications. Customers must conduct independent trial production tests matching your own production environment and equipment before mass purchasing. Product indicators, processing parameters, and properties may slightly fluctuate among different production batches. Celanese Corporation reserves the right to update specifications without prior notice. It is the customer’s responsibility to verify that the product is suitable for their intended application and complies with all applicable regulations and industry standards.
