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TECHNYL® STAR AF 218 V35 BK 21N

High Flow 35% Glass Fiber Reinforced PA66 · Excellent Surface Finish · Automotive Engine Components

35% Glass Fiber
Very High Flow
Excellent Surface
Heat Stabilized

35%
Glass Fiber
11400
Tensile Modulus (MPa)
245
HDT (°C @ 1.8MPa)
Muell
Injection Compatible

TECHNYL® STAR AF 218 V35 BK 21N is a 35% glass fiber reinforced polyamide 66 (PA66) grade with very high flowability, heat stabilized, specifically developed for injection molding. Due to its outstanding flow characteristics, this grade shows exceptional processing behavior and excellent surface aspect of the finished part. This grade is ideal for use in the automotive industry for engine components and is also ideal for Muell injection moulding technology.

📋 Product Overview

  • Polymer Type: PA66 (Polyamide 66)
  • Reinforcement: 35% Glass Fiber
  • Flowability: Very High Flow
  • Surface Finish: Excellent Surface Aspect
  • Heat Stabilized: Yes
  • Processing: Injection Molding
  • Color: Black
  • Certifications: RoHS, REACH
  • Typical Applications: Automotive Applications, General Purpose, Pulleys

📊 Technical Data Sheet

Physical Properties

Property Standard Value Unit
Density ISO 1183 1.41 g/cm³</td
Humidity Absorption (23°C / 50% RH) ISO 62 1.8 %</td
Water Absorption (24h, 23°C) ISO 62 0.75 – 0.8 %</td
Molding Shrinkage (parallel) ISO 294-4 0.25 – 0.3 %</td
Molding Shrinkage (normal) ISO 294-4 0.9 – 1.0 %</td

Mechanical Properties (DAM / Conditioned)

Property Standard Value (DAM / Cond.) Unit
Tensile Modulus ISO 527-1/-2 11400 / 7000 MPa</td
Stress at Break ISO 527-1/-2 200 / 120 MPa</td
Strain at Break ISO 527-1/-2 3 / 7.3 %</td
Flexural Modulus ISO 178 9000 / 5400 MPa</td
Flexural Strength ISO 178 270 / 170 MPa</td
Charpy Impact Strength (+23°C) ISO 179/1eU 80 / 90 kJ/m²</td
Charpy Notched Impact (+23°C) ISO 179/1eA 12 / 18 kJ/m²</td

Thermal Properties

Property Standard Value Unit
Melting Temperature ISO 11357-1 260 °C</td
HDT (0.45 MPa) ISO 75 257 °C</td
HDT (1.80 MPa) ISO 75 245 °C</td

Electrical Properties

Property Standard Value Unit
Volume Resistivity IEC 62631-3-1 4E+012 ohm.m</td
Surface Resistivity IEC 62631-3-1 6E+013 ohm</td

Flammability

Property Thickness Standard Rating/Value
UL 94 Flammability 0.75 mm UL 94 HB</td
UL 94 Flammability 1.5 mm UL 94 HB</td
FMVSS Burning Rate 1 mm FMVSS 302 <100 mm/min</td

🌟 Key Advantages

  • ✅ Very High Flowability: Excellent processing behavior for complex molds and thin-wall parts
  • ✅ 35% Glass Fiber Reinforced: High rigidity and strength, tensile modulus 11400 MPa
  • ✅ Excellent Surface Finish: Outstanding surface aspect, reduces post-processing
  • ✅ Heat Stabilized: Long-term thermal aging resistance
  • ✅ High Heat Deflection Temperature: HDT 245°C @ 1.80MPa, 257°C @ 0.45MPa
  • ✅ Good Impact Resistance: Charpy notched impact 12 kJ/m² (DAM)
  • ✅ Muell Injection Compatible: Specifically suitable for Muell injection molding technology
  • ✅ Automotive Qualified: Specifically developed for automotive engine components
  • ✅ RoHS & REACH Compliant: Meets global environmental regulations

⚙️ Processing Conditions

🌡️ Drying Conditions
80°C / 2-4 hours
Dew point ≥ -20°C
💧 Max Moisture
0.2%
🔥 Rear Temperature
265 – 275°C
🔥 Middle Temperature
270 – 280°C
🔥 Front Temperature
280 – 290°C
🏭 Mold Temperature
60 – 90°C
(Up to 120°C for high surface quality)

The material is supplied in airtight bags, ready for use. If the virgin material has absorbed moisture, it must be dried with dehumidified air drying equipment (dew point minimum -20°C). Recommended drying time: 2-4 hours.

For reinforced polyamides, DOMO recommends using steel with high carbon content, purified for polishing, to avoid or limit abrasion. For example: X38CrMoV5-1 (EN Norm) – 1.2367/1.2343 (DIN Norm) or X160CrMoV12 – 1.2601/1.2379 (DIN Norm).

🎯 Target Applications

🚗 Automotive Engine Components
Intake manifolds, engine covers
⚙️ Pulleys
Drive pulleys, tensioners
🔧 General Purpose
Structural parts, brackets
🏭 Muell Injection Parts
Suitable for Muell injection molding

📎 Download & Support

※ Click download links to access the complete technical datasheet. For any questions, please contact us.

Disclaimer: The information provided in this documentation corresponds to our technical knowledge at the date of its publication and does not constitute a specification. DOMO cannot anticipate all conditions under which this information and our products may be used. Users are advised to make their own tests to determine the safety and suitability for their own purposes. Unless otherwise agreed in writing, DOMO sells the product without warranties. Unless specifically indicated, this grade is not suitable for pharmaceutical/medical applications.

Source: DOMO Chemicals Official Technical Data Sheet (TECHNYL STAR AF 218 V35 BK 21N, Document 001481)

Last Updated: June 2026

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