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TECHNYL® PROTECT A 20 V25 NC

Red Phosphorus FR 25% Glass Fiber Reinforced PA66 · UL94 V0 · For Electrical Insulation Parts

25% Glass Fiber
UL94 V0
Red Phosphorus FR
Halogen Free

25%
Glass Fiber
V0
UL94 Rating
400
CTI (V) · PLC 1
9400
Tensile Modulus (MPa)

TECHNYL® PROTECT A 20 V25 NC (previously TECHNYL A 20 V25 NATURAL) is a red phosphorus flame retardant polyamide 66 (PA66) grade, reinforced with 25% glass fiber, heat stabilized, for injection molding. This grade provides robust UL94 V0 rating and a full UL yellow card while offering good mechanical properties. Suitable for molding insulating parts for electrical devices, and more generally for thin parts under stress.

📋 Product Overview

  • Polymer Type: PA66 (Polyamide 66)
  • Reinforcement: 25% Glass Fiber
  • Flame Retardant System: Red Phosphorus (Halogen Free)
  • UL94 Rating: V0 at 0.75/1.5/3.0mm
  • Heat Stabilized: Yes
  • Processing: Injection Molding
  • Colors Available: Black, Natural
  • Certifications: RoHS, REACH, UL Yellow Card
  • Typical Applications: Small Appliances, Electrical/Electronic, Connectors, Pumps/Compressors, White Goods, Aerosol Valves

📊 Technical Data Sheet

Physical Properties

Property Standard Value Unit
Density ISO 1183 1.38 g/cm³</td
Water Absorption (24h, 23°C) ISO 62 0.7 – 0.8 %</td
Molding Shrinkage (parallel) ISO 294-4 0.35 %</td
Molding Shrinkage (normal) ISO 294-4 1.2 %</td

Mechanical Properties (DAM / Conditioned)

Property Standard Value (DAM / Cond.) Unit
Tensile Modulus ISO 527-1/-2 9400 / 6300 MPa</td
Stress at Break ISO 527-1/-2 150 / 100 MPa</td
Strain at Break ISO 527-1/-2 2.5 / 5.2 %</td
Flexural Modulus ISO 178 8500 / 5700 MPa</td
Flexural Strength ISO 178 255 / 170 MPa</td
Charpy Impact Strength (+23°C) ISO 179/1eU 55 / 60 kJ/m²</td
Charpy Notched Impact (+23°C) ISO 179/1eA 8 / 9 kJ/m²</td
Izod Notched Impact (+23°C) ISO 180/1A 8 / 9 kJ/m²</td

Thermal Properties

Property Standard Value Unit
Melting Temperature ISO 11357-1 263 °C</td
HDT (1.80 MPa) ISO 75 244 °C</td

Electrical Properties

Property Standard Value Unit/Rating
Volume Resistivity IEC 62631-3-1 1.0E+13 ohm.m</td
Surface Resistivity IEC 62631-3-1 1.0E+13 ohm</td
Comparative Tracking Index (CTI) IEC 60112 400 V</td
CTI Performance Level IEC 60112 PLC 1 —</td
Dielectric Strength (1 mm) IEC 60243-1 30 kV/mm</td

Flammability

Property Thickness Standard Rating/Value
UL 94 Flammability 0.75 mm UL 94 V0</td
UL 94 Flammability 1.5 mm UL 94 V0</td
UL 94 Flammability 3.0 mm UL 94 V0</td
GWFI (0.75/1.5/3.0 mm) — IEC 60695-2-12 960 °C</td
GWIT (1.5 mm) — IEC 60695-2-13 725 °C</td
Oxygen Index — ISO 4589 31%</td
FMVSS Burning Rate 1 mm FMVSS 302 <100 mm/min</td

✅ UL Yellow Card available (QMF22.E44716)

🌟 Key Advantages

  • ✅ UL94 V0 Flammability Rating: V0 at 0.75mm thin wall, meeting stringent electrical safety requirements
  • ✅ Red Phosphorus FR System (Halogen Free): Environmentally friendly with excellent electrical insulation
  • ✅ Full UL Yellow Card Certified: QMF22.E44716
  • ✅ 25% Glass Fiber Reinforced: Good balance of mechanical properties
  • ✅ Heat Stabilized: Long-term thermal aging resistance
  • ✅ High Heat Deflection Temperature: HDT 244°C at 1.80MPa
  • ✅ Excellent Electrical Properties: CTI 400V (PLC 1), dielectric strength 30 kV/mm
  • ✅ Suitable for Thin-Wall Parts: Balances flame retardancy and mechanical strength
  • ✅ 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.

All reinforced, flame retardant compounds generate some level of abrasion/corrosion to steel processing equipment. DOMO recommends using steel with high chromium and high carbon content (minimum 16% chromium) to prevent corrosion and abrasion. Strictly follow recommended processing conditions.

🎯 Target Applications

🔌 Connectors
Electrical connectors, terminals
⚡ Electrical Insulation Parts
Insulators, circuit breaker components
🏠 Small/White Goods Appliances
Coffee machines, vacuum cleaner parts
🔧 Pumps/Compressors
Pump bodies, valve parts
💨 Aerosol Valves
Valve components

📎 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 PROTECT A 20 V25 NC, previously TECHNYL A 20 V25 NATURAL, Document PID-001532)

Last Updated: June 2026

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