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TECHNYL® PROTECT B 50H1 NC L

Halogen & Phosphorus Free FR Copolyamide 66/6 · UL94 V0 @0.4mm · Ultra-Thin Wall FR · Natural Color

Halogen & P Free
UL94 V0 @ 0.4mm
CTI 600V · PLC 0
EN 45545

V0
UL94 @ 0.4mm
600
CTI (V) · PLC 0
3750
Tensile Modulus (MPa)
33%
Oxygen Index

TECHNYL® PROTECT B 50H1 NC L (previously TECHNYL B 50H1 NATURAL L) is an unreinforced copolyamide 66/6 grade based on a non-phosphorous and non-halogenated flame retardant system, heat stabilized, for injection molding. This flame retardant grade achieves UL94 V0 at 0.4mm ultra-thin wall thickness, offering excellent filling qualities together with good stiffness. This grade is certified to EN 45545 railway standard, suitable for electrical components in railway vehicles.

📋 Product Overview

  • Polymer Type: PA66/6 Copolymer (Copolyamide)
  • Reinforcement: Unreinforced
  • Flame Retardant System: Halogen-free & Phosphorus-free
  • UL94 Rating: V0 (0.4/0.75/1.5/3.0mm)
  • Electrical Properties: CTI 600V (PLC 0), Dielectric Strength 33 kV/mm
  • Heat Stabilized: Yes
  • Processing: Injection Molding
  • Colors Available: Black, Natural
  • Certifications: RoHS, REACH, UL Yellow Card, EN 45545
  • Typical Applications: Connectors, Electrical/Electronic Applications

📊 Technical Data Sheet

Physical Properties

Property Standard Value Unit
Density ISO 1183 1.16 g/cm³</td
Water Absorption (24h, 23°C) ISO 62 1.1 %</td
Molding Shrinkage (parallel) ISO 294-4 1.1 %</td
Molding Shrinkage (normal) ISO 294-4 0.9 %</td

Mechanical Properties (DAM / Conditioned)

Property Standard Value (DAM / Cond.) Unit
Tensile Modulus ISO 527-1/-2 3750 / 2200 MPa</td
Stress at Break ISO 527-1/-2 70 / 40 MPa</td
Strain at Break ISO 527-1/-2 12 / 100 %</td
Flexural Modulus (ISO) ISO 178 3700 / 1100 MPa</td
Flexural Strength (ISO) ISO 178 130 / 40 MPa</td
Charpy Impact Strength (+23°C) ISO 179/1eU 70 / – kJ/m²</td
Charpy Impact Strength (-30°C) ISO 179/1eU 80 / – kJ/m²</td
Charpy Notched Impact (+23°C) ISO 179/1eA 3.5 / 5 kJ/m²</td
Charpy Notched Impact (-30°C) ISO 179/1eA 3 / – kJ/m²</td
Izod Notched Impact (+23°C) ISO 180/1A 5 / 6.5 kJ/m²</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+15 ohm</td
Comparative Tracking Index (CTI) IEC 60112 600 V</td
CTI Performance Level IEC 60112 PLC 0 —</td
Dielectric Strength (1 mm) IEC 60243-1 33 kV/mm</td

Flammability

Property Thickness Standard Rating/Value
UL 94 Flammability 0.40 mm UL 94 V0</td
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 (0.75 mm) — IEC 60695-2-13 750 °C</td
GWIT (1.5 mm) — IEC 60695-2-13 650 °C</td
Oxygen Index — ISO 4589 33%</td

✅ UL Yellow Card available (QMF22.E44716)

🌟 Key Advantages

  • ✅ Ultra-Thin Wall V0: UL94 V0 rating achieved at 0.4mm thin wall, meeting stringent electrical safety requirements
  • ✅ Halogen & Phosphorus Free FR: Environmentally friendly, low corrosion, low smoke
  • ✅ Excellent Electrical Properties: CTI 600V (PLC 0), Dielectric Strength 33 kV/mm
  • ✅ Excellent Filling Qualities: Excellent flowability for complex connector geometries
  • ✅ Good Stiffness: Balanced rigidity and toughness in unreinforced system
  • ✅ Heat Stabilized: Long-term thermal aging resistance
  • ✅ EN 45545 Railway Certified: Suitable for railway electrical components
  • ✅ High Oxygen Index: 33%, excellent flame retardancy
  • ✅ 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
245 – 250°C
🔥 Middle Temperature
250 – 255°C
🔥 Front Temperature
250 – 260°C
🏭 Mold Temperature
60 – 80°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 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) for equipment in contact with molten flame retardant compounds. Strictly follow recommended processing conditions to prevent corrosion and ensure product performance.

🎯 Target Applications

🔌 Connectors
Electrical connectors, terminals
⚡ Electrical/Electronic Applications
Switches, relays, circuit breakers
🚆 Railway Electrical Components
EN 45545 certified applications

📎 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 B 50H1 NC L, previously TECHNYL B 50H1 NATURAL L, Document PID-001657)

Last Updated: June 2026

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