🛡️ TECHNYL PROTECT A 50H1 NC is an unreinforced polyamide 66 grade based on a non-phosphorous and non-halogenated flame retardant system, heat stabilized, designed for injection molding. This flame retardant grade offers excellent filling qualities combined with good stiffness and achieves UL94 V0 at 0.40mm thickness. This grade was formerly known as TECHNYL A 50H1 NATURAL, with “NC” indicating Natural Color.

📌 Product Identification & Compliance

Polymer Type PA66 (Polyamide 66)
ISO 1043 Abbreviation PA66 FR(30)
Processing Technology Injection Molding
Certifications RoHS, EC 1907/2006 (REACH), UL Yellow Card (QMFZ2.E44716), European Railways EN 45545-2
Colors Available Natural (NC), Black (BK)
Form Pellets
Typical Applications Connectors, Electrical/Electronic Components
🔑 Key Features Overview

✅ Halogen Free Flame Retardant
✅ UL94 V0 (0.40mm / 0.75mm / 1.5mm / 3.0mm)
✅ Non-Phosphorous & Non-Halogenated System — Low Smoke, Non-Corrosive
✅ Excellent Filling Qualities
✅ Good Stiffness
✅ EN 45545-2 European Railways Certified
✅ NC Natural Color — Flexible Color Customization

⚡ Physical Properties

1.16
g/cm³ Density
0.88
% Water Absorption (24h/23°C)
1.1%
Molding Shrinkage (Parallel)
1.0%
Molding Shrinkage (Normal)

🔧 Mechanical Properties

Property DAM Cond.*
Tensile Modulus (1 mm/min) 3800 MPa 1700 MPa
Stress at Break 80 MPa 45 MPa
Strain at Break 12% 100%
Flexural Modulus (ISO 178, 2 mm/min) 3700 MPa 1700 MPa
Flexural Modulus (ASTM D790, 2 mm/min) 3800 MPa 1750 MPa
Flexural Strength (ISO 178, 2 mm/min) 135 MPa 60 MPa
Flexural Strength (ASTM D790, 2 mm/min) 125 MPa 55 MPa
Charpy Impact Strength (+23°C) 80 kJ/m²
Charpy Impact Strength (-30°C) 90 kJ/m²
Charpy Notched Impact (+23°C) 3.2 kJ/m² 7 kJ/m²
Charpy Notched Impact (-30°C) 3 kJ/m²
Izod Notched Impact (+23°C) 3 kJ/m²

* Conditioned according to ISO 1110

📊 Mechanical Properties Analysis

Good Stiffness: Dry tensile modulus of 3800 MPa and flexural modulus of 3700-3800 MPa meet general structural requirements.
High Toughness After Conditioning: Strain at break increases from 12% to 100%, notched impact increases from 3.2 to 7 kJ/m².
Excellent Low-Temperature Impact: Charpy impact strength at -30°C reaches 90 kJ/m², suitable for cold environment applications.
Unreinforced Design: Provides excellent processability and surface finish.

🌡️ Thermal Properties

Melting Temperature (10°C/min) 263°C
HDT (0.45 MPa) 237°C
HDT (1.80 MPa) 85°C
🔥 Thermal Stability

• Melting point of 263°C, within standard PA66 processing range.
• Heat-aging stabilized system ensures long-term service reliability.

⚡ Electrical Properties

Volume Resistivity 3 × 10¹³ Ω·m
Surface Resistivity 3 × 10¹⁵ Ω
Comparative Tracking Index (CTI) 600 V (Solution A)
CTI Performance Level Category PLC 0 (Highest Level) Dielectric Strength (1 mm) 21 kV/mm
Electrical Safety Advantages

CTI 600V (PLC 0) — Highest comparative tracking index rating, significantly reducing tracking risk.
High Insulation Resistance: Volume resistivity of 10¹³ Ω·m, surface resistivity of 10¹⁵ Ω.
Dielectric Strength of 21 kV/mm: Excellent insulation performance for high-voltage applications.

🔥 Burning Behaviour — UL94 V0 Full Thickness Certification

UL Yellow Card QMFZ2.E44716
Flammability (0.40 mm) V0
Flammability (0.75 mm) V0
Flammability (1.5 mm) V0
Flammability (3.0 mm) V0
GWFI (0.75 / 1.5 / 3.0 mm) 960°C / 960°C / 960°C
GWIT (0.40 mm) 960°C
GWIT (0.75 mm) 960°C
GWIT (1.5 mm) 775°C
Oxygen Index (LOI) 33%
🔥 Flame Retardancy Highlights

0.40mm V0 — Achieves highest flame retardant rating even at ultra-thin wall thickness, ideal for miniaturized electronic components.
Halogen & Phosphorus Free System — Low smoke and non-corrosive gas emissions during combustion, meeting strictest environmental regulations.
GWFI 960°C — Highest glow-wire flammability index rating, meeting IEC 60335-1 appliance standard requirements.
EN 45545-2 European Railways Certified — Suitable for railway transportation applications.

🔧 Processing Conditions

Drying Conditions:
• Drying Temperature/Time: 80°C
• Suggested Max Moisture: 0.2%
• Material is supplied in airtight bags, ready for use. If moisture absorption occurs, dry with dehumidified air equipment (dew point ≤ -20°C) for 2-4 hours.

Injection Temperatures:
• Rear Zone: 260 – 270°C
• Middle Zone: 265 – 275°C
• Front Zone: 265 – 275°C

Recommended Mold Temperature:
• 60 – 80°C
• Up to 120°C for high surface quality requirements

⚠️ Injection Molding Advice

  • Equipment Corrosion Protection — All flame retardant compounds generate some level of abrasion/corrosion to processing equipment. Use steel with high chromium and high carbon content (minimum 16% chromium).
  • Process Window Control — Incorrect processing conditions (temperature, residence time, moisture level) can affect part quality and accelerate equipment wear. Strictly follow this technical data sheet.
  • Parameter Adjustability — Processing temperatures are recommendations and can be adjusted based on injection machine size, part geometry, and design.

📋 Product Renaming Information

This grade was formerly known as TECHNYL A 50H1 NATURAL. Domo has integrated it into the TECHNYL PROTECT flame retardant product line. The new designation PROTECT A 50H1 NC more clearly reflects the product’s flame retardant characteristics and technology platform. The material formulation and properties remain unchanged — customers can confidently transition to the new name.

🔧 Typical Applications

🔌 Connectors
Electrical/Electronic Connector Housings
⚡ Low Voltage Equipment
Circuit Breakers, Switches, Relay Bases
🏠 Household Appliances
Power Plugs, Internal Insulation Supports
🚆 Railway
EN 45545-2 Certified Applications