描述
Zytel XT70G35HSL BK044A is a 35% glass fiber reinforced, heat stabilized polyamide 66 (PA66) resin supplied by Celanese Corporation. This grade has been developed for automotive applications requiring good retention of properties over time at temperatures up to 220°C, with excellent high-temperature fatigue resistance . The material meets BMW GS 93016-PA66-GF35, Mercedes-Benz DBL5408.50 PA66 GF35, and General Motors GMW17061P-PA-GF35-T2 specifications, among other OEM standards .
The Zytel XT70G35HSL BK044A resin delivers a tensile modulus of 11,000 MPa (dry) and tensile stress at break of 200 MPa (dry), making it an excellent choice for metal replacement and structural components in demanding environments . The “HSL” designation indicates heat stabilization, providing enhanced thermal performance for under-hood automotive applications and other high-temperature environments.
Zytel XT70G35HSL BK044A Key Features
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35% Glass Fiber Reinforcement: Delivers exceptional rigidity and strength with tensile modulus of 11,000 MPa
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Heat Stabilized: Formulated for good retention of properties at temperatures up to 220°C; heat deflection temperature (HDT) of 240°C at 1.80 MPa
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High Temperature Fatigue Resistance: Developed for demanding applications requiring long-term cyclic loading resistance
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Chemical Resistance: Good resistance to various media including oils, fuels, acids, and bases
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Excellent Dimensional Stability: Low molding shrinkage (0.3% parallel, 0.9% normal)
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Good Melt Stability: Enables recycling of properly handled production waste
Zytel XT70G35HSL BK044A Applications
Automotive Industry: Engine peripheral components, sensor housings, intake manifolds, fuel system elements, chassis brackets, structural connectors, and parts requiring long-term heat aging resistance up to 220°C. The material meets multiple OEM specifications including BMW GS 93016-PA66-GF35, Mercedes-Benz DBL5408.50, and VW 50133 PA66-7-A .
Industrial Equipment: High-performance structural components requiring rigidity and thermal stability.
Electronics: High-reliability housings and connectors requiring dimensional stability and heat resistance.
Zytel XT70G35HSL BK044A Technical Specifications
| Property | Test Condition | Standard | Dry | Unit |
|---|---|---|---|---|
| Density | — | ISO 1183 | 1.41 | g/cm³ |
| Molding Shrinkage (Flow) | 2.0mm | ISO 294-4 | 0.3 | % |
| Molding Shrinkage (Transverse) | 2.0mm | ISO 294-4 | 0.9 | % |
| Humidity Absorption | 2mm | Sim. to ISO 62 | 2.1 | % |
| Tensile Modulus | 23°C | ISO 527-1/-2 | 11,000 | MPa |
| Tensile Stress at Break | 23°C | ISO 527-2/5 | 200 | MPa |
| Tensile Strain at Break | 23°C | ISO 527-2/5 | 3.2 | % |
| Flexural Modulus | 23°C | ISO 178 | 10,000 | MPa |
| Flexural Strength | 23°C | ISO 178 | 260 | MPa |
| Charpy Notched Impact | 23°C | ISO 179/1eA | 13-15 | kJ/m² |
| Charpy Notched Impact | -30°C | ISO 179/1eA | 10 | kJ/m² |
| Charpy Unnotched Impact | 23°C | ISO 179/1eU | 90-100 | kJ/m² |
| HDT (1.80 MPa) | Unannealed | ISO 75-1/-2 | 240 | °C |
| Melting Temperature | 10°C/min | ISO 11357-3 | 258 | °C |
| Glass Transition Temp | 10°C/min | ISO 11357-2 | 65 | °C |
| CLTE (Flow) | -40-23°C | ISO 11359-2 | 1.9×10⁻⁵ | cm/cm/°C |
| CLTE (Transverse) | -40-23°C | ISO 11359-2 | 5.5×10⁻⁵ | cm/cm/°C |
| Dielectric Strength | — | IEC 60243-1 | 35 | kV/mm |
| Volume Resistivity | — | IEC 60093 | 1×10¹³ | Ω·cm |
| UL Flammability | 0.71-3.00mm | UL-94 | HB |
Processing Guide
| Parameter | Recommended Value |
|---|---|
| Drying Recommended | Yes |
| Drying Temperature | 80°C |
| Drying Time (Dehumidified Dryer) | 2 – 4 hours |
| Suggested Max Moisture | ≤ 0.2% |
| Melt Temperature Optimum | 285-290°C |
| Melt Temperature Range | 275 – 300°C |
| Mold Temperature Optimum | 95-100°C |
| Mold Temperature Range | 70 – 120°C |
| Ejection Temperature | 200-211°C |
Zytel XT70G35HSL BK044A FAQ
Q: What is Zytel XT70G35HSL BK044A?
A: It is a 35% glass fiber reinforced, heat stabilized PA66 resin from Celanese for injection molding applications requiring good retention of properties at temperatures up to 220°C .
Q: What is the tensile modulus of Zytel XT70G35HSL BK044A?
A: It offers tensile modulus of 11,000 MPa (dry) .
Q: What does “HSL” stand for in this grade?
A: HSL stands for Heat Stabilized, indicating the material is formulated for enhanced thermal performance and long-term heat aging resistance.
Q: What automotive specifications does this material meet?
A: It meets BMW GS 93016-PA66-GF35, Mercedes-Benz DBL5408.50 PA66 GF35, General Motors GMW17061P-PA-GF35-T2, and VW 50133 PA66-7-A, among others .
Q: What are the recommended processing conditions?
A: Melt temperature 275-300°C (optimum 285-290°C), mold temperature 70-120°C (optimum 95-100°C), with material dried to below 0.2% moisture content prior to processing .
Q: What applications is this material suitable for?
A: It is widely used in automotive engine components, sensor housings, intake manifolds, and structural parts requiring high-temperature performance up to 220°C
