描述
Fortron 6850L6 is a 50% mineral and glass fiber reinforced polyphenylene sulfide (PPS) injection molding grade from Celanese Corporation. This grade offers the lowest warpage available among Fortron grades and is the most isotropic grade in the product line .
The easy flowing nature allows Fortron 6850L6 to be injection molded into thin-walled applications, particularly those with unfavorable flow length-to-wall thickness ratios . The excellent balance of mineral and glass fibers results in superior heat resistance and dimensional stability .
As a linear, semi-crystalline PPS, Fortron 6850L6 is relatively impermeable to gases, hydrocarbons, and other liquids compared to other materials . It provides low coefficient of friction, low shrinkage, excellent mechanical properties, creep resistance at high temperatures, a high continuous use temperature (160°C to 240°C), and very low moisture absorption .
This grade is inherently flame-retardant along with high hardness and rigidity . It offers high hardness, rigidity, and excellent resistance to corrosion, hydrolysis, oxidation, and paraffin buildup . It shows excellent chemical resistance to all solvents below 200°C, acids, bases, typical and alternative automotive fuels, and petroleum fluids at elevated temperatures . The material complies with RoHS, PFOS and PFOA regulations and is suitable for lead-free soldering and metal replacement applications .
For more PPS grades and technical information, please visit our PPS/Polyphenylene Sulfide product page. You can also explore Celanese’s official Fortron PPS portfolio for additional manufacturer insights.
Key Features of Fortron 6850L6
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Lowest Warpage – Offers the lowest warpage among Fortron grades
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Most Isotropic Grade – The most isotropic grade in the Fortron series
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Easy Flow – Excellent flow for thin-walled applications with unfavorable flow length-to-wall thickness ratios
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50% Mineral/Glass Reinforcement – Excellent balance of mineral and glass fibers for superior heat resistance and dimensional stability
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High Stiffness – Tensile modulus of 18,500 MPa ; flexural modulus of 16,800 MPa
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High Strength – Tensile strength of 125 MPa
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Excellent Heat Resistance – HDT of 270°C at 1.80 MPa ; melting temperature of 280°C
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Inherent Flame Retardancy – V-0 at 0.38mm and 1.5mm thickness
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Excellent Dimensional Stability – Low shrinkage: 0.3-0.6% parallel, 0.4-0.6% transverse
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Very Low Moisture Absorption – 0.02% water absorption
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Excellent Chemical Resistance – Resists solvents, acids, bases, and automotive fuels below 200°C
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Automotive Approved – Meets CONTINENTAL TST N 055 58.12 specification
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Regulatory Compliance – RoHS, PFOS, and PFOA compliant
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Global Supply – Available across North America, Europe, Asia Pacific, Latin America, Africa & Middle East
Typical Applications for Fortron 6850L6
| Industry | Typical Components & Considerations |
|---|---|
| Thin-Wall Injection Molding | Components with unfavorable flow length-to-wall thickness ratios – utilizing easy flow and lowest warpage |
| Electronic Components | Connectors, sensors, coil bobbins, SMT components – requiring V-0 flammability, low warpage, and dimensional stability |
| Automotive | Under-the-hood components – meeting Continental specification |
| Lead-Free Soldering | Electronic components suitable for lead-free soldering processes |
| Metal Replacement | Applications requiring metal replacement with high-performance polymer |
Typical Properties of Fortron 6850L6
| Property | Value | Test Method |
|---|---|---|
| Physical | ||
| Density | 1.80 g/cm³ (1800 kg/m³) | ISO 1183 |
| Water Absorption (Saturation) | 0.02% | ISO 62 |
| Molding Shrinkage – Parallel | 0.3 – 0.6% | ISO 294-4 |
| Molding Shrinkage – Transverse | 0.4 – 0.6% | ISO 294-4 |
| Mechanical | ||
| Tensile Modulus | 18,500 MPa | ISO 527 |
| Tensile Strength at Break | 125 MPa | ISO 527 |
| Tensile Strain at Break | 1.0% | ISO 527 |
| Flexural Modulus | 16,800 MPa | ISO 178 |
| Flexural Strength | 190 MPa | ISO 178 |
| Impact | ||
| Charpy Notched Impact (23°C) | 4 kJ/m² | ISO 179/1eA |
| Charpy Unnotched Impact (23°C) | 16 kJ/m² | ISO 179/1eU |
| Hardness, Rockwell M | 96 | ISO 2039-2 / ASTM D785 |
| Thermal | ||
| Melting Temperature | 280°C | ISO 11357 |
| Glass Transition Temperature | 90°C | ISO 11357 |
| HDT @ 1.80 MPa | 270°C | ISO 75 |
| HDT @ 8.00 MPa | 215°C | ISO 75 |
| CTE – Parallel | 15 × 10⁻⁶/K | ISO 11359 |
| CTE – Transverse | 31 × 10⁻⁶/K | ISO 11359 |
| Electrical | ||
| Volume Resistivity | >1×10¹³ Ω·m | IEC 62631 |
| Surface Resistivity | >1×10¹⁵ Ω | IEC 62631 |
| Dielectric Strength | 25 kV/mm | IEC 60243 |
| Flammability | ||
| Flammability @ 0.38mm | V-0 | UL 94 |
| Flammability @ 1.5mm | V-0 | UL 94 |
Important Notes on Typical Data
📌 Values are typical – The data listed above is sourced from manufacturer data sheets for reference only and does not constitute binding product specifications for Fortron 6850L6.
📌 Batch variations – Batch-to-batch deviations may exist. For critical applications, validate performance with batch-specific COA certificates.
📌 Final performance – Actual performance depends on processing conditions and part design. Refer to ISO testing standards for detailed methodology.
📌 Authoritative reference – The manufacturer’s official TDS shall serve as the definitive technical reference for Fortron 6850L6. Request the latest official TDS from our sales team.
Processing Guidelines for Fortron 6850L6
| Step | Process |
|---|---|
| Processing Methods | Injection Molding |
| Drying Recommended | Yes |
| Drying Temperature | 130 – 140°C |
| Drying Time | 3 – 4 hours |
| Suggested Max Moisture | ≤ 0.02% |
| Dew Point Requirement | ≤ -30°C |
| Melt Temperature Range | 330 – 340°C |
| Manifold / Hot Runner Temperature | 330 – 340°C |
| Mold Temperature | 140 – 160°C |
| Zone 1 Temperature | 290 – 300°C |
| Zone 2 Temperature | 310 – 320°C |
| Zone 3 Temperature | 330 – 340°C |
| Zone 4 Temperature | 330 – 340°C |
| Injection Pressure | 50 – 100 MPa |
| Hold Pressure | 30 – 70 MPa |
| Back Pressure | ≤ 3 MPa |
| Screw Speed | 0.2 – 0.3 m/s |
| Storage | Store in original, sealed packaging in a cool, dry place away from direct sunlight |
Critical Processing Warnings for Fortron 6850L6
⚠️ Drying Requirement – Fortron 6850L6 requires drying prior to processing. Because of the necessary low maximum residual moisture content, the use of dry air dryers is recommended. The dew point should be ≤ -30°C. The time between drying and processing should be as short as possible .
⚠️ Moisture Control – Maximum residual moisture content should be ≤ 0.02%. Proper drying is essential to prevent void formation and ensure optimal part quality.
⚠️ Melt Temperature – The recommended melt temperature range is 330–340°C. Avoid exceeding 340°C to prevent material degradation.
⚠️ Lowest Warpage / Most Isotropic – Fortron 6850L6 offers the lowest warpage and is the most isotropic grade available, making it ideal for thin-walled applications with unfavorable flow length-to-wall thickness ratios . Ensure proper part design to maximize these characteristics.
⚠️ Easy Flow Characteristics – This grade features easy flow for thin-walled applications. Adjust processing parameters accordingly to optimize fill and reduce pressure requirements .
⚠️ Storage – Store in original, sealed packaging in a cool, dry place away from direct sunlight. For subsequent storage, the material should be stored dry until processed.
Comparison: Fortron 6850L6 vs. Fortron 4665B6 vs. Fortron 6165A4
| Feature | Fortron 6850L6 | Fortron 4665B6 | Fortron 6165A4 |
|---|---|---|---|
| Filler Content | 50% Mineral/Glass | 65% Mineral/Glass | 65% Mineral/Glass |
| Key Feature | Lowest warpage, Most isotropic, Easy flow | High CTI (250), Very low warpage | Highest stiffness, 5VA, Load bearing |
| Tensile Modulus | 18,500 MPa | 17,300 MPa | 19,000 MPa |
| Tensile Strength | 125 MPa | 110-125 MPa | 130 MPa |
| HDT @ 1.80 MPa | 270°C | 270°C | 270°C |
| Flame Retardancy | V-0 @ 0.38mm | V-0 | 5VA @ 3.0mm |
| Density | 1.80 g/cm³ | 2.03 g/cm³ | 1.95 g/cm³ |
| Primary Application | Thin-wall, lowest warpage applications | High-voltage electronics, low warpage | High-load structural components |
Related Products
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PPS/Polyphenylene Sulfide – View our full range of PPS products
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Fortron 4665B6 – 65% mineral/glass reinforced PPS with high CTI (250)
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Fortron 6165A4 – 65% mineral/glass reinforced PPS with highest stiffness and 5VA
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Fortron 6162A7 – 60% mineral/glass reinforced PPS with high flow and CTI 225V
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Explore Engineering Plastics – Browse all engineering plastic materials
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About Our Company – Learn more about our supply capabilities and quality assurance
Technical Documents for Fortron 6850L6
| Document Type | Description & Source |
|---|---|
| Manufacturer Official TDS | Complete physical, thermal, and mechanical properties of Fortron 6850L6 |
| Manufacturer Official SDS | GHS-compliant safety documentation |
| COA (Certificate of Analysis) | Batch-specific quality certification for Fortron 6850L6 |
| UL Yellow Card | UL safety certification (E107854) |
| Automotive Specification | CONTINENTAL TST N 055 58.12 |
Request any document above by:
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📝 Online form: Our contact page
We reply within one working business day. Please clearly state product (Fortron 6850L6) and document type you require.
FAQ about Fortron 6850L6
Q1: What is Fortron 6850L6?
A: Fortron 6850L6 is a 50% mineral and glass fiber reinforced PPS injection molding grade from Celanese, offering the lowest warpage and the most isotropic properties in the Fortron series .
Q2: What are the key features of Fortron 6850L6?
A: Lowest warpage among Fortron grades; most isotropic grade; easy flow for thin-wall applications; tensile modulus 18,500 MPa; tensile strength 125 MPa; HDT 270°C; V-0 at 0.38mm; excellent chemical resistance; meets Continental specification .
Q3: What are the typical applications for Fortron 6850L6?
A: Thin-wall injection molded components with unfavorable flow length-to-wall thickness ratios, electronic components, automotive under-the-hood parts, lead-free soldering applications, and metal replacement applications .
Q4: What is the recommended drying condition for Fortron 6850L6?
A: Dry using a dehumidified air dryer with dew point ≤ -30°C. The time between drying and processing should be as short as possible . Maximum residual moisture should be ≤ 0.02%.
Q5: What is the density of Fortron 6850L6?
A: 1.80 g/cm³ (1800 kg/m³) .
Q6: What is the HDT @ 1.80 MPa of Fortron 6850L6?
A: 270°C .
Q7: What regions is Fortron 6850L6 available in?
A: North America, Europe, Asia Pacific, Latin America, Africa & Middle East .
Q8: Is Fortron 6850L6 flame retardant?
A: Yes, V-0 at 0.38mm and 1.5mm thickness (UL 94) .
Q9: What automotive specifications does Fortron 6850L6 meet?
A: CONTINENTAL TST N 055 58.12 .
Q10: Is Fortron 6850L6 the most isotropic grade?
A: Yes, it is the most isotropic grade in the Fortron series .
Q11: Is Fortron 6850L6 RoHS compliant?
A: Yes, it complies with RoHS, PFOS, and PFOA regulations .
Q12: What does “most isotropic” mean?
A: “Most isotropic” means the material exhibits the most balanced properties in all directions, minimizing directional variations in shrinkage and mechanical properties, which contributes to the lowest warpage.
Q13: What color options are available for Fortron 6850L6?
A: Black (SD3002 BLACK) is available .
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Sample Policy:
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Samples of Fortron 6850L6 are for laboratory validation tests only, not for production use.
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Buyer bears international sample-shipping freight.
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If bulk-product performance deviates from sample reference, the manufacturer’s official TDS serves as the authoritative benchmark.
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After-Sales Support
| Service | Details |
|---|---|
| Quality Inspection Period | All quality-related claims must be submitted within 7 working days after delivery, supported by test data and photographic evidence. |
| Return / Exchange Policy | Confirmed product defects caused by our side trigger replacement or refund. Terms and conditions apply. |
| Logistics Damage | Report shipping damage directly to carrier immediately upon goods receipt. We assist with claim-document preparation. |
| Technical Support | Remote technical guidance available. On-site troubleshooting can be arranged upon special request. |
| Export Documentation | We supply commercial invoice, packing list, bill of lading, COA, and additional compliance certificates on request. |
Disclaimer
DISCLAIMER: All technical data is referenced from original manufacturer typical values for Fortron 6850L6. Our company acts as supplier/trader rather than original manufacturer. Final performance depends on processing conditions and part design. Buyers shall independently validate product suitability for individual applications. Our firm bears no liability for product failure caused by improper processing or improper usage. Always reference the latest manufacturer official TDS of Fortron 6850L6 as the definitive specification.
