描述
VESTAMID LX9008 BK 9.7504 is a black, high-viscosity, plasticizer-free and impact-modified polyamide 12 compound from Evonik Operations GmbH developed for extrusion of tubing exposed to demanding thermal and fuel environments.
The defining characteristic of VESTAMID LX9008 BK 9.7504 is its exceptional long-term heat resistance. Evonik specifically positions the grade for flexible tubes that remain exposed to elevated temperatures for long periods, including line systems installed in the engine compartment of motor vehicles.
Diesel fuel lines are one of the most important applications. Evonik’s current diesel-line literature identifies VESTAMID LX9008 together with LX9013 as specialty PA12 grades developed for fuel return lines and fuel lines located close to engines in common-rail diesel vehicles.
These locations are challenging because return fuel can become hot during operation. Evonik reports that LX9008 and LX9013 provide superior aging resistance compared with standard polyamides at temperatures up to approximately 125°C continuously and 140°C peak in the intended common-rail diesel tubing context.
The current Material Data Center classifies VESTAMID LX9008 BK 9.7504 as PA12-I and identifies it as high impact / impact modified and heat stabilized. Historical Evonik portfolio documentation further describes LX9008 as PA12, HI, EHL, 22-010, high viscosity and highly heat stabilized, with hot diesel fuel lines as the principal application.
The grade is plasticizer-free, an important distinction from the related VESTAMID LX9013 BK 9.7507. This gives LX9008 a higher stiffness profile while still maintaining excellent impact behavior and useful tube flexibility.
Low moisture absorption is another advantage. Published water absorption is approximately 1.4%, while humidity absorption is approximately 0.7%. This helps dimensions and mechanical properties remain relatively stable when ambient humidity changes.
For additional engineering grades, visit our PA12 Polyamide 12 Product Category →.
For manufacturer application information, see the Official Evonik VESTAMID Diesel Lines Guide →.
Key Features of VESTAMID LX9008 BK 9.7504
| Feature | Benefit |
|---|---|
| High Viscosity | Provides melt strength for stable pipe and tube extrusion |
| Plasticizer-Free | Provides higher stiffness than plasticized hot-diesel PA12 grades |
| Impact Modified | Supports demanding tube systems exposed to vibration and mechanical shock |
| Extraordinary Long-Term Heat Resistance | Designed for prolonged elevated-temperature service |
| Common-Rail Diesel Line Capability | Developed for hot diesel fuel and fuel-return tubing |
| Heat Stabilized | Supports retention of properties under thermal aging |
| Fuel Resistance | Suitable for demanding diesel-fuel environments |
| Strong Low-Temperature Impact | Retains useful impact performance down to sub-zero temperatures |
| Low Moisture Absorption | Helps reduce humidity-driven dimensional changes |
| Dimensional Stability | Supports controlled tube dimensions over changing ambient conditions |
| Electrical Insulation | High dielectric strength and CTI 600 |
| Black Color | Ready-colored formulation for automotive line systems |
The combination of heat aging resistance and low-temperature toughness makes VESTAMID LX9008 BK 9.7504 especially suitable for line systems that must perform across a broad temperature range.
Typical Applications for VESTAMID LX9008 BK 9.7504
VESTAMID LX9008 BK 9.7504 is primarily intended for demanding extruded automotive tubing.
| Application Area | Typical Use |
|---|---|
| Hot Diesel Fuel Lines | Tubing exposed to high fuel temperatures |
| Diesel Fuel Return Lines | Return lines in common-rail diesel systems |
| Engine-Compartment Tubing | Tubes installed near hot engine components |
| Common-Rail Diesel Systems | Passenger-car, light commercial and heavy-duty vehicle tubing |
| Fuel-System Tubing | PA12-I lines requiring fuel resistance and long-term heat aging |
| Automotive Technical Tubing | High-performance tube systems requiring impact and dimensional stability |
| Profile Extrusion | Selected technical extrusion applications |
| Other Extruded PA12 Components | Applications requiring high-viscosity, heat-stable PA12-I |
Evonik notes that VESTAMID LX9008 and LX9013 have been used across diesel vehicle classes from passenger cars and light commercial vehicles to heavy-duty trucks.
Typical Properties of VESTAMID LX9008 BK 9.7504
Physical & Processing Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 1.01 g/cm³ | ISO 1183 |
| Water Absorption | 1.4% | Similar to ISO 62 |
| Humidity Absorption | 0.7% | Similar to ISO 62 |
| Molding Shrinkage – Parallel | 0.2% | ISO 294-4 / 2577 |
| Molding Shrinkage – Normal | 1.9% | ISO 294-4 / 2577 |
| Shore D Hardness | 73 | ISO 7619-1 |
The very low moisture uptake of VESTAMID LX9008 BK 9.7504 helps maintain tube geometry and mechanical behavior under changing environmental humidity.
Mechanical Properties
| Property | Typical Value (Dry / Conditioned) | Test Method |
|---|---|---|
| Tensile Modulus | 1,450 / 970 MPa | ISO 527 |
| Yield Stress | 41 / 39 MPa | ISO 527 |
| Yield Strain | 5 / 17% | ISO 527 |
| Nominal Strain at Break | >50 / >50% | ISO 527 |
| Charpy Impact Strength, 23°C | No Break / No Break | ISO 179/1eU |
| Charpy Impact Strength, -30°C | No Break / No Break | ISO 179/1eU |
| Charpy Notched Impact, 23°C | 40 / 90 kJ/m² | ISO 179/1eA |
| Charpy Notched Impact, -30°C | 22 / 22 kJ/m² | ISO 179/1eA |
| Flexural Modulus | Approx. 1,190 MPa dry | ISO 178 |
| Flexural Strength | Approx. 48 MPa dry | ISO 178 |
The notched impact data is one of the strongest features of VESTAMID LX9008 BK 9.7504, particularly for a plasticizer-free PA12 grade.
Thermal & Flammability Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Melting Temperature | 176°C | ISO 11357-1/-3 |
| Glass Transition Temperature | 47°C | ISO 11357-1/-2 |
| HDT @ 1.80 MPa | 48°C | ISO 75-1/-2 |
| HDT @ 0.45 MPa | 113°C | ISO 75-1/-2 |
| Vicat Softening Temperature B | 145°C | ISO 306 |
| CTE – Parallel | 90.5 × 10⁻⁶/K | ISO 11359-1/-2 |
| CTE – Normal | 120 × 10⁻⁶/K | ISO 11359-1/-2 |
| Flammability @ 1.5 mm nominal | HB | IEC 60695-11-10 |
| Tested Thickness | 1.6 mm | — |
The standardized HDT values should not be confused with the grade’s long-term thermal aging capability in diesel-line service. The latter is the main reason LX9008 was developed.
Electrical Properties
| Property | Typical Value (Dry / Conditioned) | Test Method |
|---|---|---|
| Relative Permittivity, 100 Hz | 3.7 / 4.7 | IEC 62631-2-1 |
| Relative Permittivity, 1 MHz | 2.9 / 3.1 | IEC 62631-2-1 |
| Dissipation Factor, 100 Hz | 520 / 1040 × 10⁻⁴ | IEC 62631-2-1 |
| Dissipation Factor, 1 MHz | 320 / 390 × 10⁻⁴ | IEC 62631-2-1 |
| Volume Resistivity | 1 × 10¹² / 2.3 × 10¹⁰ Ω·m | IEC 62631-3-1 |
| Electric Strength | 38 / 37 kV/mm | IEC 60243-1 |
| Comparative Tracking Index (CTI) | 600 | IEC 60112 |
These values confirm that VESTAMID LX9008 BK 9.7504 is electrically insulating.
Why Choose VESTAMID LX9008 BK 9.7504?
The main reason to choose VESTAMID LX9008 BK 9.7504 is its long-term resistance to hot diesel environments.
Common-rail diesel systems create much more demanding thermal conditions than older fuel systems. Diesel fuel in return lines can reach high temperatures, and the tubing must retain strength, elongation and low-temperature impact resistance after prolonged fuel exposure.
Evonik developed LX9008 specifically for this problem. Its current diesel-line literature describes LX9008 and LX9013 as specialty grades that provide superior aging resistance at approximately 125°C continuous and 140°C peak in these systems.
The grade also retains good low-temperature toughness. This is important because the same vehicle can experience hot engine-bay conditions during operation and very low ambient temperatures during winter.
Another important reason is that VESTAMID LX9008 BK 9.7504 is plasticizer-free. Compared with plasticized LX9013, LX9008 provides a stiffer tube while maintaining impact modification and flexibility appropriate for technical line systems.
Finally, the low water absorption of PA12 helps maintain dimensions and properties under humidity changes, while high viscosity supports stable extrusion of technical tubing.
Processing Guidelines for VESTAMID LX9008 BK 9.7504
VESTAMID LX9008 BK 9.7504 is intended primarily for pipe/tube extrusion, profile extrusion and other extrusion processes.
Current grade-specific data provides the following standardized specimen-production conditions:
| Processing Item | Published Condition |
|---|---|
| Primary Processing | Pipe / Tube Extrusion |
| Other Processing | Profile Extrusion, Other Extrusion |
| ISO Test Melt Temperature | 240°C |
| ISO Test Mold Temperature | 60°C |
| ISO Test Injection Velocity | 200 mm/s |
| Supply Form | Black pellets / granules |
| Shelf Life | At least 2 years in original undamaged packaging at ≤30°C |
The ISO molding conditions above are test-specimen conditions and should not be used as a fixed production recipe for fuel-line extrusion.
For extrusion, barrel and die temperatures, screw speed, line speed, vacuum calibration and cooling should be optimized for the specific tube diameter, wall thickness and extrusion line.
Evonik’s general VESTAMID processing guide states that intact moisture-proof bags normally do not require pre-drying. If packaging has been damaged or the material has been open for more than approximately two hours, drying is recommended until moisture is below 0.1%.
For unplasticized PA12, Evonik’s general drying recommendation is:
| Drying Item | Recommended Condition |
|---|---|
| Drying Temperature | 80–100°C |
| Dehumidified-Air Dryer | 2–4 hours |
| Target Moisture | <0.1% |
Because VESTAMID LX9008 BK 9.7504 is used in safety-relevant fuel-line systems, the actual tube design, extrusion process and fuel-system qualification should be validated against the required automotive standard and service conditions.
VESTAMID LX9008 BK 9.7504 vs. VESTAMID LX9013 BK 9.7507
| Feature | VESTAMID LX9008 BK 9.7504 | VESTAMID LX9013 BK 9.7507 |
|---|---|---|
| Material Family | PA12-I | PA12-I |
| Historical DIN-Type Description | PA12-HIHL | PA12-HIPHL |
| Plasticizer | Plasticizer-free | Plasticized |
| Viscosity | High | High |
| Tensile Modulus, Dry | Approx. 1,450 MPa | Approx. 410 MPa |
| 23°C Notched Impact, Dry | 40 kJ/m² | 130 kJ/m² |
| Main Application | Hot diesel / common-rail fuel lines | More flexible hot diesel / common-rail fuel lines |
| Relative Flexibility | Lower | Higher |
| Long-Term Heat Resistance | Excellent | Excellent |
| Main Selection Reason | Higher stiffness without plasticizer | Higher flexibility and smaller bend radius |
Both grades were developed by Evonik for common-rail diesel line systems and can handle demanding thermal aging.
Choose VESTAMID LX9008 BK 9.7504 when a plasticizer-free tube with higher stiffness is preferred.
Choose VESTAMID LX9013 BK 9.7507 when a substantially softer and more flexible plasticized PA12 tube is required.
Related Products
VESTAMID LX9013 BK 9.7507 – Plasticized high-viscosity PA12-I for flexible hot diesel fuel lines.
VESTAMID L2141 BK 9.7504 – High-viscosity PA12 with enhanced heat stabilization for hydraulic clutch and vacuum lines.
VESTAMID L2140 BK 9.7504 – High-viscosity PA12 for fuel lines and general technical tube extrusion.
View More PA12 Polyamide 12 Materials →
Technical Documents for VESTAMID LX9008 BK 9.7504
| Document Type | Description |
|---|---|
| TDS | Technical Data Sheet with mechanical, thermal, electrical and processing properties |
| SDS | Safety Data Sheet |
| COA | Batch-specific Certificate of Analysis where available |
| Diesel Line Guide | Evonik technical information for common-rail diesel tubing |
| Processing Guide | General VESTAMID PA12 drying and processing recommendations |
| Automotive Documentation | Relevant fuel-line and automotive qualification information subject to availability |
Need technical documents for VESTAMID LX9008 BK 9.7504?
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FAQ About VESTAMID LX9008 BK 9.7504
Q1: What is VESTAMID LX9008 BK 9.7504?
VESTAMID LX9008 BK 9.7504 is a black, high-viscosity, plasticizer-free and impact-modified PA12 from Evonik developed for tubing exposed to high temperatures, especially hot diesel fuel lines.
Q2: Is VESTAMID LX9008 BK 9.7504 suitable for common-rail diesel systems?
Yes. Evonik specifically developed LX9008 and LX9013 for fuel and return lines close to engines in common-rail diesel vehicles.
Q3: Is VESTAMID LX9008 BK 9.7504 plasticized?
No. It is a plasticizer-free PA12-I grade. This is one of the main differences from VESTAMID LX9013 BK 9.7507.
Q4: What is the density of VESTAMID LX9008 BK 9.7504?
The typical density is approximately 1.01 g/cm³ according to ISO 1183.
Q5: What is the tensile modulus of VESTAMID LX9008 BK 9.7504?
The typical tensile modulus is approximately 1,450 MPa dry and 970 MPa conditioned according to ISO 527.
Q6: What is the impact strength of VESTAMID LX9008 BK 9.7504?
Unnotched Charpy specimens show no break at both 23°C and -30°C. Typical notched impact strength is 40 kJ/m² dry at 23°C and 22 kJ/m² dry at -30°C.
Q7: What is the melting temperature of VESTAMID LX9008 BK 9.7504?
The typical melting temperature is approximately 176°C.
Q8: What temperatures can LX9008 diesel tubing handle?
Evonik’s current diesel-line guide states that the specialty LX9008/LX9013 grades are designed for aging resistance at approximately 125°C continuously and 140°C peak in common-rail diesel tubing applications.
Q9: What is the difference between LX9008 and LX9013?
LX9008 is plasticizer-free and significantly stiffer, while LX9013 is plasticized and much more flexible. Both are specialty hot-diesel PA12 grades.
Q10: Can you provide VESTAMID LX9008 BK 9.7504 TDS, SDS and COA?
Yes. Please request the required technical documents through our Contact Page → or email ruiqingchem@gmail.com.
Request VESTAMID LX9008 BK 9.7504 Price & Technical Support
For pricing, availability, technical documents or material-selection support for VESTAMID LX9008 BK 9.7504, please provide:
- Required quantity
- Destination country or port
- Diesel fuel-line or other tube application
- Tube outside diameter and wall thickness
- Continuous and peak operating temperature
- Fuel type and biodiesel content
- Operating pressure
- Required SAE, DIN or OEM standard
- Extrusion-line information
- Cold-impact requirement
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