描述
VESTAMID L2140 BK 9.7504 is a black, high-viscosity, heat- and light-stabilized polyamide 12 compound manufactured by Evonik Operations GmbH. It is designed primarily for extrusion of tubing, including fuel lines, as well as semi-finished products and selected cable-sheathing applications.
The high-viscosity profile is a key characteristic of VESTAMID L2140 BK 9.7504. During extrusion, higher melt strength helps the material maintain tube, profile or sheath geometry after leaving the die and before final cooling. This makes the grade especially relevant for applications where dimensional control and extrusion stability are important.
Evonik identifies tubing made from this grade as suitable for DIN 73 378, Type PA 12-HL. This classification reinforces its positioning as a technical PA12 material for demanding tube systems, particularly in automotive and industrial applications.
The PA12 matrix also provides very low moisture absorption compared with many conventional polyamides. Published water absorption is approximately 1.5%, while humidity absorption is approximately 0.7%. Because of this low moisture uptake, components made from VESTAMID L2140 BK 9.7504 show relatively small dimensional and mechanical changes when environmental humidity varies.
Mechanical toughness is another important advantage. Unnotched Charpy specimens are reported as no break at both 23°C and -30°C, while notched impact strength remains useful at low temperatures.
The material also offers a low coefficient of friction and broad chemical resistance. Current data includes resistance information for acids, bases, alcohols, hydrocarbons, motor oils, insulating oils, standard fuels and diesel.
In addition to tube extrusion, the L2140 family has historically been used for cable sheathing, especially where weather resistance, abrasion resistance and chemical resistance are important.
Explore more grades in our PA12 Polyamide 12 Product Category →.
For manufacturer information about VESTAMID PA12 materials, visit the Official Evonik VESTAMID Page →.
Key Features of VESTAMID L2140 BK 9.7504
| Feature | Benefit |
|---|---|
| High Viscosity | Provides melt strength for stable tubing, profile and sheath extrusion |
| Heat Stabilized | Supports demanding processing and service conditions |
| Light / UV Stabilized | Suitable for applications exposed to light and weather |
| High Impact Strength | Helps parts withstand handling, vibration and mechanical shock |
| Good Low-Temperature Toughness | Retains useful impact performance at -30°C |
| Low Moisture Absorption | Helps maintain dimensions and mechanical behavior with changing humidity |
| Low Coefficient of Friction | Supports sliding, cable-handling and tribological applications |
| Good Chemical Resistance | Useful in environments involving oils, fuels and industrial chemicals |
| Fuel Resistance | Suitable for fuel-line and automotive fluid-system applications |
| Electrical Insulation | High volume resistivity supports electrical and cable applications |
| Black Color | Supplied as a ready-colored black PA12 compound |
| Extrusion Grade | Suitable for pipe/tube, profile and cable-sheathing applications |
The combination of high melt viscosity and broad PA12 durability makes VESTAMID L2140 BK 9.7504 more suitable for dimensionally demanding extrusion than lower-viscosity grades such as L1670.
Typical Applications for VESTAMID L2140 BK 9.7504
VESTAMID L2140 BK 9.7504 is intended for extrusion-focused engineering applications.
| Application Area | Typical Use |
|---|---|
| Fuel Lines | PA12 tubing requiring fuel and hydrocarbon resistance |
| Automotive Tubing | Semi-rigid technical lines requiring impact strength and dimensional stability |
| Cable Sheathing | Protective outer sheaths for demanding cable systems |
| Underground Cable Protection | Weather- and abrasion-resistant protective cable cladding |
| Profile Extrusion | Technical profiles requiring high melt strength |
| Semi-Finished Products | Extruded rods, profiles or other stock shapes |
| Industrial Tubing | Chemical-resistant pipe and tube systems |
| Electrical Applications | Insulating components and protective sheathing |
Evonik product literature has identified VESTAMID L2140 black as a high-viscosity, heat- and light-stabilized compound for cable sheathing, while current product data emphasizes tubing such as fuel lines and semi-finished products.
Typical Properties of VESTAMID L2140 BK 9.7504
Physical & Rheological Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 1.01 g/cm³ | ISO 1183 |
| Water Absorption | 1.5% | Similar to ISO 62 |
| Humidity Absorption | 0.7% | Similar to ISO 62 |
| Melt Volume-Flow Rate (MVR) | 6 cm³/10 min | ISO 1133 |
| MVR Test Condition | 230°C / 5 kg | — |
| Molding Shrinkage – Parallel | 0.6% | ISO 294-4 / 2577 |
| Molding Shrinkage – Normal | 1.3% | ISO 294-4 / 2577 |
| Melt Density | 860 kg/m³ | — |
| Ejection Temperature | 170°C | — |
The low MVR under 230°C / 5 kg conditions is consistent with the high-viscosity positioning of VESTAMID L2140 BK 9.7504.
Mechanical Properties
| Property | Typical Value (Dry / Conditioned) | Test Method |
|---|---|---|
| Tensile Modulus | 1,550 / 1,300 MPa | ISO 527 |
| Yield Stress | 45 / 41 MPa | ISO 527 |
| Yield Strain | 4 / 13% | 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 | 16 / 12 kJ/m² | ISO 179/1eA |
| Charpy Notched Impact, -30°C | 9 / 10 kJ/m² | ISO 179/1eA |
These values show that VESTAMID L2140 BK 9.7504 combines relatively high stiffness for an unfilled PA12 with useful impact resistance at both room and sub-zero temperatures.
Thermal & Flammability Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Melting Temperature | 176°C | ISO 11357-1/-3 |
| Glass Transition Temperature | 40°C | ISO 11357-1/-2 |
| HDT @ 1.80 MPa | 50°C | ISO 75-1/-2 |
| HDT @ 0.45 MPa | 110°C | ISO 75-1/-2 |
| Vicat Softening Temperature B | 140°C | ISO 306 |
| CTE – Parallel | 140 × 10⁻⁶/K | ISO 11359-1/-2 |
| CTE – Normal | 140 × 10⁻⁶/K | ISO 11359-1/-2 |
| Flammability @ 1.6 mm | HB | IEC 60695-11-10 |
| UL Yellow Card | Available | — |
Electrical Properties
| Property | Typical Value (Dry / Conditioned) | Test Method |
|---|---|---|
| Volume Resistivity | 1 × 10¹³ / 3 × 10¹² Ω·m | IEC 62631-3-1 |
| Surface Resistivity | — / 1 × 10¹⁵ Ω | IEC 62631-3-2 |
| Relative Permittivity, 100 Hz | 3.7 / 4.8 | IEC 62631-2-1 |
| Relative Permittivity, 1 MHz | 3.0 / 3.3 | IEC 62631-2-1 |
| Dissipation Factor, 100 Hz | 450 / 700 × 10⁻⁴ | IEC 62631-2-1 |
| Dissipation Factor, 1 MHz | 260 / 500 × 10⁻⁴ | IEC 62631-2-1 |
| Electric Strength | 26 / 36 kV/mm | IEC 60243-1 |
| Comparative Tracking Index (CTI) | 600 conditioned | IEC 60112 |
These electrical values confirm that VESTAMID L2140 BK 9.7504 is an electrically insulating PA12 grade and can support cable and electrical applications.
Why Choose VESTAMID L2140 BK 9.7504?
The primary reason to choose VESTAMID L2140 BK 9.7504 is its high-viscosity extrusion performance.
Tube and cable-sheath extrusion require sufficient melt strength. If the polymer is too fluid, the extrudate can sag or lose dimensional accuracy before cooling. The relatively low MVR of L2140 reflects the high-viscosity character that helps support stable tube and profile geometry.
The material also combines this extrusion stability with the well-known advantages of PA12. Low moisture absorption helps reduce dimensional changes caused by humidity, while broad chemical resistance supports applications involving fuels, oils and industrial fluids.
Impact strength is another benefit. The material shows no break in unnotched Charpy tests at both 23°C and -30°C, which supports demanding automotive and outdoor applications.
For cable systems, low friction, weather resistance and chemical resistance are useful for protective sheathing. For tubing, the same characteristics help provide durable performance in fuel and industrial fluid systems.
Processing Guidelines for VESTAMID L2140 BK 9.7504
VESTAMID L2140 BK 9.7504 can be processed by pipe/tube extrusion, profile extrusion, other extrusion methods and injection molding.
The current product data provides the following standardized injection-molding conditions:
| Processing Item | Published Condition |
|---|---|
| Primary Processing | Pipe / Tube Extrusion, Profile Extrusion, Other Extrusion |
| Additional Processing | Injection Molding |
| ISO Test Melt Temperature | 240°C |
| ISO Test Mold Temperature | 60°C |
| ISO Test Injection Velocity | 200 mm/s |
| ISO Test Holding Pressure | 70 MPa |
| Ejection Temperature | Approx. 170°C |
| Supply Condition | Dry pellets in moisture-proof packaging |
The ISO molding conditions above are test-specimen conditions and should not automatically be used as the final extrusion profile.
For tubing and cable extrusion, barrel temperature, die temperature, line speed, calibration and cooling conditions should be optimized according to the product dimensions and equipment design.
Evonik supplies VESTAMID compounds in moisture-protective packaging. Material from intact packaging can normally be processed directly. If pellets absorb moisture after prolonged exposure to air, drying should follow Evonik’s general VESTAMID processing recommendations.
Inside the original and undamaged packaging, the published shelf life is at least two years when stored dry at temperatures not exceeding 30°C.
VESTAMID L2140 BK 9.7504 vs. VESTAMID L1940 BK 9.7504
| Feature | VESTAMID L2140 BK 9.7504 | VESTAMID L1940 BK 9.7504 |
|---|---|---|
| Base Polymer | PA12 | PA12 |
| Viscosity | High | Medium |
| MVR | Approx. 6 cm³/10 min @ 230°C / 5 kg | Higher-flow medium-viscosity grade |
| Primary Application | Fuel-line tubing, cable sheathing, semi-finished products | Cable, fiber-optic and general extrusion / molding |
| Extrusion Melt Strength | Higher | Medium |
| Injection Molding | Possible | More broadly suitable |
| Main Selection Reason | High-viscosity dimensional control | Broader processing versatility |
Choose VESTAMID L2140 BK 9.7504 when high melt strength and extrusion dimensional control are the main priorities.
Choose VESTAMID L1940 BK 9.7504 when a medium-viscosity grade with broader injection-molding and extrusion flexibility is preferred.
Related Products
VESTAMID L1940 BK 9.7504 – Medium-viscosity PA12 for injection molding, cable and extrusion applications.
VESTAMID L2140 NC – Natural-color high-viscosity PA12 for tubing and semi-finished products.
VESTAMID L2124 BK 9.7507 – Plasticized high-viscosity PA12-P for flexible oil and petrochemical tubing.
View More PA12 Polyamide 12 Materials →
Technical Documents for VESTAMID L2140 BK 9.7504
| Document Type | Description |
|---|---|
| TDS | Technical Data Sheet with physical, mechanical, thermal, electrical and processing properties |
| SDS | Safety Data Sheet |
| COA | Batch-specific Certificate of Analysis where available |
| Chemical Resistance Data | Resistance information for fuels, oils, alcohols, hydrocarbons and other media |
| UL Information | Relevant UL Yellow Card / flammability information |
| Compliance Documents | Relevant automotive and regulatory documents subject to availability |
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FAQ About VESTAMID L2140 BK 9.7504
Q1: What is VESTAMID L2140 BK 9.7504?
VESTAMID L2140 BK 9.7504 is a black, high-viscosity, heat- and light-stabilized PA12 compound from Evonik for tubing, fuel lines, semi-finished products and selected cable-sheathing applications.
Q2: What are the main applications of VESTAMID L2140 BK 9.7504?
Typical applications include fuel-line tubing, automotive tubes, cable sheathing, underground cable protection, profile extrusion and semi-finished PA12 products.
Q3: Is VESTAMID L2140 BK 9.7504 a high-viscosity PA12?
Yes. The grade is specifically described as high viscosity, and its MVR is approximately 6 cm³/10 min at 230°C / 5 kg.
Q4: What is the density of VESTAMID L2140 BK 9.7504?
The typical density is approximately 1.01 g/cm³ according to ISO 1183.
Q5: What is the tensile modulus of VESTAMID L2140 BK 9.7504?
The typical tensile modulus is approximately 1,550 MPa dry and 1,300 MPa conditioned according to ISO 527.
Q6: What is the melting temperature of VESTAMID L2140 BK 9.7504?
The typical melting temperature is approximately 176°C.
Q7: What is the low-temperature impact performance?
The unnotched Charpy result is reported as no break at -30°C, while the typical notched impact strength is approximately 9 kJ/m² dry and 10 kJ/m² conditioned at -30°C.
Q8: Is VESTAMID L2140 BK 9.7504 suitable for fuel lines?
Yes. Evonik specifically identifies tubing such as fuel lines among the intended applications of the grade.
Q9: Is VESTAMID L2140 BK 9.7504 electrically insulating?
Yes. Typical dry volume resistivity is approximately 1 × 10¹³ Ω·m, confirming that it is an electrically insulating PA12.
Q10: Can you provide VESTAMID L2140 BK 9.7504 TDS, SDS and COA?
Yes. Please request the required documents through our Contact Page → or email ruiqingchem@gmail.com.
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