描述
VESTAMID L2140 NC is a natural-color, high-viscosity, heat- and light-stabilized polyamide 12 compound manufactured by Evonik Operations GmbH. The grade is designed for extrusion of tubing such as fuel lines and for semi-finished products requiring toughness, dimensional stability and chemical resistance.
The high-viscosity profile is one of the defining characteristics of VESTAMID L2140 NC. In extrusion, higher melt strength helps the hot polymer maintain its geometry between the die and the calibration or cooling system. This makes the grade especially suitable for tube and profile applications where dimensional control is important.
Evonik specifies tubing made from VESTAMID L2140 NC according to DIN 73 378, Type PA 12-HL. This classification supports its use in demanding technical tubing systems, particularly where pressure resistance, dimensional stability and PA12 durability are required.
The PA12 matrix also provides relatively low moisture uptake. Published data lists water absorption of approximately 1.6% and humidity absorption of approximately 0.8%. Because of this low moisture sensitivity, dimensions and mechanical properties change less with humidity than many other polyamide materials.
Mechanical toughness is another important strength. Unnotched Charpy specimens are reported as no break at both 23°C and -30°C. The typical notched impact strength is approximately 35 kJ/m² dry at 23°C and 9 kJ/m² dry at -30°C, demonstrating useful toughness over a broad temperature range.
The grade also provides a low coefficient of friction and broad chemical resistance. Current material data includes resistance information for acids, bases, alcohols, hydrocarbons, motor oils, insulating oils, standard fuels, diesel and brake fluid.
VESTAMID L2140 NC is supplied in natural color and contains a lubricant additive. It is listed for injection molding, pipe/tube extrusion, profile extrusion and other extrusion processes, while its principal commercial positioning is high-viscosity PA12 extrusion.
Explore more grades in our PA12 Polyamide 12 Product Category →.
For manufacturer information about the VESTAMID PA12 portfolio, visit the Official Evonik VESTAMID Page →.
Key Features of VESTAMID L2140 NC
| Feature | Benefit |
|---|---|
| High Viscosity | Provides melt strength for stable pipe, tube and profile extrusion |
| Heat Stabilized | Supports demanding processing and service conditions |
| Light Stabilized | Helps maintain performance in light-exposed applications |
| High Impact Strength | Supports tubing and technical parts exposed to vibration and shock |
| Good Low-Temperature Toughness | Maintains useful impact performance at -30°C |
| Low Moisture Absorption | Helps reduce humidity-related dimensional changes |
| Low Coefficient of Friction | Supports tube 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 applications |
| Natural Color | Suitable where a non-black base material is preferred |
| Extrusion Grade | Suitable for pipe/tube, profile and semi-finished product extrusion |
The combination of high melt viscosity and low moisture absorption makes VESTAMID L2140 NC especially useful where stable extrusion dimensions are required.
Typical Applications for VESTAMID L2140 NC
VESTAMID L2140 NC is primarily intended for extrusion-focused engineering applications.
| Application Area | Typical Use |
|---|---|
| Fuel Lines | PA12 tubing requiring fuel and hydrocarbon resistance |
| Automotive Tubing | Technical lines requiring impact strength and dimensional stability |
| Compressed-Air Tubing | High-strength PA12-HL tubing |
| Industrial Tubing | Chemical-resistant pipe and tube systems |
| Profile Extrusion | Technical profiles requiring high melt strength |
| Semi-Finished Products | Extruded rods, profiles and other stock shapes |
| Mechanical Components | Parts benefiting from low friction and PA12 chemical resistance |
| Electrical Applications | Insulating technical components and extruded parts |
The L2140 family is particularly relevant where a rigid, high-strength PA12 tube is preferred over a more flexible plasticized PA12-P tube.
Typical Properties of VESTAMID L2140 NC
Physical & Rheological Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 1.01 g/cm³ | ISO 1183 |
| Water Absorption | 1.6% | Similar to ISO 62 |
| Humidity Absorption | 0.8% | Similar to ISO 62 |
| Shore D Hardness | 75 | ISO 7619-1 |
| Melt Volume-Flow Rate (MVR) | 3 cm³/10 min | ISO 1133 |
| MVR Test Condition | 220°C / 5 kg | — |
| Molding Shrinkage – Parallel | 0.7% | ISO 294-4 / 2577 |
| Molding Shrinkage – Normal | 1.2% | ISO 294-4 / 2577 |
| Melt Density | 860 kg/m³ | — |
| Specific Heat Capacity of Melt | 3000 J/(kg·K) | — |
The low MVR under 220°C / 5 kg conditions clearly reflects the high-viscosity character of VESTAMID L2140 NC.
Mechanical Properties
| Property | Typical Value (Dry / Conditioned) | Test Method |
|---|---|---|
| Tensile Modulus | 1,500 / 1,200 MPa | ISO 527 |
| Yield Stress | 44 / 38 MPa | ISO 527 |
| Yield Strain | 4 / 11% | 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 | 35 / 55 kJ/m² | ISO 179/1eA |
| Charpy Notched Impact, -30°C | 9 / 10 kJ/m² | ISO 179/1eA |
These values show that VESTAMID L2140 NC combines useful stiffness with strong impact behavior, including at low temperatures.
Thermal & Flammability Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Melting Temperature | 178°C | ISO 11357-1/-3 |
| Glass Transition Temperature | 45°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 @ 1.5 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 / 5.0 | IEC 62631-2-1 |
| Relative Permittivity, 1 MHz | 3.0 / 3.4 | IEC 62631-2-1 |
| Dissipation Factor, 100 Hz | 450 / 800 × 10⁻⁴ | IEC 62631-2-1 |
| Dissipation Factor, 1 MHz | 260 / 500 × 10⁻⁴ | IEC 62631-2-1 |
| Electric Strength | — / 28 kV/mm | IEC 60243-1 |
| Comparative Tracking Index (CTI) | 600 / 600 | IEC 60112 |
These values confirm that VESTAMID L2140 NC is an electrically insulating PA12 rather than an antistatic or conductive grade.
Why Choose VESTAMID L2140 NC?
The main reason to choose VESTAMID L2140 NC is its high-viscosity extrusion behavior combined with the durability of PA12.
Tube extrusion requires the polymer melt to retain geometry before it is fully cooled. A grade with insufficient melt strength may sag or produce unstable dimensions. The low MVR of L2140 reflects the high melt viscosity needed for more stable tube and profile extrusion.
The PA12 base also offers low moisture absorption. This reduces dimensional and mechanical variation in humid environments compared with more moisture-sensitive polyamides.
Impact strength is another major advantage. The grade remains highly resistant to impact in unnotched Charpy testing at both room temperature and -30°C, which is valuable for automotive and industrial tubing.
The material also provides broad chemical resistance to fuels, diesel, motor oil, alcohols, hydrocarbons and multiple aqueous chemical solutions.
Finally, the natural-color form gives processors more flexibility where a black pre-colored resin is not required.
Processing Guidelines for VESTAMID L2140 NC
VESTAMID L2140 NC is suitable for pipe/tube extrusion, profile extrusion, other extrusion methods and injection molding.
The current product datasheet gives the following ISO test-specimen 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 |
| Supply Condition | Dry pellets in moisture-proof packaging |
The ISO test conditions above should not automatically be copied as the final production extrusion profile. Tube extrusion temperatures should be optimized according to extruder size, output, die design, tube diameter, wall thickness and cooling system.
VESTAMID compounds are supplied in moisture-proof packaging. Material from intact original bags is generally ready for processing. If the pellets have been exposed to ambient air and absorbed moisture, drying should follow Evonik’s general VESTAMID processing guidance.
For precision tubing, die centering, vacuum calibration, haul-off speed and cooling conditions should be controlled together to maintain wall thickness and outside diameter.
The published shelf life is at least two years when material is stored in original, undamaged packaging in dry rooms at temperatures not exceeding 30°C.
VESTAMID L2140 NC vs. VESTAMID L2124 NC
| Feature | VESTAMID L2140 NC | VESTAMID L2124 NC |
|---|---|---|
| Base Polymer | PA12 | Plasticized PA12-P |
| Viscosity | High | High |
| Tensile Modulus, Dry | Approx. 1,500 MPa | Approx. 400 MPa |
| Flexibility | More rigid | Much more flexible |
| DIN 73 378 Type | PA 12-HL | PA 12-PHL |
| Primary Application | High-strength fuel / compressed-air tubing | Flexible oil, fuel and petrochemical tubing |
| Main Advantage | Higher rigidity and pressure resistance | Smaller bend radius and greater flexibility |
Choose VESTAMID L2140 NC when a rigid, high-strength PA12-HL tube with good pressure resistance is required.
Choose VESTAMID L2124 NC when greater flexibility and a smaller bending radius are more important for the fluid-line design.
Related Products
VESTAMID L2140 BK 9.7504 – Black high-viscosity PA12 for fuel-line, tube and extrusion applications.
VESTAMID L2124 NC – Plasticized high-viscosity PA12-P for flexible oil and petrochemical tubing.
VESTAMID L1940 NC – Medium-viscosity PA12 for injection molding and broader extrusion applications.
View More PA12 Polyamide 12 Materials →
Technical Documents for VESTAMID L2140 NC
| 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 NC
Q1: What is VESTAMID L2140 NC?
VESTAMID L2140 NC is a natural-color, high-viscosity, heat- and light-stabilized PA12 from Evonik for tubing such as fuel lines and for semi-finished products.
Q2: Is VESTAMID L2140 NC suitable for fuel lines?
Yes. Evonik specifically lists tubing such as fuel lines as an intended application and identifies the grade according to DIN 73 378 Type PA 12-HL.
Q3: Is VESTAMID L2140 NC plasticized?
No. It is an unplasticized PA12 grade. For a more flexible plasticized PA12-P tube, a grade such as VESTAMID L2124 NC may be more appropriate.
Q4: What is the density of VESTAMID L2140 NC?
The typical density is approximately 1.01 g/cm³ according to ISO 1183.
Q5: What is the MVR of VESTAMID L2140 NC?
The typical melt volume-flow rate is approximately 3 cm³/10 min at 220°C / 5 kg, confirming its high-viscosity character.
Q6: What is the tensile modulus of VESTAMID L2140 NC?
The typical tensile modulus is approximately 1,500 MPa dry and 1,200 MPa conditioned according to ISO 527.
Q7: What is the melting temperature of VESTAMID L2140 NC?
The typical melting temperature is approximately 178°C.
Q8: How good is the low-temperature impact resistance?
Unnotched specimens are reported as no break at -30°C, while typical notched impact strength is approximately 9 kJ/m² dry and 10 kJ/m² conditioned at -30°C.
Q9: Is VESTAMID L2140 NC electrically insulating?
Yes. Typical dry volume resistivity is approximately 1 × 10¹³ Ω·m, and CTI is 600.
Q10: Can you provide VESTAMID L2140 NC TDS, SDS and COA?
Yes. Please request the required documents through our Contact Page → or email ruiqingchem@gmail.com.
Request VESTAMID L2140 NC Price & Technical Support
For pricing, availability, technical documents or grade-selection support for VESTAMID L2140 NC, please provide:
- Required quantity
- Destination country or port
- Tube, profile or semi-finished-product application
- Tube outside diameter and wall thickness where applicable
- Fluid or chemical medium
- Operating temperature and pressure
- Required DIN or automotive standard
- Extrusion-line information
- Color requirement
- TDS, SDS, COA or UL document requirements
- Sample requirement, if applicable
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