描述
VESTAMID L2121 NC is a high-viscosity, plasticized polyamide 12 resin manufactured by Evonik Operations GmbH. The grade is specifically developed for extrusion of semi-rigid tubes and is widely suited to automotive piping and hose applications that require flexibility, toughness, dimensional stability and chemical resistance.
The material is identified as PA12-P, EHL, 22-007 according to ISO 1874. Its high-viscosity formulation provides the melt strength needed for stable tube and profile extrusion, while the plasticized PA12 matrix gives the finished product greater flexibility than rigid unplasticized PA12 grades.
A major advantage of VESTAMID L2121 NC is its low moisture absorption. Published data lists humidity absorption of only about 0.6%, helping tubes and molded components maintain dimensions and mechanical behavior under changing environmental humidity.
The grade also provides very strong impact performance. At 23°C and -30°C, unnotched Charpy specimens are reported as no break, while notched impact strength reaches approximately 40 kJ/m² at 23°C and 7 kJ/m² at -30°C. This combination is particularly useful for automotive fluid lines and industrial tubing that may experience vibration, bending or impact.
Chemical resistance is another important strength. Current Evonik product data includes resistance information for fuels, diesel, motor oil, brake fluid, alcohols, hydrocarbons, sodium hydroxide solutions and other industrial media. These characteristics make VESTAMID L2121 NC particularly relevant to fuel, vacuum, hydraulic and automotive pipe systems.
The grade is natural in color and contains a lubricant / processing aid. Current product information lists both injection molding and extrusion as possible processing methods, while its primary positioning remains profile extrusion and pipe/tube extrusion.
Explore additional grades in our PA12 Polyamide 12 Product Category →.
For manufacturer information about the VESTAMID PA12 family, visit the Official Evonik VESTAMID Page →.
Key Features of VESTAMID L2121 NC
| Feature | Benefit |
|---|---|
| High Viscosity | Provides melt strength for stable tube, pipe and profile extrusion |
| Plasticized PA12-P | Offers greater flexibility than rigid unplasticized PA12 |
| High Impact Strength | Supports demanding automotive and industrial tubing applications |
| Good Low-Temperature Toughness | Retains useful impact behavior at -30°C |
| Low Moisture Absorption | Helps maintain dimensional stability under changing humidity |
| Heat Resistant | Suitable for demanding automotive and industrial environments |
| Light & UV Stabilized | Supports applications exposed to light and outdoor conditions |
| Fuel & Oil Resistance | Suitable for fuel, vacuum, hydraulic and related fluid-line applications |
| Chemical Resistance | Resists many alcohols, hydrocarbons, oils and industrial chemicals |
| Processing Aid / Lubricant | Supports stable extrusion and processing |
| Natural Color | Suitable where a non-black base resin is required |
| Pipe & Tube Extrusion Grade | Specifically positioned for semi-rigid automotive tubing |
The combination of high viscosity, plasticization and fuel resistance makes VESTAMID L2121 NC a more application-specific tubing grade than general-purpose PA12.
Typical Applications for VESTAMID L2121 NC
VESTAMID L2121 NC is primarily used for semi-rigid extruded tubes, pipes and hose systems.
| Application Area | Typical Use |
|---|---|
| Automotive Fluid Lines | Semi-rigid tubing for fluid transfer systems |
| Fuel Lines | PA12 tubing requiring fuel and hydrocarbon resistance |
| Vacuum Lines | Flexible and dimensionally stable vacuum tubing |
| Hydraulic Lines | Plasticized PA12 tubing for hydraulic and clutch-related applications |
| Automotive Pipes | General-purpose automotive pipe systems |
| Steel Cable Sheathing | Protective PA12 jacketing around steel cables |
| Industrial Tubing | Chemical-resistant semi-rigid tubes and hoses |
| Profile Extrusion | Flexible technical profiles requiring high melt strength |
Historic and current VESTAMID literature positions L2121 for fuel, vacuum and hydraulic lines as well as steel cable sheathing, while the latest product information describes it as a high-viscosity plasticized PA12 for extrusion of semi-rigid tubes and automotive pipes.
Typical Properties of VESTAMID L2121 NC
Physical & Rheological Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 1.02 g/cm³ | ISO 1183 |
| Humidity Absorption | 0.6% | Similar to ISO 62 |
| Molding Shrinkage – Parallel | 0.6% | ISO 294-4 / 2577 |
| Molding Shrinkage – Normal | 1.6% | ISO 294-4 / 2577 |
| Resin Identification | PA12-P, EHL, 22-007 | ISO 1874 |
| Delivery Form | Pellets / Granules | — |
The combination of low humidity uptake and PA12 chemistry helps VESTAMID L2121 NC retain stable dimensions in automotive and industrial service.
Mechanical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Tensile Modulus | 700 MPa | ISO 527 |
| Yield Stress | 35 MPa | ISO 527 |
| Yield Strain | 20% | ISO 527 |
| Stress at 50% Strain | 34 MPa | ISO 527 |
| Nominal Strain at Break | >50% | ISO 527 |
| Charpy Impact Strength, 23°C | No Break | ISO 179/1eU |
| Charpy Impact Strength, -30°C | No Break | ISO 179/1eU |
| Charpy Notched Impact, 23°C | 40 kJ/m² | ISO 179/1eA |
| Charpy Notched Impact, -30°C | 7 kJ/m² | ISO 179/1eA |
The 700 MPa tensile modulus shows the flexible, plasticized nature of VESTAMID L2121 NC, while the high impact values support its use in hose and tubing systems.
Thermal Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Melting Temperature | 176°C | ISO 11357-1/-3 |
| HDT @ 1.80 MPa | 45°C | ISO 75-1/-2 |
| HDT @ 0.45 MPa | 110°C | ISO 75-1/-2 |
| Vicat Softening Temperature A | 170°C | ISO 306 |
| Vicat Softening Temperature B | 130°C | ISO 306 |
| CTE – Parallel | 160 × 10⁻⁶/K | ISO 11359-1/-2 |
| CTE – Normal | 170 × 10⁻⁶/K | ISO 11359-1/-2 |
| Flammability @ 1.6 mm | HB | IEC 60695-11-10 |
| Flammability @ 3.2 mm | HB | IEC 60695-11-10 |
Electrical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Volume Resistivity | 1 × 10¹² Ω·m | IEC 62631-3-1 |
| Relative Permittivity, 100 Hz | 6.5 | IEC 62631-2-1 |
| Relative Permittivity, 1 MHz | 3.4 | IEC 62631-2-1 |
| Dissipation Factor, 100 Hz | 1900 × 10⁻⁴ | IEC 62631-2-1 |
| Dissipation Factor, 1 MHz | 550 × 10⁻⁴ | IEC 62631-2-1 |
| Dielectric Strength | 34 kV/mm | Similar to IEC 60243-1 |
| Comparative Tracking Index (CTI) | 600 | IEC 60112 |
| Insulation Group | I | DIN EN 60664-1 |
These values confirm that VESTAMID L2121 NC remains an electrically insulating PA12-P grade while offering the flexibility required for tube and hose applications.
Why Choose VESTAMID L2121 NC?
The main reason to choose VESTAMID L2121 NC is its combination of high viscosity, flexibility and chemical resistance.
Tube extrusion requires more than simple melt flow. The material needs sufficient melt strength to maintain tube geometry after leaving the die, especially before the extrudate is fully cooled and calibrated. The high-viscosity formulation of this grade supports that requirement.
Plasticization gives the finished PA12 tube a more flexible character than rigid PA12. This is especially important for fuel, vacuum and hydraulic line systems that must bend during assembly and tolerate vibration during service.
Low moisture absorption is another major advantage. Compared with more hygroscopic polyamides, PA12 tubing shows less dimensional and mechanical change when exposed to humidity.
Finally, the chemical-resistance profile of VESTAMID L2121 NC makes it suitable for contact with many automotive and industrial fluids, including fuels, oils, alcohols and brake-fluid environments.
Processing Guidelines for VESTAMID L2121 NC
VESTAMID L2121 NC is primarily intended for profile and pipe/tube extrusion. The current product information gives a melt-temperature range of approximately 210–250°C.
| Processing Item | Typical / Recommended Guidance |
|---|---|
| Primary Processing Method | Pipe / Tube Extrusion, Profile Extrusion |
| Additional Processing | Injection Molding |
| Recommended Melt Temperature Range | Approx. 210–250°C |
| ISO Injection Test Melt Temperature | 230°C |
| ISO Injection Test Mold Temperature | 80°C |
| ISO Injection Velocity | 200 mm/s |
| ISO Holding Pressure | 70 MPa |
| Recommended Mold Temperature Range | Approx. 30–100°C |
| Supply Condition | Dry pellets in moisture-proof packaging |
Viscosity curves in the current product information are provided at 220°C, 230°C and 240°C, which is consistent with the typical processing window for this high-viscosity PA12-P grade.
The product is supplied in moisture-proof packaging and can normally be processed directly from undamaged bags. If pellets are exposed to ambient air and absorb moisture, they should be dried before processing.
For tube extrusion, die geometry, calibration, cooling conditions and line speed should be optimized to achieve the target outside diameter, wall thickness and dimensional stability.
Because VESTAMID L2121 NC is plasticized, excessive temperature and unnecessarily long residence times should be avoided.
VESTAMID L2121 NC vs. VESTAMID L1940 NC
| Feature | VESTAMID L2121 NC | VESTAMID L1940 NC |
|---|---|---|
| Base Polymer | Plasticized PA12-P | PA12 |
| Viscosity | High | Medium |
| Flexibility | Higher | Lower / more general-purpose |
| Primary Application | Semi-rigid tubes, fuel and hydraulic lines | Cable, profile extrusion and injection molding |
| Tensile Modulus | Approx. 700 MPa | Approx. 1,400 MPa dry |
| Tube Extrusion | Primary focus | Possible, but broader application profile |
| Main Selection Reason | Flexible high-viscosity tubing grade | Versatile medium-viscosity PA12 |
Choose VESTAMID L2121 NC when the application requires a high-viscosity, plasticized PA12 specifically for flexible or semi-rigid tubing.
Choose VESTAMID L1940 NC when broader injection-molding and extrusion versatility with higher stiffness is required.
Related Products
VESTAMID L1940 NC – Medium-viscosity natural-color PA12 for injection molding and extrusion.
VESTAMID L2140 NC – PA12 extrusion grade with a different viscosity and processing profile.
VESTAMID L2122 – High-viscosity plasticized PA12 family grade for fluid-line and cable-sheathing applications.
View More PA12 Polyamide 12 Materials →
Technical Documents for VESTAMID L2121 NC
| 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 |
| Chemical Resistance Data | Information for fuels, oils, alcohols and other media |
| Compliance Documents | Relevant automotive, food-contact and regulatory documents subject to availability |
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FAQ About VESTAMID L2121 NC
Q1: What is VESTAMID L2121 NC?
VESTAMID L2121 NC is a high-viscosity, plasticized PA12-P resin from Evonik developed mainly for extrusion of semi-rigid tubes and automotive pipes.
Q2: Is VESTAMID L2121 NC plasticized?
Yes. The grade is identified as PA12-P and contains plasticizer, giving it more flexibility than rigid unplasticized PA12.
Q3: What are the main applications of VESTAMID L2121 NC?
Typical applications include automotive pipes, fuel lines, vacuum lines, hydraulic lines, industrial tubing, profile extrusion and steel cable sheathing.
Q4: What is the density of VESTAMID L2121 NC?
The typical density is approximately 1.02 g/cm³ according to ISO 1183.
Q5: What is the tensile modulus of VESTAMID L2121 NC?
The typical tensile modulus is approximately 700 MPa according to ISO 527.
Q6: What is the impact strength of VESTAMID L2121 NC?
The unnotched Charpy test is reported as no break at both 23°C and -30°C. Typical notched impact strength is approximately 40 kJ/m² at 23°C and 7 kJ/m² at -30°C.
Q7: What is the melting temperature of VESTAMID L2121 NC?
The typical melting temperature is approximately 176°C.
Q8: What processing temperature is recommended for VESTAMID L2121 NC?
The current product information lists a general melt-temperature range of approximately 210–250°C. Viscosity data is provided at 220°C, 230°C and 240°C.
Q9: Is VESTAMID L2121 NC fuel resistant?
Yes. Current product information includes resistance data for standard fuels, diesel, motor oil and other automotive fluids. This is one reason the grade is used for fuel and fluid-line systems.
Q10: Can you provide VESTAMID L2121 NC TDS, SDS and COA?
Yes. Please request the required documents through our Contact Page → or email ruiqingchem@gmail.com.
Request VESTAMID L2121 NC Price & Technical Support
For pricing, availability, technical documents or material-selection support for VESTAMID L2121 NC, please provide:
- Required quantity
- Destination country or port
- Target tube / hose application
- Fluid or chemical medium
- Tube outside diameter and wall thickness
- Operating temperature and pressure
- Extrusion equipment information
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- Sample requirement, if applicable
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