描述
VESTAMID L1940 NC is a natural-color, medium-viscosity, heat-stabilized polyamide 12 compound manufactured by Evonik Operations GmbH. The grade is designed for both injection molding and extrusion, including profile extrusion and wire/cable insulation applications.
One of the main advantages of VESTAMID L1940 NC is its balanced viscosity. It offers enough melt strength for extrusion while remaining suitable for injection molding of technical parts. This makes the grade more versatile than very-low-viscosity PA12 grades developed mainly for thin cable coatings.
The PA12 base provides very low moisture absorption compared with many conventional polyamides. Published data for VESTAMID L1940 NC shows water absorption of approximately 1.5% and humidity absorption of approximately 0.8%. As a result, dimensions and mechanical properties change relatively little when environmental humidity varies.
The material also provides high impact strength, low sliding friction and good chemical resistance. These characteristics are useful in electrical, cable, automotive and industrial applications where the resin may be exposed to repeated handling, friction, oils, fuels or other chemicals.
For cable and telecommunication applications, Evonik lists the L1940 family for wire insulation, cable sheathing and fiber-optic cable protection. The medium-viscosity PA12 can provide stable extrusion behavior while maintaining toughness and chemical resistance.
VESTAMID L1940 NC is electrically insulating and supplied in natural color. The natural-color form is useful when a black pre-colored resin is not required or when downstream coloration or a neutral appearance is preferred.
Explore more grades in our PA12 Polyamide 12 Product Category →.
For manufacturer information about the VESTAMID portfolio, visit the Official Evonik VESTAMID Page →.
Key Features of VESTAMID L1940 NC
| Feature | Benefit |
|---|---|
| Medium Viscosity | Balanced processing for injection molding and extrusion |
| Heat Stabilized | Supports demanding engineering and electrical applications |
| High Impact Strength | Provides toughness for cable and molded components |
| Low Coefficient of Friction | Helps reduce sliding resistance in cable and mechanical applications |
| Low Moisture Absorption | Helps maintain dimensions under changing humidity |
| Good Chemical Resistance | Useful in contact with oils, fuels and many industrial chemicals |
| Electrical Insulation | High resistivity and CTI 600 support electrical applications |
| High Elongation | Provides ductility for wire, cable and technical molded components |
| Natural Color | Suitable where a non-black base resin is preferred |
| Injection Molding Capability | Suitable for technical molded PA12 components |
| Profile Extrusion Capability | Suitable for selected technical profiles |
| Wire / Cable Extrusion | Suitable for insulation and sheathing applications |
The broad processing capability of VESTAMID L1940 NC makes it a useful choice when the same PA12 family must support both molded and extruded components.
Typical Applications for VESTAMID L1940 NC
VESTAMID L1940 NC is suitable for electrical, cable, industrial and automotive applications requiring toughness, low moisture uptake and chemical resistance.
| Application Area | Typical Use |
|---|---|
| Wire Insulation | PA12 insulation for electrical conductors |
| Cable Sheathing | Protective outer jackets requiring toughness and low friction |
| Fiber-Optic Cables | Mechanical protection for loose-tube and telecommunication cable systems |
| Profile Extrusion | Technical extruded profiles requiring durable PA12 |
| Injection-Molded Components | Tough engineering parts with stable dimensions |
| Electrical & Electronics | Insulating parts and cable-management components |
| Automotive Components | Molded or extruded parts exposed to oils, fuels and changing humidity |
| Industrial Engineering | Technical components requiring impact and chemical resistance |
Evonik identifies electrical/electronic, fiber-optic cable, IT/telecommunication and cable sheathing among the application areas for VESTAMID L1940 NC.
Typical Properties of VESTAMID L1940 NC
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 | 0.8% | Similar to ISO 62 |
| Shore D Hardness | 75 | ISO 7619-1 |
| Melt Volume-Flow Rate (MVR) | 110 cm³/10 min | ISO 1133 |
| MVR Test Condition | 275°C / 5 kg | — |
| Molding Shrinkage – Parallel | 0.8% | ISO 294-4 / 2577 |
| Molding Shrinkage – Normal | 1.1% | ISO 294-4 / 2577 |
The published MVR and shrinkage data support the medium-viscosity processing profile of VESTAMID L1940 NC.
Mechanical Properties
| Property | Typical Value (Dry / Conditioned) | Test Method |
|---|---|---|
| Tensile Modulus | 1,400 / 1,030 MPa | ISO 527 |
| Tensile Strength | 43 / 39 MPa | ISO 527 |
| Yield Stress | 43 / 39 MPa | ISO 527 |
| Yield Strain | 4 / 14% | ISO 527 |
| Stress at 50% Strain | 33 / 30 MPa | ISO 527 |
| Stress at Break | 49 / 55 MPa | ISO 527 |
| Nominal Strain at Break | 245 / 275% | 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 | 6 / 6 kJ/m² | ISO 179/1eA |
| Charpy Notched Impact, -30°C | 6 / 4.5 kJ/m² | ISO 179/1eA |
| Flexural Modulus, 23°C | 1,450 / 1,050 MPa | ISO 178 |
| Flexural Strength, 23°C | 60 / 46 MPa | ISO 178 |
The very high elongation at break and strong unnotched impact behavior make VESTAMID L1940 NC useful for cable and technical applications where toughness is important.
Thermal 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 A | 170°C | ISO 306 |
| Vicat Softening Temperature B | 140°C | ISO 306 |
| CTE – Parallel | 150 × 10⁻⁶/K | ISO 11359-1/-2 |
| CTE – Normal | 150 × 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 / 3.1 × 10¹² Ω·m | IEC 62631-3-1 |
| Relative Permittivity, 100 Hz | 3.8 | IEC 62631-2-1 |
| Relative Permittivity, 1 MHz | 2.5 | IEC 62631-2-1 |
| Dielectric Strength | 27 kV/mm dry / 35 kV/mm conditioned | IEC 60243-1 |
| Comparative Tracking Index (CTI) | 600 | IEC 60112 |
| Insulation Group | I | DIN EN 60664-1 |
These electrical values confirm that VESTAMID L1940 NC is an electrically insulating PA12 suitable for cable, wire and electrical applications.
Why Choose VESTAMID L1940 NC?
The main reason to choose VESTAMID L1940 NC is its balance of processing versatility, toughness and dimensional stability.
Some PA12 grades are designed mainly for high-flow injection molding, while others are optimized only for extrusion. L1940 sits between those extremes. Its medium-viscosity formulation supports both injection molding and extrusion, including profile and cable applications.
The low coefficient of friction is particularly useful in cable systems. Lower sliding resistance can make cable installation easier and can reduce abrasion during routing.
The low moisture absorption of PA12 also helps maintain stable dimensions and electrical properties when humidity changes. This is a major advantage over more moisture-sensitive polyamides.
Chemical resistance is another important benefit. VESTAMID L1940 NC is suitable for environments involving fuels, oils, alcohols, hydrocarbons and other industrial media.
Finally, the natural-color formulation is useful when a black grade is not desired. It provides greater flexibility for applications that require a neutral base resin or further coloration.
Processing Guidelines for VESTAMID L1940 NC
VESTAMID L1940 NC can be processed by injection molding, profile extrusion and wire/cable extrusion. Evonik’s official VESTAMID processing guide lists a general processing-temperature range of approximately 200–240°C for VESTAMID L1940.
| Processing Item | Typical / Recommended Guidance |
|---|---|
| Processing Methods | Injection Molding, Profile Extrusion, Wire/Cable Extrusion |
| General Melt Temperature Range | Approx. 200–240°C |
| ISO Test Melt Temperature | 220°C |
| ISO Test Mold Temperature | 80°C |
| ISO Test Injection Velocity | 200 mm/s |
| ISO Test Holding Pressure | 70 MPa |
| Recommended Mold Temperature Range | Approx. 30–100°C |
| Supply Condition | Dry pellets in moisture-proof packaging |
The current product datasheet also lists approximately 200–240°C as the usable melt-temperature range and an ejection temperature of approximately 175°C.
VESTAMID compounds are supplied dry in moisture-proof packaging. Material from intact original packaging is normally ready for processing. If pellets have absorbed moisture after prolonged exposure to ambient air, drying should be carried out before production.
For cable extrusion, line speed, die geometry, melt temperature and cooling should be optimized for the conductor or tube dimensions. For injection molding, mold temperature, gate design, injection speed and holding pressure should be optimized for the actual component.
VESTAMID L1940 NC vs. VESTAMID L1940 BK 9.7504
| Feature | VESTAMID L1940 NC | VESTAMID L1940 BK 9.7504 |
|---|---|---|
| Base Polymer | PA12 | PA12 |
| Viscosity | Medium | Medium |
| Color | Natural | Black |
| Heat Stabilized | Yes | Yes |
| Injection Molding | Yes | Yes |
| Profile / Cable Extrusion | Yes | Yes |
| Main Selection Difference | Natural-color base | Ready-colored black grade |
Choose VESTAMID L1940 NC when the L1940 performance profile is required in a natural-color material.
Choose VESTAMID L1940 BK 9.7504 when a ready-colored black formulation is preferred. Pigmentation can affect individual property values, so the specific datasheet for the selected color grade should be used for final material qualification.
Related Products
VESTAMID L1940 BK 9.7504 – Black medium-viscosity PA12 for injection molding and extrusion.
VESTAMID L1670 NC – Natural-color low-viscosity PA12 for thin wire and cable extrusion.
VESTAMID L2140 NC – PA12 grade for extrusion applications requiring a different viscosity profile.
View More PA12 Polyamide 12 Materials →
Technical Documents for VESTAMID L1940 NC
| Document Type | Description |
|---|---|
| TDS | Technical Data Sheet with physical, mechanical, thermal and electrical properties |
| SDS | Safety Data Sheet |
| COA | Batch-specific Certificate of Analysis where available |
| UL Information | Relevant UL Yellow Card / flammability information |
| Compliance Documents | Relevant food-contact, automotive and regulatory documentation subject to availability |
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FAQ About VESTAMID L1940 NC
Q1: What is VESTAMID L1940 NC?
VESTAMID L1940 NC is a natural-color, medium-viscosity, heat-stabilized PA12 compound from Evonik for injection molding and extrusion.
Q2: What are the main applications of VESTAMID L1940 NC?
The main applications include wire insulation, cable sheathing, fiber-optic cable components, profile extrusion and injection-molded technical parts.
Q3: What is the color of VESTAMID L1940 NC?
NC identifies the natural-color version of the L1940 grade family.
Q4: What is the density of VESTAMID L1940 NC?
The typical density is approximately 1.01 g/cm³ according to ISO 1183.
Q5: What is the tensile modulus of VESTAMID L1940 NC?
The typical tensile modulus is approximately 1,400 MPa dry and 1,030 MPa conditioned according to ISO 527.
Q6: What is the MVR of VESTAMID L1940 NC?
The typical melt volume-flow rate is approximately 110 cm³/10 min at 275°C / 5 kg according to ISO 1133.
Q7: What is the melting temperature of VESTAMID L1940 NC?
The typical melting temperature is approximately 178°C.
Q8: What processing temperature is recommended for VESTAMID L1940 NC?
Evonik’s VESTAMID processing guide lists approximately 200–240°C for the L1940 family. The product-specific datasheet uses 220°C melt temperature and 80°C mold temperature for ISO test specimens.
Q9: Is VESTAMID L1940 NC electrically insulating?
Yes. The typical dry volume resistivity is greater than 1 × 10¹³ Ω·m, and the CTI is 600.
Q10: Can you provide VESTAMID L1940 NC TDS, SDS and COA?
Yes. Please request the required documents through our Contact Page → or email ruiqingchem@gmail.com.
Request VESTAMID L1940 NC Price & Technical Support
For pricing, availability, technical documents or grade-selection support for VESTAMID L1940 NC, please provide:
- Required quantity
- Destination country or port
- Target application
- Injection molding or extrusion process
- Cable / wire dimensions where applicable
- Color requirement
- Required mechanical or electrical performance
- TDS, SDS, COA or UL document requirements
- Sample requirement, if applicable
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