描述
VESTAMID L1670 BK 9.7504 is a low-viscosity, heat- and light-stabilized polyamide 12 compound manufactured by Evonik Operations GmbH. It was developed especially for the extrusion of thin wire insulation and cable jacketing, making it a highly application-focused PA12 grade for electrical, electronic and industrial cable systems.
One of the most important advantages of VESTAMID L1670 BK 9.7504 is its low coefficient of friction. Cable coatings made from this grade are designed to slide easily during installation, which can help simplify cable laying through conduits, guides and other confined routing systems.
The grade is also suitable for selected switchboard wiring applications. Evonik product information states that wiring insulated with this material can be soldered without interference from the resin, allowing soldering without first stripping away the insulation layer in the described application.
Another distinctive characteristic is its suitability for protective cable jackets. The PA12 coating provides strong resistance to chemicals and moisture, while the material’s low water absorption helps retain dimensions when ambient humidity changes. Evonik also identifies termite protection as an application benefit for buried cable jacketing made with this grade.
Because VESTAMID L1670 BK 9.7504 is based on partially crystalline PA12, it combines useful toughness with low moisture uptake, chemical resistance and stable electrical properties. These characteristics make the material particularly relevant where cable insulation or sheathing must withstand demanding installation and service environments.
Explore additional materials in our PA12 Polyamide 12 Product Category →.
For manufacturer information on PA12 materials for cable and wire applications, see the Official Evonik Cable Sheathing Guide →.
Key Features of VESTAMID L1670 BK 9.7504
| Feature | Benefit |
|---|---|
| Low Viscosity | Supports efficient extrusion of thin insulation layers and cable jackets |
| Heat Stabilized | Designed for improved thermal stability during use |
| Light Stabilized | Supports outdoor and light-exposed cable applications |
| Low Coefficient of Friction | Helps cables slide more easily during laying and installation |
| Low Water Absorption | Helps maintain dimensions under changing humidity |
| Good Chemical Resistance | Useful in industrial and cable environments exposed to oils, fuels and chemicals |
| High Elongation | Provides ductility for cable and insulation applications |
| Electrical Insulation | High volume resistivity and useful dielectric strength |
| Good Tracking Resistance | Typical CTI value of 600 |
| Cable & Wire Extrusion Grade | Developed specifically for wire insulation and cable jacketing |
| Termite Protection | PA12 jacketing can help protect buried cable systems |
| Black Color | Supplied as a ready-to-process black grade |
The combination of low viscosity, low sliding friction and PA12 durability makes VESTAMID L1670 BK 9.7504 different from general-purpose injection-molding PA12 grades.
Typical Applications for VESTAMID L1670 BK 9.7504
VESTAMID L1670 BK 9.7504 is primarily positioned as an extrusion material for cable and wire protection rather than as a general structural molding compound.
| Application Area | Typical Use |
|---|---|
| Thin Wire Insulation | Extruded insulation for thin electrical wires |
| Cable Jacketing | Protective outer jackets requiring low friction and chemical resistance |
| Copper Wire Insulation | Insulating layers for electrical copper wire |
| Switchboard Wiring | Insulation for wiring where soldering without stripping is beneficial |
| Polymer Optical Fiber Protection | Mono-layer PA12 protection systems for polymer optical fibers |
| Underground Cable Protection | PA12 jacketing for moisture, chemical and termite resistance |
| Electrical & Electronics | Cable and wire systems requiring dimensional and electrical stability |
| Industrial Cable Systems | Protective jackets for demanding installation conditions |
Evonik’s cable-industry guide lists VESTAMID L1670 among the suitable grades for copper-wire insulation and also identifies it as a mono-layer material for polymer optical-fiber protection.
Typical Properties of VESTAMID L1670 BK 9.7504
Physical & Rheological 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 |
| Melt Volume-Flow Rate (MVR) | 79 cm³/10 min | ISO 1133 |
| MVR Test Condition | 230°C / 2.16 kg | — |
| Molding Shrinkage – Parallel | 1.4% | ISO 294-4 / 2577 |
| Molding Shrinkage – Normal | 0.7% | ISO 294-4 / 2577 |
| Viscosity Number | 120 cm³/g | ISO 307 / 1157 / 1628 |
The relatively high MVR is consistent with the low-viscosity positioning of VESTAMID L1670 BK 9.7504 and supports its use in thin-layer extrusion applications.
Mechanical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Tensile Modulus | 1,600 MPa | ISO 527 |
| Tensile Strength | 47 MPa | ISO 527 |
| Yield Stress | 47 MPa | ISO 527 |
| Yield Strain | 8% | ISO 527 |
| Stress at 50% Strain | 33 MPa | ISO 527 |
| Stress at Break | 37 MPa | ISO 527 |
| Nominal Strain at Break | 220% | 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 | 3 kJ/m² | ISO 179/1eA |
| Charpy Notched Impact, -30°C | 5 kJ/m² | ISO 179/1eA |
| Flexural Modulus | 1,520 MPa | ISO 178 |
| Flexural Strength | 65 MPa | ISO 178 |
The high elongation at break is useful for VESTAMID L1670 BK 9.7504 because cable and wire coatings often require toughness and deformation capability rather than the very high stiffness associated with glass-fiber reinforced PA12.
Thermal Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Melting Temperature | 178°C | ISO 11357-1/-3 |
| Glass Transition Temperature | 37°C | ISO 11357-1/-2 |
| HDT @ 1.80 MPa | 50°C | ISO 75-1/-2 |
| HDT @ 0.45 MPa | 120°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 |
| Flammability @ 1.6 mm | HB | IEC 60695-11-10 |
| GWFI | 960°C @ 1 mm / 2 mm | IEC 60695-2-12 |
| GWIT | 850°C @ 1 mm / 2 mm | IEC 60695-2-13 |
Electrical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Volume Resistivity | 1 × 10¹³ Ω·m | IEC 62631-3-1 |
| Relative Permittivity, 100 Hz | 3.8 | IEC 62631-2-1 |
| Relative Permittivity, 1 MHz | 2.2 | IEC 62631-2-1 |
| Dielectric Strength | 27 kV/mm | Similar to IEC 60243-1 |
| Comparative Tracking Index (CTI) | 600 | IEC 60112 |
| Insulation Group | I | DIN EN 60664-1 |
These electrical properties support the use of VESTAMID L1670 BK 9.7504 as an insulating PA12 material for cable and wire applications.
Why Choose VESTAMID L1670 BK 9.7504?
The main reason to choose VESTAMID L1670 BK 9.7504 is that it is specifically engineered around cable and wire extrusion requirements.
A standard PA12 grade may provide good chemical resistance and low moisture absorption, but this grade additionally offers low viscosity and a low coefficient of friction. These properties are particularly useful when producing thin insulation layers and when finished cables must move easily during installation.
The material also provides strong dimensional stability because PA12 absorbs relatively little moisture. This reduces the dimensional changes that can occur when cable jackets are exposed to different humidity levels.
For underground or industrial cable systems, chemical resistance and PA12 toughness are additional advantages. The manufacturer also highlights termite protection for buried cable jacketing and the ability to use L1670 in polymer optical-fiber and copper-wire insulation applications.
Processing Guidelines for VESTAMID L1670 BK 9.7504
VESTAMID L1670 BK 9.7504 is designed primarily for wire and cable extrusion. Evonik’s general VESTAMID processing guide lists a melt-processing temperature range of approximately 180–220°C for VESTAMID L1670.
| Processing Item | Recommended Guidance |
|---|---|
| Primary Processing Method | Wire / Cable Extrusion |
| General Melt Temperature | Approx. 180–220°C |
| Moisture Content Before Processing | ≤ 0.10% |
| Hopper Dryer Temperature | Approx. 60–80°C when needed |
| Drying of Open / Damaged Packaging | Approx. 90–100°C in desiccant dryer |
| Drying Time for Open / Damaged Material | Minimum approx. 2 hours in desiccant dryer |
| Supply Condition | Dry, moisture-proof packaging |
Material from intact moisture-proof packaging normally does not require additional drying. During processing, however, Evonik recommends a dehumidifying hopper dryer because PA12 pellets can absorb moisture after exposure to ambient air.
For VESTAMID L1670 BK 9.7504, actual extrusion settings should be optimized for the extrusion line, die design, conductor diameter, wall thickness and line speed. Avoid unnecessary overheating or excessive residence time.
VESTAMID L1670 BK 9.7504 vs. Standard PA12 Cable Grade
| Feature | VESTAMID L1670 BK 9.7504 | Standard PA12 Cable Grade |
|---|---|---|
| Base Polymer | PA12 | PA12 |
| Viscosity | Low | Grade dependent |
| Main Processing | Wire / Cable Extrusion | Grade dependent |
| Heat & Light Stabilization | Yes | Grade dependent |
| Low-Friction Coating | Key feature | Not always specifically optimized |
| Thin Wire Insulation | Specifically developed for this use | Depends on grade |
| Cable Jacketing | Specifically developed for this use | Depends on grade |
| Termite Protection | Identified application benefit | Depends on formulation/application |
| Primary Selection Reason | Thin-layer extrusion + low friction | General PA12 performance |
Choose VESTAMID L1670 BK 9.7504 when the project specifically requires a low-viscosity PA12 for wire insulation or cable jacketing.
Related Products
VESTAMID L1940 – Medium-viscosity PA12 grade used in cable and fiber-optic applications.
VESTAMID L2140 – Medium-viscosity PA12 used for demanding cable and tube applications.
VESTAMID LX9057 – PA12 cable grade for applications requiring enhanced flame-retardant performance.
View More PA12 Polyamide 12 Materials →
Technical Documents for VESTAMID L1670 BK 9.7504
| 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 |
| Compliance Documents | Relevant regulatory and material compliance documents subject to availability |
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FAQ About VESTAMID L1670 BK 9.7504
Q1: What is VESTAMID L1670 BK 9.7504?
VESTAMID L1670 BK 9.7504 is a low-viscosity, heat- and light-stabilized PA12 compound from Evonik developed especially for thin wire insulation and cable jacketing.
Q2: What is the main application of VESTAMID L1670 BK 9.7504?
The primary applications are wire insulation and cable jacketing. The grade is also referenced for copper-wire insulation and polymer optical-fiber protection.
Q3: Is VESTAMID L1670 BK 9.7504 a low-viscosity PA12?
Yes. VESTAMID L1670 BK 9.7504 is specifically classified as a low-viscosity PA12 grade, which supports efficient thin-layer extrusion.
Q4: What is the density of VESTAMID L1670 BK 9.7504?
The typical density is approximately 1.01 g/cm³ according to ISO 1183.
Q5: What is the tensile modulus of VESTAMID L1670 BK 9.7504?
The typical tensile modulus is approximately 1,600 MPa according to ISO 527.
Q6: What is the melting temperature of VESTAMID L1670 BK 9.7504?
The typical melting temperature is approximately 178°C according to ISO 11357.
Q7: What is the dielectric strength of VESTAMID L1670 BK 9.7504?
The published typical dielectric strength is approximately 27 kV/mm, measured similarly to IEC 60243-1.
Q8: What processing temperature is recommended for VESTAMID L1670 BK 9.7504?
Evonik’s general processing guide lists approximately 180–220°C as the processing-temperature range for VESTAMID L1670. Actual cable-extrusion settings should be optimized for the equipment and product design.
Q9: Does VESTAMID L1670 BK 9.7504 need drying before extrusion?
Material from intact moisture-proof packaging is supplied dry and normally does not need additional drying. If the packaging has been opened or damaged, the material should be dried and the moisture content brought below approximately 0.10%.
Q10: Can you provide VESTAMID L1670 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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