描述
VESTAMID L2123 BK 9.7507 is a black, high-viscosity, plasticized polyamide 12 compound manufactured by Evonik Operations GmbH for extrusion of flexible tubing and hoses, especially for automotive applications.
The current product description states that VESTAMID L2123 BK 9.7507 complies with DIN 73 378, Type PA 12-PHL for tubing. This makes the grade particularly relevant where processors need a proven PA12 formulation for flexible automotive tube systems.
One of the most important properties of VESTAMID L2123 BK 9.7507 is its optimized low-temperature impact resistance. Tubes used in vehicles can experience vibration, bending, stone impact and cold weather, so the material must remain tough rather than becoming brittle at low temperature.
The grade also has high melt viscosity and good dimensional control during pipe extrusion. High melt strength helps the extruded tube retain its shape between the die and the calibration/cooling system, which is important for maintaining outside diameter and wall thickness.
Because the base polymer is PA12, VESTAMID L2123 BK 9.7507 absorbs relatively little moisture. Published humidity absorption is approximately 0.6%. This helps reduce dimensional and mechanical changes when ambient humidity varies.
The material is plasticized, lubricated and impact modified. It is also light stabilized, UV stabilized and heat stabilized. These features support flexible tubing exposed to demanding automotive service environments.
Chemical resistance is another major advantage. Current material data lists resistance testing against acids, alkalis, alcohols, hydrocarbons, mineral oils, standard fuels, diesel and salt solutions. This makes the grade suitable for automotive and industrial tube systems where chemical exposure is a design consideration.
Explore additional grades in our PA12 Polyamide 12 Product Category →.
For manufacturer information about the broader VESTAMID portfolio, visit the Official Evonik VESTAMID Page →.
Key Features of VESTAMID L2123 BK 9.7507
| Feature | Benefit |
|---|---|
| High Melt Viscosity | Supports dimensional control during pipe and tube extrusion |
| Plasticized PA12 | Provides greater flexibility than rigid unplasticized PA12 |
| Impact Modified | Improves toughness for demanding automotive tubing |
| Optimized Cold-Impact Strength | Helps maintain impact performance at sub-zero temperatures |
| Heat Stabilized | Supports demanding automotive service conditions |
| Light / UV Stabilized | Suitable for applications exposed to light and weather |
| Low Moisture Absorption | Helps minimize humidity-related property changes |
| Low Coefficient of Friction | Supports smooth handling and reduced sliding resistance |
| Good Chemical Resistance | Useful in environments involving fuels, oils and industrial chemicals |
| Lubricated Formulation | Supports stable processing and tribological performance |
| Black Color | Ready-colored formulation for automotive tube systems |
| Tube / Hose Extrusion Grade | Developed specifically for flexible tubing and hose applications |
The combination of high melt viscosity and optimized cold-impact performance is the main reason VESTAMID L2123 BK 9.7507 stands out from more general-purpose PA12 extrusion grades.
Typical Applications for VESTAMID L2123 BK 9.7507
VESTAMID L2123 BK 9.7507 is primarily positioned for flexible automotive tubing and hose extrusion.
| Application Area | Typical Use |
|---|---|
| Automotive Tubing | Flexible PA12 tubes for vehicle systems |
| Pneumatic Lines | Flexible tubing requiring good cold-impact behavior |
| Air-Line Systems | Tubing manufactured to suitable automotive specifications |
| Flexible Hoses | Hose constructions requiring PA12 toughness and chemical resistance |
| Coiled Tubing | Spiral or coiled tube systems requiring flexibility |
| Industrial Pneumatics | Pressure tubing exposed to vibration and temperature changes |
| Chemical-Resistant Tubes | Lines exposed to oils, fuels, alcohols or other media |
| General Pipe / Tube Extrusion | High-viscosity PA12 applications requiring dimensional control |
The grade’s DIN 73 378 PA 12-PHL positioning, flexibility and low-temperature impact performance make it especially relevant for automotive tubing rather than general rigid injection-molded parts.
Typical Properties of VESTAMID L2123 BK 9.7507
Physical & Rheological Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 1.03 g/cm³ | ISO 1183 |
| Humidity Absorption | 0.6% | Similar to ISO 62 |
| Melt Volume-Flow Rate (MVR) | 40 cm³/10 min | ISO 1133 |
| MVR Test Condition | 275°C / 5 kg | — |
| Delivery Form | Cylindrical Pellets / Granules | — |
| Color | Black | — |
The MVR value confirms that the black grade should be treated according to its own datasheet rather than by directly copying data from the natural-color L2123 version.
Mechanical Properties
| Property | Typical Value (Dry / Conditioned) | Test Method |
|---|---|---|
| Tensile Modulus | 420 / 400 MPa | ISO 527 |
| Yield Stress | 26 / 25 MPa | ISO 527 |
| Yield Strain | 32 / 30% | 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 | 106 kJ/m² dry | ISO 179/1eA |
| Charpy Notched Impact, -30°C | 13 / 8 kJ/m² | ISO 179/1eA |
The combination of low modulus, high yield strain and excellent Charpy impact performance explains why VESTAMID L2123 BK 9.7507 is well suited to flexible tubing.
Thermal Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Melting Temperature | 171°C | ISO 11357-1/-3 |
| HDT @ 1.80 MPa | 45°C | ISO 75-1/-2 |
| HDT @ 0.45 MPa | 80°C | ISO 75-1/-2 |
| Vicat Softening Temperature B | 120°C | ISO 306 |
| CTE – Parallel | 170 × 10⁻⁶/K | ISO 11359-1/-2 |
| CTE – Normal | 180 × 10⁻⁶/K | ISO 11359-1/-2 |
| Flammability @ 1.5 mm nominal | HB | IEC 60695-11-10 |
| Test Thickness | 1.6 mm | — |
Electrical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Volume Resistivity | >1 × 10¹³ Ω·m | IEC 62631-3-1 |
| Relative Permittivity, 100 Hz | 10 | IEC 62631-2-1 |
| Relative Permittivity, 1 MHz | 3.6 | IEC 62631-2-1 |
| Dissipation Factor, 100 Hz | 2000 × 10⁻⁴ | IEC 62631-2-1 |
| Dissipation Factor, 1 MHz | 1100 × 10⁻⁴ | IEC 62631-2-1 |
| Comparative Tracking Index (CTI) | 600 | IEC 60112 |
These values confirm that VESTAMID L2123 BK 9.7507 is electrically insulating rather than an antistatic or conductive PA12 grade.
Why Choose VESTAMID L2123 BK 9.7507?
The primary reason to choose VESTAMID L2123 BK 9.7507 is its combination of flexible PA12 behavior, high melt viscosity and cold-impact resistance.
Automotive tubing is mechanically demanding. A tube may be bent during assembly, vibrated during service and exposed to low temperatures. A brittle material can crack under these conditions, so cold-impact behavior is a major selection factor.
The dry tensile modulus of approximately 420 MPa demonstrates that this is a flexible plasticized PA12 rather than a rigid engineering-plastic grade. At the same time, the material retains very high impact resistance.
The high melt viscosity is important during extrusion because it improves shape stability before calibration and cooling. This can help processors achieve more consistent tube geometry.
Low moisture absorption is another advantage. The material’s properties vary relatively little with humidity, which is important for tube systems expected to maintain dimensional consistency in changing environments.
Finally, broad PA12 chemical resistance supports use in automotive environments involving fuels, oils, alcohols, hydrocarbons, salt solutions and other service media.
Processing Guidelines for VESTAMID L2123 BK 9.7507
VESTAMID L2123 BK 9.7507 is primarily designed for pipe/tube extrusion and other extrusion processes.
The current material datasheet provides the following ISO injection-molding test conditions for standardized test specimens:
| Processing Item | Published Condition |
|---|---|
| Primary Production Process | Pipe / Tube Extrusion, Other Extrusion |
| ISO Test Melt Temperature | 220°C |
| ISO Test Mold Temperature | 60°C |
| ISO Test Injection Velocity | 200 mm/s |
| ISO Test Holding Pressure | 70 MPa |
| Supply Condition | Ready-to-process pellets in moisture-proof bags |
The 220°C injection-molding value is a standardized specimen-production condition rather than a universal tube-extrusion temperature setting.
For actual tube production, barrel temperatures, die temperature, extrusion speed, calibration and cooling should be optimized according to the tube diameter, wall thickness, line output and equipment design.
Evonik supplies VESTAMID L2123 BK 9.7507 in moisture-proof packaging and describes it as ready for processing. If packaging is damaged or granules are exposed to moisture for an extended period, drying should follow Evonik’s general VESTAMID processing recommendations.
Inside original, undamaged packaging, the published shelf life is at least two years when stored dry at temperatures not exceeding 30°C.
VESTAMID L2123 BK 9.7507 vs. VESTAMID L2123 Natural Color
| Feature | VESTAMID L2123 BK 9.7507 | VESTAMID L2123 Natural Color |
|---|---|---|
| Base Polymer | Plasticized / impact-modified PA12 | Plasticized / impact-modified PA12 |
| Color | Black | Natural |
| Viscosity Positioning | High | High |
| Primary Application | Flexible automotive tubes and hoses | Flexible automotive tubes and hoses |
| Cold-Impact Performance | Optimized | Optimized |
| MVR Test | 40 cm³/10 min @ 275°C / 5 kg | Published under different test conditions |
| Main Selection Difference | Ready-colored black formulation | Natural-color formulation |
The two grades share the same general L2123 application concept, but pigmentation can affect measured properties. Therefore, the exact black-grade datasheet should be used when qualifying VESTAMID L2123 BK 9.7507.
Related Products
VESTAMID L2123 – Natural-color L2123 family grade for flexible automotive tube extrusion.
VESTAMID L2121 NC – High-viscosity plasticized PA12 for semi-rigid fuel, vacuum and hydraulic tubing.
VESTAMID L2124 BK 9.7507 – High-viscosity plasticized PA12 for flexible tubing, hoses and oil/petrochemical applications.
View More PA12 Polyamide 12 Materials →
Technical Documents for VESTAMID L2123 BK 9.7507
| Document Type | Description |
|---|---|
| TDS | Technical Data Sheet with rheological, mechanical, thermal and electrical properties |
| SDS | Safety Data Sheet |
| COA | Batch-specific Certificate of Analysis where available |
| Chemical Resistance Data | Resistance data for fuels, oils, alcohols, hydrocarbons and other media |
| Compliance Documents | Relevant automotive and regulatory documentation subject to availability |
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FAQ About VESTAMID L2123 BK 9.7507
Q1: What is VESTAMID L2123 BK 9.7507?
VESTAMID L2123 BK 9.7507 is a black, high-viscosity, plasticized and impact-modified PA12 compound from Evonik for flexible automotive tubing and hose extrusion.
Q2: Is VESTAMID L2123 BK 9.7507 suitable for automotive tubing?
Yes. The grade is specifically developed for flexible tubing and hoses, especially for automotive applications, and is described for tubing according to DIN 73 378 Type PA 12-PHL.
Q3: What is the density of VESTAMID L2123 BK 9.7507?
The typical density is approximately 1.03 g/cm³ according to ISO 1183.
Q4: What is the MVR of VESTAMID L2123 BK 9.7507?
The typical melt volume-flow rate is approximately 40 cm³/10 min at 275°C / 5 kg according to ISO 1133.
Q5: What is the tensile modulus of VESTAMID L2123 BK 9.7507?
The typical tensile modulus is approximately 420 MPa dry and 400 MPa conditioned.
Q6: How good is the low-temperature impact resistance?
The unnotched Charpy result is reported as no break at -30°C, while the notched impact strength is approximately 13 kJ/m² dry and 8 kJ/m² conditioned.
Q7: What is the melting temperature of VESTAMID L2123 BK 9.7507?
The typical melting temperature is approximately 171°C.
Q8: Is VESTAMID L2123 BK 9.7507 electrically conductive?
No. Its typical volume resistivity is greater than 1 × 10¹³ Ω·m, so it is an electrically insulating grade.
Q9: Does VESTAMID L2123 BK 9.7507 have good chemical resistance?
Yes. Current data includes resistance information for fuels, diesel, motor oil, alcohols, hydrocarbons, acids, bases and salt solutions.
Q10: Can you provide VESTAMID L2123 BK 9.7507 TDS, SDS and COA?
Yes. Please request the required technical documents through our Contact Page → or email ruiqingchem@gmail.com.
Request VESTAMID L2123 BK 9.7507 Price & Technical Support
For pricing, availability, technical documents or grade-selection support for VESTAMID L2123 BK 9.7507, please provide:
- Required quantity
- Destination country or port
- Tube / hose application
- Tube outside diameter and wall thickness
- Operating pressure and temperature
- Fluid or gas medium
- Required automotive standard
- Extrusion-line information
- TDS, SDS or COA requirements
- Sample requirement, if applicable
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