描述
VESTAMID LC-GF23 BK is a semi-crystalline, heat- and UV-stabilized polyamide 12 compound from Evonik Operations GmbH reinforced with 23% glass fiber. It is designed primarily for injection-molded connectors and is especially suitable for automotive, mobility and engineering applications.
Evonik positions the LC-GF family as fiberglass-reinforced PA12 for high-quality lightweight automotive components. The product family is available in several reinforcement levels so designers can select the required balance between stiffness, strength and flexibility. VESTAMID LC-GF23 BK is the black 23% glass-fiber grade.
A key design objective of VESTAMID LC-GF23 BK is to combine reinforcement with relatively high strain at break. The current product information describes the grade as a glass-fiber-reinforced PA12 compound with high strain at break for injection molding. This is particularly valuable for quick connectors, because these parts need rigidity for dimensional control but also enough ductility to withstand assembly loads, clips, locking features and vibration.
The PA12 matrix absorbs only small amounts of water. As a result, components molded from VESTAMID LC-GF23 BK show excellent dimensional accuracy when ambient humidity changes. This is important for precision connectors, housings and fluid-system components where dimensional variation can affect sealing, locking or assembly.
The 23% glass-fiber reinforcement increases stiffness, strength and thermal load capacity compared with unfilled PA12. At the same time, PA12 offers low moisture sensitivity, chemical stability and useful low-temperature toughness.
The grade is black, laser absorbing and electrically insulating. Current product information also identifies it as fuel resistant, heat stabilized, UV/light/weathering stabilized and halogen-free.
For more reinforced PA12 materials, visit our PA12 Polyamide 12 Product Category →.
For manufacturer positioning of the LC-GF series, see the Official Evonik VESTAMID LC-GF Quick Connector Material Guide →.
Key Features of VESTAMID LC-GF23 BK
| Feature | Benefit |
|---|---|
| 23% Glass Fiber Reinforcement | Increases stiffness, strength and dimensional stability |
| High Strain at Break | Helps connectors tolerate assembly stress and mechanical deformation |
| Heat Stabilized | Supports demanding automotive and engineering environments |
| UV / Light / Weathering Stabilized | Helps maintain performance where light exposure is relevant |
| Low Water Absorption | Reduces humidity-related dimensional changes |
| Excellent Dimensional Stability | Supports precision connector geometry and sealing surfaces |
| Strong Low-Temperature Impact Performance | Useful for automotive components exposed to winter conditions |
| Fuel Resistance | Relevant to automotive connector and fluid-system environments |
| Electrical Insulation | Suitable for selected connector and electrical-component applications |
| Laser Absorbing | Supports applications using laser-based identification or processing |
| Halogen-Free | Current grade information lists the material as halogen-free |
| Black Color | Allows direct molding of black components without secondary coloration |
The 23% reinforcement level gives VESTAMID LC-GF23 BK a higher stiffness profile than LC-GF15 while maintaining useful elongation and impact strength.
Typical Applications for VESTAMID LC-GF23 BK
VESTAMID LC-GF23 BK is primarily designed for injection-molded connector systems.
| Application Area | Typical Use |
|---|---|
| Automotive Quick Connectors | Fluid-line connectors requiring stiffness, dimensional stability and toughness |
| Connector Housings | Precision molded housings exposed to temperature and humidity variation |
| Fuel-System Components | Selected connector bodies requiring fuel resistance |
| Automotive Fluid Systems | Reinforced PA12 components around fluid-line assemblies |
| Clips & Locking Elements | Parts requiring stiffness with useful strain capability |
| Industrial Connectors | Precision connection parts with chemical and dimensional requirements |
| Mobility Components | Lightweight reinforced PA12 parts replacing metal in selected designs |
| Precision Injection-Molded Parts | Components requiring stable dimensions and high mechanical load capacity |
Evonik specifically markets the LC-GF family for quick connectors and highlights potential metal replacement, weight reduction, corrosion resistance and design flexibility.
Typical Properties of VESTAMID LC-GF23 BK
Physical & Rheological Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Glass Fiber Content | 23% | Product designation / Evonik portfolio |
| Density | 1.19 g/cm³ | ISO 1183 |
| Moisture Content | 0.021 wt.% | ISO 15512 |
| Shore D Hardness | 79 | ISO 7619-1 |
| Melt Volume-Flow Rate (MVR) | 27 cm³/10 min | ISO 1133 |
| MVR Test Condition | 275°C / 5 kg | — |
| Molding Shrinkage – Parallel | 0.3% | ISO 294-4 / 2577 |
| Molding Shrinkage – Normal | 0.8% | ISO 294-4 / 2577 |
| Corrected Viscosity Number | 166 cm³/g | ISO 307 / 1157 / 1628 |
| Relative Solution Viscosity | 1.83 | ISO 307 |
The relatively low molding shrinkage of VESTAMID LC-GF23 BK is particularly useful for precision connectors where dimensional repeatability is important.
Mechanical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Tensile Modulus | Approx. 5,740 MPa | ISO 527 |
| Yield Stress | Approx. 110 MPa | ISO 527 |
| Yield Strain | 4% | ISO 527 |
| Stress at Break | Approx. 104 MPa | ISO 527 |
| Strain at Break | 7% | ISO 527 |
| Nominal Strain at Break | 7% | ISO 527 |
| Charpy Impact Strength, 23°C | Approx. 89 kJ/m² | ISO 179/1eU |
| Charpy Impact Strength, -30°C | Approx. 97 kJ/m² | ISO 179/1eU |
| Charpy Impact Strength, -40°C | Approx. 95 kJ/m² | ISO 179/1eU |
| Charpy Notched Impact, 23°C | Approx. 21 kJ/m² | ISO 179/1eA |
| Charpy Notched Impact, -30°C | Approx. 14 kJ/m² | ISO 179/1eA |
| Charpy Notched Impact, -40°C | Approx. 13 kJ/m² | ISO 179/1eA |
These results show that VESTAMID LC-GF23 BK combines a high modulus with useful elongation and excellent low-temperature impact behavior.
Thermal Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Melting Temperature | Approx. 177°C | ISO 11357-1/-3 |
| Glass Transition Temperature | Approx. 42°C | ISO 11357-1/-2 |
| HDT @ 1.80 MPa | Approx. 166°C | ISO 75-1/-2 |
| HDT @ 0.45 MPa | Approx. 179°C | ISO 75-1/-2 |
| Vicat Softening Temperature A | Approx. 177°C | ISO 306 |
| Vicat Softening Temperature B | Approx. 174°C | ISO 306 |
The approximately 166°C HDT at 1.80 MPa demonstrates the high thermal load capacity provided by the 23% glass-fiber reinforcement.
Why Choose VESTAMID LC-GF23 BK?
The main reason to choose VESTAMID LC-GF23 BK is its balance of high stiffness, toughness and dimensional stability.
Quick connectors must maintain precise dimensions because sealing surfaces, locking tabs and snap-fit features depend on controlled geometry. The 23% glass-fiber reinforcement increases rigidity and reduces molding shrinkage, while the PA12 matrix limits humidity-related dimensional changes.
At the same time, the grade retains approximately 7% strain at break. This is important because connector components are not purely static structures; locking features and assembly interfaces may need to flex during installation.
Low-temperature impact behavior is another major advantage. Automotive components can experience winter conditions well below 0°C, and VESTAMID LC-GF23 BK retains strong impact performance down to -40°C in the published data.
The material is also heat and UV stabilized, fuel resistant and chemically stable. These characteristics make it particularly suitable for automotive fluid-line connector systems.
Finally, the black color allows processors to mold finished black components directly, eliminating a separate coloration step that may be needed with a natural-color resin.
Processing Guidelines for VESTAMID LC-GF23 BK
VESTAMID LC-GF23 BK is designed primarily for injection molding.
The current product information gives the following processing recommendations:
| Processing Parameter | Recommended Range / Value |
|---|---|
| Pre-Drying Temperature | 80–100°C |
| Pre-Drying Time | 2–4 hours |
| Target Processing Moisture | ≤0.1% |
| Melt Temperature | 240–280°C |
| Mold Temperature | 60–100°C |
| Feed Temperature | 40–60°C |
| Typical Nozzle Temperature | Approx. 255°C |
| Typical Screw Speed | Approx. 127 rpm |
| Circumferential Screw Speed | Approx. 0.05–0.20 m/s |
| Back Pressure | Approx. 0.3–0.8 MPa |
| Typical Holding Pressure | Approx. 7 MPa |
The material is supplied as cylindrical pellets in a ready-to-process condition and packed in moisture-tight packaging.
If the original packaging remains intact, unnecessary drying should be avoided. If the pellets have absorbed moisture after opening, the recommended drying conditions of 80–100°C for 2–4 hours provide a suitable starting point.
The melt-temperature range of 240–280°C and mold-temperature range of 60–100°C should be adjusted according to part geometry, wall thickness, flow length and gate design.
Because VESTAMID LC-GF23 BK contains 23% glass fiber, fiber orientation can influence local mechanical properties and shrinkage. Critical connector features should therefore be evaluated in the real mold rather than relying only on isotropic material assumptions.
VESTAMID LC-GF23 BK vs. VESTAMID LC-GF23 NC
| Feature | VESTAMID LC-GF23 BK | VESTAMID LC-GF23 NC |
|---|---|---|
| Base Polymer | PA12 | PA12 |
| Glass Fiber Content | 23% | 23% |
| Color | Black | Natural |
| Primary Process | Injection Molding | Injection Molding |
| Primary Application | Automotive quick connectors | Automotive quick connectors |
| Heat / UV Stabilization | Yes | Yes |
| Main Selection Difference | Ready-colored black formulation | Natural-color formulation for later coloration |
| Qualification Rule | Use BK-specific TDS | Use NC-specific TDS |
Evonik offers both black and natural versions of the LC-GF23 reinforcement level.
Choose VESTAMID LC-GF23 BK when the finished component should be black without an additional coloring step.
Choose VESTAMID LC-GF23 NC when a natural base resin is required for downstream coloration or a different appearance.
Related Products
VESTAMID LC-GF23 NC – Natural-color PA12 with 23% glass fiber for automotive quick connectors.
VESTAMID LC-GF15 NC – 15% glass-fiber-reinforced PA12 offering a more flexible stiffness/impact balance.
VESTAMID LC-GF30 BK – Black PA12 with 30% glass fiber for higher-stiffness connector components.
View More PA12 Polyamide 12 Materials →
Technical Documents for VESTAMID LC-GF23 BK
| Document Type | Description |
|---|---|
| TDS | Technical Data Sheet with mechanical, thermal, rheological and processing properties |
| SDS | Safety Data Sheet |
| COA | Batch-specific Certificate of Analysis where available |
| Quick Connector Guide | Evonik LC-GF product-family information |
| Automotive Compliance | Relevant automotive documentation subject to availability |
Need technical documents for VESTAMID LC-GF23 BK?
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FAQ About VESTAMID LC-GF23 BK
Q1: What is VESTAMID LC-GF23 BK?
VESTAMID LC-GF23 BK is a black, semi-crystalline PA12 compound from Evonik reinforced with 23% glass fiber and designed primarily for injection-molded automotive quick connectors.
Q2: How much glass fiber does VESTAMID LC-GF23 BK contain?
The grade contains 23% glass fiber.
Q3: What is the tensile modulus of VESTAMID LC-GF23 BK?
The published tensile modulus is approximately 5,740 MPa according to ISO 527.
Q4: What is the yield strength of VESTAMID LC-GF23 BK?
The typical yield stress is approximately 110 MPa according to ISO 527.
Q5: What is the density of VESTAMID LC-GF23 BK?
The typical density is approximately 1.19 g/cm³ according to ISO 1183.
Q6: What is the MVR of VESTAMID LC-GF23 BK?
The typical melt volume-flow rate is approximately 27 cm³/10 min at 275°C / 5 kg according to ISO 1133.
Q7: What is the HDT of VESTAMID LC-GF23 BK?
The typical heat-deflection temperature is approximately 166°C at 1.80 MPa and 179°C at 0.45 MPa.
Q8: What injection-molding temperatures are recommended?
The current product information lists a melt-temperature range of approximately 240–280°C and a mold-temperature range of approximately 60–100°C.
Q9: Is VESTAMID LC-GF23 BK suitable for fuel-system connectors?
Yes. Evonik positions the grade for automotive quick connectors and current product information identifies it as fuel resistant. Final material approval should still consider the actual fuel, temperature, pressure and connector design.
Q10: Can you provide VESTAMID LC-GF23 BK TDS, SDS and COA?
Yes. Please request the required technical documents through our Contact Page → or email ruiqingchem@gmail.com.
Request VESTAMID LC-GF23 BK Price & Technical Support
For pricing, availability, technical documents or material-selection support for VESTAMID LC-GF23 BK, please provide:
- Required quantity
- Destination country or port
- Connector or molded-part application
- Fluid or fuel medium
- Continuous and peak operating temperature
- Pressure requirement
- Critical dimensions or wall thickness
- Required automotive standard or approval
- Injection-molding machine information
- TDS, SDS or COA requirements
- Sample requirement, if applicable
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