描述
VESTAMID L1930 BK 9.7503 is a heat-stabilized polyamide 12 compound reinforced with approximately 30% milled glass fiber. Manufactured by Evonik Operations GmbH, this PA12-GD30 grade is designed for injection molding of rigid, dimensionally stable and low-warpage precision components.
The reinforcement system is a key differentiator. Instead of relying only on conventional long glass-fiber orientation, VESTAMID L1930 BK 9.7503 uses specialty short / milled glass fibers. This significantly reduces the difference between longitudinal and transverse shrinkage compared with many conventional glass-fiber reinforced compounds. The result is more balanced shrinkage and improved suitability for precision parts where warpage must be minimized.
The PA12 base also contributes important benefits. Polyamide 12 absorbs relatively little water, so dimensional changes caused by ambient humidity are much smaller than with many shorter-chain polyamides. Published data for this grade shows water absorption of approximately 1.1% and humidity absorption around 0.5%.
Mechanical performance is another strong point. Typical dry tensile modulus is about 3,800 MPa and yield stress about 65 MPa. These values provide useful rigidity while the material retains meaningful impact strength, including at -30°C.
As a semi-crystalline PA12, VESTAMID L1930 BK 9.7503 also offers excellent resistance to fuels, oils, greases and other chemicals. This combination of stiffness, dimensional stability, chemical resistance and low warpage makes the grade particularly relevant to automotive and general industrial precision components.
One proven automotive application for the L1930 family is gear wheels used in steering-angle sensors for electronic stability-control systems. Evonik has highlighted the material’s dimensional stability, impact behavior, abrasion resistance and low sliding friction as important benefits in this application.
Explore additional grades in our PA12 Polyamide 12 Product Category →.
For manufacturer information about VESTAMID L1930, visit the Official Daicel-Evonik VESTAMID L1930 Page →.
Key Features of VESTAMID L1930 BK 9.7503
| Feature | Benefit |
|---|---|
| 30% Milled Glass Fiber Reinforcement | Provides high rigidity and strength while supporting balanced shrinkage |
| Low Warpage | Specialty short glass fibers reduce shrinkage anisotropy |
| Heat Stabilized | Supports demanding injection-molded engineering applications |
| Low Water Absorption | Helps maintain dimensions when ambient humidity changes |
| Good Dimensional Stability | Suitable for precision components and tight tolerances |
| Low Mold Shrinkage | Approx. 0.5% in both parallel and normal directions in published ISO data |
| Chemical Resistance | Good resistance to fuels, oils, greases and many industrial chemicals |
| Useful Impact Strength | Retains impact performance at room and sub-zero temperatures |
| Electrical Insulation | High volume resistivity and dielectric strength |
| Semi-Crystalline PA12 | Combines toughness, chemical resistance and moisture stability |
| Black Pellets | Supplied as a ready-colored injection-molding compound |
| Injection Molding Grade | Designed for precision reinforced PA12 molded parts |
The low-warpage behavior is the most important reason VESTAMID L1930 BK 9.7503 should not be treated as just another conventional PA12-GF30 grade.
Typical Applications for VESTAMID L1930 BK 9.7503
VESTAMID L1930 BK 9.7503 is suitable for injection-molded parts that require rigidity, dimensional accuracy and resistance to moisture and automotive fluids.
| Application Area | Typical Use |
|---|---|
| Automotive Sensors | Precision gear wheels and sensor components |
| Steering-Angle Sensors | Gear-drive components requiring dimensional accuracy and low wear |
| Precision Gears | Low-warpage gears and mechanical transmission components |
| Automotive Components | Rigid molded parts exposed to fuels, oils or temperature changes |
| Industrial Equipment | Dimensionally stable housings and structural components |
| Electrical Components | Insulating structural parts and precision housings |
| Mechanical Engineering | Low-warpage parts requiring balanced shrinkage |
| Precision Injection Molding | Components with tight dimensional tolerances |
Evonik has publicly documented the use of VESTAMID L1930 for gear wheels in steering-angle sensors, where dimensional stability and rugged mechanical behavior are important for accurate sensor operation.
Typical Properties of VESTAMID L1930 BK 9.7503
Physical & Processing Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 1.24 g/cm³ | ISO 1183 |
| Water Absorption | 1.1% | Similar to ISO 62 |
| Humidity Absorption | 0.5% | Similar to ISO 62 |
| Melt Volume-Flow Rate (MVR) | 27 cm³/10 min | ISO 1133 |
| MVR Test Condition | 250°C / 5 kg | — |
| Molding Shrinkage – Parallel | 0.5% | ISO 294-4 / 2577 |
| Molding Shrinkage – Normal | 0.5% | ISO 294-4 / 2577 |
The nearly identical published shrinkage values in the two principal directions help explain the low-warpage positioning of VESTAMID L1930 BK 9.7503.
Mechanical Properties
| Property | Typical Value (Dry / Conditioned) | Test Method |
|---|---|---|
| Tensile Modulus | 3,800 / 2,970 MPa | ISO 527 |
| Yield Stress | 65 / 58 MPa | ISO 527 |
| Yield Strain | 5 / 8% | ISO 527 |
| Nominal Strain at Break | 11 / 15% | ISO 527 |
| Charpy Unnotched Impact, 23°C | 75 / 82 kJ/m² | ISO 179/1eU |
| Charpy Unnotched Impact, -30°C | 65 / 72 kJ/m² | ISO 179/1eU |
| Charpy Notched Impact, 23°C | 7 / 6 kJ/m² | ISO 179/1eA |
| Charpy Notched Impact, -30°C | 6 / 5 kJ/m² | ISO 179/1eA |
These values show that VESTAMID L1930 BK 9.7503 combines reinforced rigidity with useful toughness, including at low temperature.
Thermal Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Melting Temperature | 177°C | ISO 11357-1/-3 |
| Glass Transition Temperature | 44°C | ISO 11357-1/-2 |
| HDT @ 1.80 MPa | 130°C | ISO 75-1/-2 |
| HDT @ 0.45 MPa | 170°C | ISO 75-1/-2 |
| Vicat Softening Temperature B | 170°C | ISO 306 |
| Flammability @ 1.6 mm | HB | IEC 60695-11-10 |
The reinforced PA12 structure provides VESTAMID L1930 BK 9.7503 with useful thermal performance for automotive and industrial precision components.
Electrical Properties
| Property | Typical Value (Dry / Conditioned) | Test Method |
|---|---|---|
| Relative Permittivity, 100 Hz | 4.2 / 5.3 | IEC 62631-2-1 |
| Relative Permittivity, 1 MHz | 3.5 / 3.5 | IEC 62631-2-1 |
| Dissipation Factor, 100 Hz | 360 / 860 × 10⁻⁴ | IEC 62631-2-1 |
| Dissipation Factor, 1 MHz | 340 / 460 × 10⁻⁴ | IEC 62631-2-1 |
| Volume Resistivity | 1 × 10¹³ / 1.5 × 10¹² Ω·m | IEC 62631-3-1 |
| Electric Strength | 48 / 45 kV/mm | IEC 60243-1 |
These figures confirm that VESTAMID L1930 BK 9.7503 is an electrically insulating reinforced PA12 grade rather than a conductive or antistatic material.
Why Choose VESTAMID L1930 BK 9.7503?
The main reason to choose VESTAMID L1930 BK 9.7503 is its low-warpage reinforcement concept.
Conventional chopped glass-fiber reinforced thermoplastics often show different shrinkage in the flow and transverse directions because the fibers become strongly oriented during injection molding. That anisotropy can produce distortion or warpage in precision parts.
The milled / specialty short glass fibers used in this grade reduce that directional difference. Published ISO data for the current grade lists approximately 0.5% shrinkage in both the parallel and normal directions, which is particularly attractive for precision gear wheels, housings and sensor components.
PA12’s low moisture uptake adds another advantage. Dimensional stability can remain more consistent when the component moves between different humidity conditions.
The material is also chemically resistant to fuels, oils and greases, making it well suited to automotive environments. For precision parts where balanced shrinkage matters more than achieving the maximum possible tensile modulus, VESTAMID L1930 BK 9.7503 can be a better choice than a conventional high-orientation PA12-GF30.
Processing Guidelines for VESTAMID L1930 BK 9.7503
VESTAMID L1930 BK 9.7503 is intended for injection molding. Evonik’s official VESTAMID processing guide lists a general processing-temperature range of approximately 240–280°C for VESTAMID L1930.
| Processing Item | Typical / Recommended Guidance |
|---|---|
| Primary Processing Method | Injection Molding |
| General Processing Temperature | Approx. 240–280°C |
| Published ISO Test Melt Temperature | Approx. 250°C |
| Published ISO Test Mold Temperature | Approx. 80°C |
| Published ISO Injection Velocity | Approx. 200 mm/s |
| Supply Condition | Dry pellets in moisture-proof packaging |
The grade is supplied as cylindrical pellets in moisture-proof packaging. Material from intact packaging is ready for processing. If granules have been exposed to ambient moisture after opening, drying should be performed according to Evonik’s general VESTAMID processing recommendations.
Because the compound contains 30% glass reinforcement, processing equipment should be appropriate for reinforced engineering plastics. Injection speed, gate geometry, holding pressure and mold temperature should be optimized for the specific part.
For low-warpage precision components, balanced filling is especially important. Gate position and flow path can still influence fiber orientation and final dimensions, so mold design and process consistency remain important even with the more isotropic reinforcement concept.
VESTAMID L1930 BK 9.7503 vs. VESTAMID L1833 BK 9.7623
| Feature | VESTAMID L1930 BK 9.7503 | VESTAMID L1833 BK 9.7623 |
|---|---|---|
| Base Polymer | PA12-GD30 | PA12-GF23 |
| Reinforcement | 30% milled / specialty short glass fiber | Approx. 23% glass fiber |
| Primary Advantage | Low warpage / balanced shrinkage | Easy mold release / higher stiffness |
| Tensile Modulus, Dry | Approx. 3,800 MPa | Approx. 5,500 MPa |
| Shrinkage Behavior | Approx. 0.5% / 0.5% | More directional |
| Main Application Focus | Precision gears and low-warpage components | Rigid precision injection-molded parts |
| Processing | Injection Molding | Injection Molding |
Choose VESTAMID L1930 BK 9.7503 when low warpage, balanced shrinkage and dimensional precision are the main priorities.
Choose VESTAMID L1833 BK 9.7623 when higher stiffness and easy mold release are more important for the application.
Related Products
VESTAMID L1833 BK 9.7623 – 23% glass fiber reinforced PA12 with easy mold release.
VESTAMID L1833 NC – Natural-color PA12-GF23 for rigid precision molded parts.
VESTAMID L-GF30 BK 9.7506 – 30% glass fiber reinforced PA12 for higher-stiffness structural applications.
View More PA12 Polyamide 12 Materials →
Technical Documents for VESTAMID L1930 BK 9.7503
| 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 documentation subject to availability |
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FAQ About VESTAMID L1930 BK 9.7503
Q1: What is VESTAMID L1930 BK 9.7503?
VESTAMID L1930 BK 9.7503 is a heat-stabilized PA12 compound reinforced with approximately 30% milled glass fiber. It is designed for injection molding of rigid, low-warpage precision components.
Q2: What does PA12-GD30 mean?
PA12 identifies polyamide 12. GD30 indicates a grade reinforced with approximately 30% milled / ground glass fiber, giving a different shrinkage and warpage profile from many conventional long-fiber PA12-GF30 compounds.
Q3: What are the main applications of VESTAMID L1930 BK 9.7503?
Typical applications include precision gears, steering-angle sensor components, automotive molded parts, industrial housings and other low-warpage precision components.
Q4: What is the density of VESTAMID L1930 BK 9.7503?
The typical density is approximately 1.24 g/cm³ according to ISO 1183.
Q5: What is the tensile modulus of VESTAMID L1930 BK 9.7503?
The current published typical tensile modulus is approximately 3,800 MPa dry and 2,970 MPa conditioned according to ISO 527.
Q6: Why is VESTAMID L1930 BK 9.7503 considered low warpage?
The grade uses specialty short / milled glass fibers that reduce the difference between longitudinal and transverse shrinkage. Current published data lists approximately 0.5% shrinkage in both directions.
Q7: What is the HDT of VESTAMID L1930 BK 9.7503?
The typical heat deflection temperature is approximately 130°C at 1.80 MPa and 170°C at 0.45 MPa.
Q8: What processing temperature is recommended for VESTAMID L1930 BK 9.7503?
Evonik’s processing guide lists approximately 240–280°C as the general processing range for VESTAMID L1930.
Q9: Is VESTAMID L1930 BK 9.7503 chemically resistant?
Yes. The PA12 base provides good resistance to fuels, oils, fats and many other chemicals, which is one reason the grade is used in automotive and industrial applications.
Q10: Can you provide VESTAMID L1930 BK 9.7503 TDS, SDS and COA?
Yes. Please request the required technical documents through our Contact Page → or email ruiqingchem@gmail.com.
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