描述
VESTAMID LX9041 BK 9.7504 is a black, medium-viscosity, heat- and light-stabilized polyamide 12 compound from Evonik Operations GmbH developed especially for the extrusion coating of steel tubes.
Its commercial positioning is highly application-specific. This is not simply a general-purpose PA12 molding resin. Evonik designed VESTAMID LX9041 BK 9.7504 so that the coating combines the inherent toughness of PA12 with good adhesion to a properly prepared steel substrate.
That combination is important because a protective tube coating must do more than cover the metal. It must remain attached during handling, bending, vibration and service exposure. The current product description states that the excellent adhesion between the steel and properly applied VESTAMID coating, together with PA12 impact strength, abrasion resistance and chemical resistance, significantly increases the corrosion resistance of coated steel tubes.
The grade is classified as medium viscosity. Current data lists a melt volume-flow rate of approximately 17 cm³/10 min at 240°C / 2.16 kg. This flow level gives the resin a useful balance between processability and melt strength for coating operations.
Mechanical toughness is also strong. Dry tensile modulus is approximately 1,730 MPa, while conditioned modulus is approximately 1,370 MPa. Yield stress is approximately 51 MPa dry and 44 MPa conditioned. Unnotched Charpy specimens show no break at both 23°C and -30°C.
Moisture uptake remains low, which is a characteristic advantage of PA12. Current data lists approximately 1.3% water absorption and 0.7% humidity absorption. This helps the polymer retain relatively stable dimensions and mechanical behavior under changing ambient humidity.
The grade is supplied as black cylindrical granules in moisture-proof bags and is ready for processing. Evonik states a shelf life of at least two years in original, undamaged packaging stored dry at temperatures not exceeding 30°C.
For more PA12 products, visit our PA12 Polyamide 12 Product Category →.
For official manufacturer information about the VESTAMID family, visit the Evonik VESTAMID Product Page →.
Key Features of VESTAMID LX9041 BK 9.7504
| Feature | Benefit |
|---|---|
| Medium Viscosity | Balances coating flow with melt strength |
| Steel-Tube Coating Grade | Developed specifically for extrusion coating of steel tubes |
| Good Adhesion | Supports durable bonding to properly prepared steel |
| Heat Stabilized | Supports demanding processing and service conditions |
| Light Stabilized | Helps maintain material performance under light exposure |
| High Impact Strength | Helps the coating withstand handling, vibration and mechanical shock |
| Abrasion Resistance | Protects the coated tube surface against wear |
| General Chemical Resistance | Supports industrial and automotive service environments |
| Low Water Absorption | Helps reduce humidity-related dimensional changes |
| Dimensional Stability | Supports consistent protective-layer performance |
| Corrosion-Protection Function | Helps improve corrosion resistance of coated steel tubing |
| Black Color | Supplied as a ready-colored black compound |
The defining advantage of VESTAMID LX9041 BK 9.7504 is the combination of PA12 toughness with adhesion to metal.
Typical Applications for VESTAMID LX9041 BK 9.7504
VESTAMID LX9041 BK 9.7504 is primarily intended for protective coating of steel tubing.
| Application Area | Typical Use |
|---|---|
| Steel Tube Extrusion Coating | Protective PA12 outer layers on steel tubing |
| Automotive Metal Tubing | Coated steel lines requiring abrasion and corrosion resistance |
| Industrial Steel Tubes | Protective polymer coatings for technical tube systems |
| Metal Tube Corrosion Protection | Barrier layer against environmental exposure |
| Mechanical Tube Protection | Coatings exposed to impact, vibration and abrasion |
| Engineering Tube Systems | Coated tubing requiring good chemical resistance |
| Construction / Industrial Components | Selected coated metal-tube applications |
The current Evonik description specifically identifies coating as the processing route, so steel-tube extrusion coating should remain the main application focus of the product page.
Typical Properties of VESTAMID LX9041 BK 9.7504
Physical & Rheological Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 1.02 g/cm³ | ISO 1183 |
| Water Absorption | 1.3% | Similar to ISO 62 |
| Humidity Absorption | 0.7% | Similar to ISO 62 |
| Melt Volume-Flow Rate (MVR) | 17 cm³/10 min | ISO 1133 |
| MVR Test Condition | 240°C / 2.16 kg | — |
| Molding Shrinkage – Parallel | 1.1% | ISO 294-4 / 2577 |
| Molding Shrinkage – Normal | 1.1% | ISO 294-4 / 2577 |
| Delivery Form | Black cylindrical pellets | Manufacturer information |
Mechanical Properties
| Property | Typical Value (Dry / Conditioned) | Test Method |
|---|---|---|
| Tensile Modulus | 1,730 / 1,370 MPa | ISO 527 |
| Yield Stress | 51 / 44 MPa | ISO 527 |
| Yield Strain | 4 / 12% | 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 | 4 / 3.5 kJ/m² | ISO 179/1eA |
| Charpy Notched Impact, -30°C | 4.3 / 4 kJ/m² | ISO 179/1eA |
Thermal & Flammability 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 | 48°C | ISO 75-1/-2 |
| HDT @ 0.45 MPa | 120°C | ISO 75-1/-2 |
| Vicat Softening Temperature B | 141°C | ISO 306 |
| Flammability @ 1.6 mm | HB | IEC 60695-11-10 |
Electrical Properties
| Property | Typical Value (Dry / Conditioned) | Test Method |
|---|---|---|
| Relative Permittivity, 100 Hz | 3.7 / 4.4 | IEC 62631-2-1 |
| Relative Permittivity, 1 MHz | 3.1 / 3.2 | IEC 62631-2-1 |
| Dissipation Factor, 100 Hz | 330 / 610 × 10⁻⁴ | IEC 62631-2-1 |
| Dissipation Factor, 1 MHz | 195 / 363 × 10⁻⁴ | IEC 62631-2-1 |
| Volume Resistivity | 9.3 × 10¹² / 4.9 × 10¹² Ω·m | IEC 62631-3-1 |
Why Choose VESTAMID LX9041 BK 9.7504?
The main reason to choose VESTAMID LX9041 BK 9.7504 is its combination of metal adhesion and PA12 durability.
A coating on a steel tube is only useful if it remains attached. Delamination can expose the substrate, reduce corrosion protection and create local failure points.
Evonik specifically identifies good adhesion as a key feature of LX9041. When the steel surface is properly prepared and the material is correctly applied, the PA12 coating forms a durable protective layer.
The polymer itself adds several useful performance benefits. PA12 is impact resistant, abrasion resistant and chemically resistant. It also absorbs relatively little moisture, so the coating is less sensitive to humidity-driven dimensional changes than many other polyamides.
The medium-viscosity design gives LX9041 a different processing profile from high-viscosity steel-coating grades. This can be useful where somewhat greater flow is desirable while still maintaining enough melt strength for coating.
Another advantage is balanced shrinkage. The published 1.1% parallel and 1.1% normal shrinkage provides a useful indication of isotropic dimensional behavior in standardized molded specimens.
Processing Guidelines for VESTAMID LX9041 BK 9.7504
VESTAMID LX9041 BK 9.7504 is developed primarily for coating, especially extrusion coating of steel tubes.
| Processing Item | Published Condition |
|---|---|
| Primary Processing | Coating / Steel-Tube Extrusion Coating |
| ISO Test Melt Temperature | 240°C |
| ISO Test Mold Temperature | 60°C |
| ISO Test Injection Velocity | 200 mm/s |
| MVR Test Condition | 240°C / 2.16 kg |
| Supply Form | Black cylindrical pellets |
| Packaging | Moisture-proof bags |
| Shelf Life | At least 2 years in original undamaged packaging at ≤30°C |
The 240°C melt temperature and 60°C mold temperature above are standardized injection-molding test conditions. They should not be copied directly as a universal steel-tube coating recipe.
For actual extrusion coating, optimize barrel and die temperature, tube preheating, steel surface cleanliness, line speed, coating thickness, die centering, cooling and adhesion testing.
Surface preparation is especially important because the current product description attributes the corrosion-protection benefit to good adhesion between the steel and properly applied VESTAMID material.
VESTAMID LX9041 BK 9.7504 vs. VESTAMID LX9001 BK 9.7504
| Feature | VESTAMID LX9041 BK 9.7504 | VESTAMID LX9001 BK 9.7504 |
|---|---|---|
| Base Polymer | PA12 | PA12 |
| Color | Black | Black |
| Primary Application | Steel-tube extrusion coating | Steel-tube extrusion coating |
| Viscosity Positioning | Medium Viscosity | High Viscosity |
| Heat / Light Stabilized | Yes | Yes |
| Good Steel Adhesion | Yes | Yes |
| MVR | 17 cm³/10 min @ 240°C / 2.16 kg | 13 cm³/10 min @ 230°C / 5 kg |
| Tensile Modulus, Dry | Approx. 1,730 MPa | Approx. 1,650 MPa |
| Main Selection Reason | Medium-viscosity coating processability | Higher-viscosity coating profile |
The MVR values use different test conditions, so they should not be compared numerically as a direct viscosity ranking. The manufacturer positioning is the more reliable distinction.
Choose VESTAMID LX9041 BK 9.7504 when a medium-viscosity steel-coating grade is preferred.
Choose VESTAMID LX9001 BK 9.7504 when a high-viscosity coating grade is required.
Related Products
VESTAMID LX9001 BK 9.7504 – High-viscosity PA12 for extrusion coating of steel tubes.
VESTAMID L2140 BK 9.7504 – High-viscosity PA12 for fuel lines, tubing and general technical extrusion.
VESTAMID L2141 BK 9.7504 – High-viscosity PA12 with enhanced heat stabilization for demanding tubing.
View More PA12 Polyamide 12 Materials →
Technical Documents for VESTAMID LX9041 BK 9.7504
| Document Type | Description |
|---|---|
| TDS | Grade-specific physical, mechanical, thermal, electrical and rheological data |
| SDS | Safety Data Sheet |
| COA | Batch-specific Certificate of Analysis where available |
| Processing Guide | General VESTAMID processing recommendations |
| Chemical Resistance Data | PA12 resistance information for relevant service media |
| Application Support | Steel-tube coating and adhesion evaluation |
Need technical documents for VESTAMID LX9041 BK 9.7504?
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FAQ About VESTAMID LX9041 BK 9.7504
Q1: What is VESTAMID LX9041 BK 9.7504?
VESTAMID LX9041 BK 9.7504 is a black, medium-viscosity, heat- and light-stabilized PA12 from Evonik developed especially for extrusion coating of steel tubes.
Q2: What is the main application of VESTAMID LX9041 BK 9.7504?
Its main application is steel-tube extrusion coating, where the PA12 layer provides adhesion, abrasion resistance, impact resistance and corrosion protection.
Q3: What is the MVR of VESTAMID LX9041 BK 9.7504?
The current typical MVR is approximately 17 cm³/10 min at 240°C / 2.16 kg according to ISO 1133.
Q4: What is the density of VESTAMID LX9041 BK 9.7504?
The typical density is approximately 1.02 g/cm³ according to ISO 1183.
Q5: What is the tensile modulus of VESTAMID LX9041 BK 9.7504?
The typical tensile modulus is approximately 1,730 MPa dry and 1,370 MPa conditioned.
Q6: What is the melting temperature?
The typical melting temperature is approximately 177°C according to ISO 11357.
Q7: Does VESTAMID LX9041 BK 9.7504 absorb much water?
No. Current data lists approximately 1.3% water absorption and 0.7% humidity absorption.
Q8: Does VESTAMID LX9041 BK 9.7504 adhere to steel?
Yes. Good adhesion to properly prepared steel is one of the key grade features identified by Evonik.
Q9: What is the difference between LX9041 and LX9001?
Both are black PA12 grades for steel-tube coating. LX9041 is positioned as medium viscosity, while LX9001 is positioned as high viscosity.
Q10: Can you provide VESTAMID LX9041 BK 9.7504 TDS, SDS and COA?
Yes. Please request the required documents through our Contact Page → or email ruiqingchem@gmail.com.
Request VESTAMID LX9041 BK 9.7504 Price & Technical Support
For pricing, availability, technical documents or material-selection support for VESTAMID LX9041 BK 9.7504, please provide:
- Required quantity
- Destination country or port
- Steel-tube application
- Tube outside diameter
- Required coating thickness
- Steel grade and surface-preparation method
- Service environment
- Chemical, oil or fuel exposure
- Operating temperature
- Extrusion-coating line information
- Adhesion and corrosion-test requirements
- TDS, SDS or COA requirements
- Sample requirement, if applicable
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