描述
VESTAMID X7393 NC is a natural-color, high-viscosity, plasticized, impact-modified, heat- and light-stabilized polyamide 12 compound from Evonik Operations GmbH developed for semi-rigid automotive tubing and hose extrusion.
Evonik positions VESTAMID X7393 NC for flexible tubing and hoses used in the automotive industry according to DIN 73378 and DIN 74324, Type PA12-PHLY. The grade is engineered for applications that need more structural support and burst-pressure resistance than very soft tubing compounds while still retaining the routing, impact and chemical-resistance advantages of plasticized PA12.
The most important technical positioning of VESTAMID X7393 NC is its combination of optimized cold-temperature impact resistance and increased burst-pressure resistance. This is why the grade is especially relevant for semi-rigid automotive lines, pneumatic tubing, air-brake-related systems and other technical lines where wall stability under pressure matters.
The natural-color format also gives processors more freedom when downstream coloration or application-specific identification is required. Evonik notes that colorants can affect material properties, so final qualification should always use the selected production color formulation.
The current Material Data Center classifies VESTAMID X7393 NC as PA12-I. The product description simultaneously identifies X7393 as a high-viscosity, plasticized and impact-modified PA12 tubing compound and references PA12-PHLY for the DIN tubing application. For this reason, the product page retains the requested commercial designation (PA12-P)-I while also showing the current database classification transparently.
Current grade-specific data lists an MVR of approximately 8.5 cm³/10 min at 230°C / 5 kg, confirming the high-viscosity extrusion character of the grade.
The dry tensile modulus is approximately 520 MPa, with a conditioned value around 470 MPa. Yield stress is approximately 29 MPa dry and 27 MPa conditioned, while yield strain is approximately 28%.
These values place VESTAMID X7393 NC between very soft flexible tubing compounds and rigid unplasticized PA12. The material remains ductile while providing useful stiffness for pressure tubing.
Low-temperature impact performance is a key strength. Unnotched Charpy specimens show no break at both 23°C and -30°C. Notched Charpy impact is approximately 108 kJ/m² dry and 130 kJ/m² conditioned at 23°C, and approximately 7 / 8 kJ/m² at -30°C.
The material has a Shore D hardness of approximately 67, a melting temperature around 177°C, a glass-transition temperature around 15°C, HDT of approximately 45°C at 1.80 MPa and 110°C at 0.45 MPa, and Vicat B softening temperature around 125°C.
Moisture absorption remains low. Current data lists approximately 1.2% water absorption and 0.7% humidity absorption. This low moisture sensitivity is one of the reasons PA12 is widely used for automotive tubing: mechanical and dimensional properties change relatively little as humidity varies.
Evonik also specifically identifies X7393 as having an exceptionally low coefficient of friction and good chemical resistance, which are useful for automotive line routing, installation and long-term exposure to technical fluids.
For more PA12 materials, visit our PA12 Polyamide 12 Product Category →.
For official manufacturer information about automotive PA12 line systems, visit the Evonik VESTAMID Fuel-Line Systems Page →.
Key Features of VESTAMID X7393 NC
| Feature | Engineering Benefit |
|---|---|
| High Viscosity | Provides stable melt behavior for pipe and tube extrusion |
| Plasticized PA12 | Retains useful flexibility for line routing |
| Impact Modified | Supports low-temperature toughness and impact resistance |
| Heat Stabilized | Helps maintain long-term performance in automotive environments |
| Light Stabilized | Supports technical service under light exposure |
| Semi-Rigid Tubing Grade | Provides more structural support than softer flexible PA12 compounds |
| Increased Burst-Pressure Resistance | Core reason for selecting X7393 in pressure tubing |
| Excellent Cold Impact | Unnotched Charpy shows no break at -30°C |
| Low Coefficient of Friction | Supports assembly, routing and dynamic contact |
| Low Moisture Absorption | Helps maintain dimensional and mechanical stability |
| General Chemical Resistance | Supports demanding automotive and industrial line environments |
| Natural Color | Allows downstream coloration or visual identification |
The strongest engineering advantage of VESTAMID X7393 NC is the balance of semi-rigid stiffness, cold-impact durability and pressure-tube capability.
Typical Applications for VESTAMID X7393 NC
VESTAMID X7393 NC is primarily intended for semi-rigid tube and hose systems in automotive and industrial applications.
| Application Area | Typical Use |
|---|---|
| Automotive Pneumatic Tubing | Semi-rigid compressed-air and control lines |
| Air-Brake Related Tubing | PA12 line systems designed around relevant DIN requirements |
| Automotive Fluid Lines | Semi-rigid routed technical tubing |
| Vacuum Lines | Automotive vacuum and control tubing |
| Fuel-Related Tubing | Selected fuel and return-line systems after application qualification |
| Industrial Pneumatic Lines | Semi-rigid chemical-resistant PA12 tubing |
| Control Lines | Lines requiring dimensional stability and pressure resistance |
| Technical Hose | Semi-rigid hose where cold impact and low friction are important |
| Profile Extrusion | Technical semi-rigid profiles where the same PA12 property balance is useful |
The grade is especially relevant where a softer material such as X7293 is too flexible but a rigid unplasticized PA12 would be unnecessarily stiff.
Typical Properties of VESTAMID X7393 NC
Physical & Rheological Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 1.02 g/cm³ | ISO 1183 |
| Water Absorption | 1.2% | Similar to ISO 62 |
| Humidity Absorption | 0.7% | Similar to ISO 62 |
| MVR | 8.5 cm³/10 min | ISO 1133 |
| MVR Condition | 230°C / 5 kg | ISO 1133 |
| Molding Shrinkage – Parallel | 0.8% | ISO 294-4 / 2577 |
| Molding Shrinkage – Normal | 1.4% | ISO 294-4 / 2577 |
| Delivery Form | Pellets | Manufacturer information |
| Color | Natural Color | Manufacturer information |
The MVR of 8.5 cm³/10 min at 230°C / 5 kg should always be quoted together with its test condition. MVR values measured at different temperatures or loads cannot be compared directly.
Mechanical Properties
| Property | Dry / Conditioned | Test Method |
|---|---|---|
| Tensile Modulus | 520 / 470 MPa | ISO 527 |
| Yield Stress | 29 / 27 MPa | ISO 527 |
| Yield Strain | 28 / 28% | ISO 527 |
| Nominal Strain at Break | >50 / >50% | ISO 527 |
| Charpy Impact, 23°C | No Break / No Break | ISO 179/1eU |
| Charpy Impact, -30°C | No Break / No Break | ISO 179/1eU |
| Charpy Notched Impact, 23°C | 108 / 130 kJ/m² | ISO 179/1eA |
| Charpy Notched Impact, -30°C | 7 / 8 kJ/m² | ISO 179/1eA |
| Shore D Hardness | 67 | ISO 7619-1 |
The combination of approximately 520 MPa dry tensile modulus and no-break unnotched Charpy performance at -30°C explains the semi-rigid but cold-tough positioning of VESTAMID X7393 NC.
Thermal Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Melting Temperature | 177°C | ISO 11357-1/-3 |
| Glass Transition Temperature | 15°C | ISO 11357-1/-2 |
| HDT @ 1.80 MPa | 45°C | ISO 75-1/-2 |
| HDT @ 0.45 MPa | 110°C | ISO 75-1/-2 |
| Vicat Softening Temperature B | 125°C | ISO 306 |
These standardized thermal values are resin data. The final allowable operating temperature of a tube should be defined from the tube geometry, internal pressure, fluid, safety factor and applicable OEM or regulatory standard.
Electrical Data Status
The current open grade-specific Material Data Center page for VESTAMID X7393 NC does not publish a complete electrical-property table.
For technical accuracy, electrical values from the black X7393 BK 9.7507 formulation have not been copied into this NC page. Colorants and formulation details can affect properties, and Evonik itself notes that pigmentation may affect values.
If electrical properties such as volume resistivity, CTI or dielectric strength are required for a project, request the latest current TDS or manufacturer confirmation for VESTAMID X7393 NC.
Why Choose VESTAMID X7393 NC?
The main reason to select VESTAMID X7393 NC is that it provides a useful middle ground between highly flexible tubing compounds and rigid PA12.
For pressure tubing, wall stiffness matters because internal pressure tries to expand the tube. A very soft compound may be easy to route but can require a thicker wall or may provide less burst-pressure margin.
A rigid unplasticized PA12 can increase stiffness, but it may reduce the flexibility needed for vehicle installation.
VESTAMID X7393 NC addresses this balance with a plasticized, impact-modified formulation that still provides a dry modulus of approximately 520 MPa.
The grade is specifically described by Evonik as providing increased burst-pressure resistance, making this feature more than a generic PA12 benefit.
Low-temperature impact performance is equally important. Vehicle tubing may be installed or operated in winter conditions. The no-break Charpy result at -30°C demonstrates the toughness needed for these environments.
Low moisture absorption is another major advantage. Because the resin absorbs relatively little water, stiffness and dimensions change less with humidity than in many PA6 or PA66 materials.
The low coefficient of friction simplifies tube routing through clips and guides and can reduce abrasion during installation.
Chemical resistance supports contact with common automotive and industrial environments, although actual fluid compatibility should always be confirmed under the intended temperature, pressure and exposure duration.
The natural-color format is another practical advantage. Customers can use the base resin for application-specific color identification rather than starting from a black compound.
For customers looking for a natural-color, semi-rigid, pressure-oriented PA12 tubing compound, VESTAMID X7393 NC is therefore a highly targeted material.
Processing Guidelines for VESTAMID X7393 NC
VESTAMID X7393 NC is primarily listed for pipe/tube extrusion.
Current grade-specific standardized specimen conditions are:
| Processing Parameter | Published Value |
|---|---|
| ISO Test Melt Temperature | 220°C |
| ISO Test Mold Temperature | 60°C |
| ISO Test Injection Velocity | 200 mm/s |
| MVR Test Temperature | 230°C |
| MVR Test Load | 5 kg |
The 220°C / 60°C / 200 mm/s values are standardized ISO test-specimen conditions, not a complete production tube-extrusion recipe.
For commercial tube extrusion, optimize:
- Barrel-zone temperatures
- Adapter temperature
- Die temperature
- Screw speed
- Melt pressure
- Residence time
- Line speed
- Tube outside diameter
- Wall thickness
- Draw-down ratio
- Vacuum sizing
- Cooling-water temperature
- Ovality
- Surface finish
- Burst pressure
- Cold-impact performance
Evonik states that VESTAMID X7393 NC is supplied ready for use in moisture-proof bags. In original undamaged packaging, shelf life is at least two years when stored dry at temperatures not exceeding 30°C.
If the packaging has been damaged or the pellets have absorbed ambient moisture, follow the latest Evonik VESTAMID PA12 drying recommendations before extrusion.
VESTAMID X7393 NC vs. VESTAMID X7393 BK 9.7507
| Feature | VESTAMID X7393 NC | VESTAMID X7393 BK 9.7507 |
|---|---|---|
| Base Polymer | Plasticized impact-modified PA12 | Plasticized impact-modified PA12 |
| Color | Natural Color | Black |
| Main Application | Semi-rigid automotive tubing | Semi-rigid automotive tubing |
| MVR | 8.5 cm³/10 min @230°C/5 kg | 8 cm³/10 min @230°C/5 kg |
| Tensile Modulus | 520 / 470 MPa | 560 / 495 MPa |
| Yield Stress | 29 / 27 MPa | 31 / 28 MPa |
| Notched Charpy, 23°C | 108 / 130 kJ/m² | 115 / 124 kJ/m² |
| Notched Charpy, -30°C | 7 / 8 kJ/m² | 8 / 8 kJ/m² |
| Melting Temperature | 177°C | 173°C |
| Tg | 15°C | 24°C |
| HDT @ 0.45 MPa | 110°C | 115°C |
| Vicat B | 125°C | 130°C |
| Main Selection Reason | Natural-color formulation / downstream coloration | Ready-to-use black stabilized formulation |
Both grades share the same X7393 application concept, but pigmentation can affect property values. Therefore, use the property table for the exact color grade rather than assuming NC and BK are numerically identical.
Choose VESTAMID X7393 NC when the natural-color formulation or downstream coloration is required.
Choose VESTAMID X7393 BK 9.7507 when the customer specifies the black formulation.
Related Products
VESTAMID X7393 BK 9.7507 – Black semi-rigid plasticized impact-modified PA12 for tubing with increased burst-pressure resistance.
VESTAMID X7293 NC – Natural-color flexible PA12 tubing grade with lower stiffness and greater routing flexibility.
VESTAMID X7293 BK 9.7507 – Black flexible automotive tubing and hose grade.
View More PA12 Polyamide 12 Materials →
Technical Documents for VESTAMID X7393 NC
| Document Type | Description |
|---|---|
| TDS | Current physical, rheological, mechanical and thermal data |
| SDS | Safety Data Sheet |
| Automotive Tubing Information | DIN 73378 / DIN 74324 application context |
| Processing Guide | VESTAMID PA12 extrusion, moisture handling and processing recommendations |
| COA | Batch-specific quality information where available |
| Application Support | Tube-wall design, burst-pressure and low-temperature evaluation |
Need technical documents for VESTAMID X7393 NC?
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FAQ About VESTAMID X7393 NC
Q1: What is VESTAMID X7393 NC?
VESTAMID X7393 NC is a natural-color, high-viscosity, plasticized, impact-modified, heat- and light-stabilized PA12 from Evonik for semi-rigid automotive tubing and hose extrusion.
Q2: What does the NC designation mean?
NC indicates the natural-color formulation. It is useful where downstream coloration or a non-black finished tube is required.
Q3: What automotive tubing standards are associated with VESTAMID X7393 NC?
Evonik identifies X7393 for applications according to DIN 73378 and DIN 74324, Type PA12-PHLY.
Q4: What is the main advantage of VESTAMID X7393 NC?
The grade is specifically characterized by optimized cold-temperature impact resistance and increased burst-pressure resistance for semi-rigid tubing.
Q5: What is the density?
The typical density is approximately 1.02 g/cm³.
Q6: What is the tensile modulus?
The current tensile modulus is approximately 520 MPa dry and 470 MPa conditioned.
Q7: How does VESTAMID X7393 NC perform at low temperature?
Unnotched Charpy specimens show no break at -30°C. Notched Charpy impact is approximately 7 kJ/m² dry and 8 kJ/m² conditioned at -30°C.
Q8: What is the MVR?
The current MVR is approximately 8.5 cm³/10 min at 230°C / 5 kg.
Q9: What is the difference between VESTAMID X7393 NC and X7393 BK 9.7507?
The core application is the same, but NC is natural color and BK is black. Their published property values differ slightly, and Evonik notes that pigmentation may affect material properties.
Q10: Can you provide VESTAMID X7393 NC TDS and SDS?
Yes. Please request the latest documents through our Contact Page → or email ruiqingchem@gmail.com.
Request VESTAMID X7393 NC Price & Technical Support
For pricing, availability, technical documents or application support for VESTAMID X7393 NC, please provide:
- Required quantity
- Destination country or port
- Automotive, pneumatic or industrial tube application
- Tube outside diameter
- Wall thickness
- Minimum bend radius
- Working pressure
- Required burst pressure
- Continuous and peak operating temperature
- Minimum cold-impact temperature
- Fluid or chemical medium
- Required finished color
- DIN / OEM requirement
- Extrusion-line information
- TDS, SDS or COA requirement
- Sample requirement, if applicable
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