描述
VESTAMID X7293 NC is a natural-color, high-viscosity, plasticized, impact-modified, heat- and light-stabilized polyamide 12 compound from Evonik Operations GmbH developed for flexible tubing and hose extrusion, especially in automotive applications.
The grade is specifically aligned with important automotive tubing standards. Evonik identifies VESTAMID X7293 NC for applications according to DIN 73378, PA12-HIPHL Type 1, ISO/DIN 7628-1, PA12-HIPEHL Type 1, and SAE J844.
These classifications are useful because they describe more than the polymer family. They indicate a PA12 formulation engineered for a combination of high impact resistance, plasticization, heat stabilization and light stabilization.
The natural-color grade is particularly useful when the customer wants to apply downstream coloration, use identification colors, or manufacture tubing where black pigmentation is not required.
A major advantage of VESTAMID X7293 NC is its balance of flexibility and impact strength. Current grade-specific data shows a dry tensile modulus of approximately 390 MPa, yield stress around 25 MPa, stress at break around 41 MPa, and nominal strain at break approximately 235%.
This mechanical profile confirms that the material is designed as a highly ductile tubing compound rather than as a rigid structural PA12.
Low-temperature toughness is one of the strongest features. Current ISO Charpy data shows no break at 23°C, 0°C, -20°C and -30°C in the unnotched test. The current pipe-specific SAE J844 data also records zero breaks out of ten specimens at -40°C after both boiling-water conditioning and 110°C heat pretreatment.
That pipe-specific cold-impact result is especially valuable for automotive applications because tubing can experience severe cold during vehicle storage and operation.
PA12 also offers much lower moisture sensitivity than shorter-chain polyamides. Current grade data lists approximately 0.7% humidity absorption, helping tube dimensions and mechanical properties remain relatively stable as ambient humidity changes.
Another major advantage is chemical resistance. Current grade information includes testing against motor oil, insulating oil, ISO reference fuels, alcohol-containing fuels, diesel, Diesel EN 590, methanol, ethanol, iso-octane, toluene, DOT 4 brake fluid, salt solutions and water.
The grade is also characterized by a low coefficient of friction and general chemical resistance, both of which are useful in routed automotive lines and moving assemblies.
Current pipe data further shows a burst hoop stress of approximately 24.5 MPa at 23°C in water and approximately 10.5 MPa at 100°C in oil under the historical DIN 53758 test method. These values help illustrate the pressure-tube capability of the compound.
For additional PA12 materials, visit our PA12 Polyamide 12 Product Category →.
For official automotive fuel-line information, see the Evonik VESTAMID Fuel-Line Systems Page →.
Key Features of VESTAMID X7293 NC
| Feature | Engineering Benefit |
|---|---|
| High Viscosity | Supports stable flexible-tube and hose extrusion |
| Plasticized PA12 | Provides flexibility and routing capability |
| Impact Modified | Improves resistance to impact and cold-weather damage |
| Heat Stabilized | Supports automotive thermal environments |
| Light Stabilized | Helps maintain long-term performance during light exposure |
| Excellent Low-Temperature Impact | No-break Charpy behavior down to -30°C and SAE J844 tube testing at -40°C |
| Low Moisture Sensitivity | Helps maintain dimensions and mechanical consistency |
| Oil / Fuel Resistance | Important for automotive fluid and fuel lines |
| Low Coefficient of Friction | Useful for routing, assembly and tube movement |
| General Chemical Resistance | Supports exposure to multiple automotive fluids |
| DIN / ISO / SAE Positioning | Developed around recognized tubing standards |
| Natural Color | Suitable for downstream coloration or identification systems |
The strongest reason to specify VESTAMID X7293 NC is the combination of flexibility, low-temperature toughness and automotive-fluid resistance.
Typical Applications for VESTAMID X7293 NC
VESTAMID X7293 NC is intended primarily for flexible tubing and hose systems.
| Application Area | Typical Use |
|---|---|
| Automotive Flexible Tubing | General vehicle fluid and pneumatic lines |
| Diesel Fuel Lines | PA12 tubing for diesel transport |
| Fuel Return Lines | Low-pressure return circuits |
| Pneumatic Brake Tubing | Applications designed around SAE J844 or related requirements |
| Air Lines | Flexible compressed-air tubing |
| SCR / AdBlue Lines | Selected urea-solution line applications after qualification |
| Oil & Lubricant Lines | Tubing exposed to automotive oils and lubricants |
| Brake-Fluid Related Components | Applications exposed to DOT 4 fluid after system validation |
| Industrial Flexible Hose | Chemical-resistant PA12 hose and tubing |
| Profile Extrusion | Flexible technical profiles |
Evonik’s automotive literature identifies VESTAMID PA12 as one of the most widely used material families for vehicle line systems because of its low-temperature impact strength, chemical resistance and long-term tubing experience.
Typical Properties of VESTAMID X7293 NC
Physical & Rheological Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 1.02 g/cm³ | ISO 1183 |
| Humidity Absorption | 0.7% | Similar to ISO 62 |
| MVR | 26 cm³/10 min | ISO 1133 |
| MVR Condition | 220°C / 10 kg | ISO 1133 |
| Molding Shrinkage – Parallel | 0.7% | ISO 294-4 / 2577 |
| Molding Shrinkage – Normal | 1.4% | ISO 294-4 / 2577 |
| Structure | Semi-crystalline | Manufacturer information |
| Color | Natural Color | Manufacturer information |
The MVR value must always be quoted together with its test condition. It should not be compared directly with another X7293 color grade if the test temperature or load is different.
Mechanical Properties
| Property | Typical Dry Value | Test Method |
|---|---|---|
| Tensile Modulus | 390 MPa | ISO 527 |
| Tensile Strength | 25 MPa | ISO 527 |
| Yield Stress | 25 MPa | ISO 527 |
| Yield Strain | 36% | ISO 527 |
| Stress at 50% Strain | 26 MPa | ISO 527 |
| Stress at Break | 41 MPa | ISO 527 |
| Nominal Strain at Break | 235% | ISO 527 |
| Charpy Impact, 23°C | No Break | ISO 179/1eU |
| Charpy Impact, 0°C | No Break | ISO 179/1eU |
| Charpy Impact, -20°C | No Break | ISO 179/1eU |
| Charpy Impact, -30°C | No Break | ISO 179/1eU |
| Charpy Notched Impact, 23°C | 130 kJ/m² | ISO 179/1eA |
| Charpy Notched Impact, -30°C | 7 kJ/m² | ISO 179/1eA |
| Flexural Modulus, 23°C | 400 MPa | ISO 178 |
| Flexural Strength, 23°C | 22 MPa | ISO 178 |
These values show that VESTAMID X7293 NC combines very high elongation with strong low-temperature impact performance.
Thermal Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Melting Temperature | 172°C | ISO 11357-1/-3 |
| Glass Transition Temperature | 8°C | ISO 11357-1/-2 |
| HDT @ 1.80 MPa | 45°C | ISO 75-1/-2 |
| HDT @ 0.45 MPa | 100°C | ISO 75-1/-2 |
| Vicat Softening Temperature A | 167°C | ISO 306 |
| Vicat Softening Temperature B | 130°C | ISO 306 |
| CTE, Parallel | 180 × 10⁻⁶/K | ISO 11359-1/-2 |
| CTE, Normal | 180 × 10⁻⁶/K | ISO 11359-1/-2 |
| Flammability @ 1.6 mm | HB | IEC 60695-11-10 |
The relatively low glass-transition temperature reflects the plasticized character of the compound and supports flexibility at low temperature.
Electrical Properties
| Property | Typical Dry Value | Test Method |
|---|---|---|
| Volume Resistivity | 1 × 10¹⁰ Ω·m | IEC 62631-3-1 |
| Relative Permittivity, 100 Hz | 11 | IEC 62631-2-1 |
| Relative Permittivity, 1 MHz | 4.6 | IEC 62631-2-1 |
| Dissipation Factor, 100 Hz | 0.20 | IEC 62631-2-1 |
| Dissipation Factor, 1 MHz | 0.19 | IEC 62631-2-1 |
| Dielectric Strength | 30 kV/mm | Similar to IEC 60243-1 |
| Comparative Tracking Index | 600 | IEC 60112 |
| Insulation Group | I | DIN EN 60664-1 |
Electrical properties are secondary to the tubing application but can be relevant where tubes are routed near electrical or electronic systems.
Pipe-Specific Properties
| Property | Published Value | Test Method |
|---|---|---|
| Cold Impact, -40°C, after 2 h boiling water | 0 breaks / 10 | SAE J844 |
| Tube Dimension for Test | 6 × 1 mm | SAE J844 |
| Cold Impact, -40°C, after 24 h at 110°C | 0 breaks / 10 | SAE J844 |
| Burst Hoop Stress, 23°C, Water | 24.5 MPa | DIN 53758, historical |
| Burst Hoop Stress, 100°C, Oil | 10.5 MPa | DIN 53758, historical |
These tube-specific data points are especially useful because VESTAMID X7293 NC is an extrusion grade whose real application is flexible tubing rather than only molded ISO test bars.
Sustainability Data
| LCA Property | Published Value | Standard |
|---|---|---|
| LCA Certificate | VESTAMID L Compound medium | ISO 14040 / 14044 |
| LCA Certifier | TÜV Rheinland | ISO 14040 / 14044 |
| Blue Water Consumption | 25.6 kg | ISO 14040 / 14044 |
| GWP incl. Biogenic Carbon incl. LUC | 6.0 kg CO₂ eq./kg | ISO 14040 / 14044 |
| GWP excl. Biogenic Carbon incl. LUC | 6.0 kg CO₂ eq./kg | ISO 14040 / 14044 |
| GWP Saving vs. 2023 Reference | 2.4 kg CO₂ eq./kg lower | ISO 14040 / 14044 |
Why Choose VESTAMID X7293 NC?
The main reason to choose VESTAMID X7293 NC is its combination of high flexibility, low-temperature toughness and chemical resistance.
Automotive tubing is exposed to repeated bending, vibration and thermal cycling. A line can be routed through tight spaces, clipped to moving assemblies and exposed to impact during vehicle use or service.
The 235% nominal strain at break of VESTAMID X7293 NC demonstrates the high ductility required for this kind of application.
Low-temperature performance is equally important. Many tubing materials become more brittle as temperature falls. X7293 NC retains no-break unnotched Charpy behavior down to -30°C, and the SAE J844 tube test shows zero breaks at -40°C after demanding pretreatments.
The PA12 base resin also keeps moisture absorption low. This helps tube dimensions and flexibility remain more stable than in more hygroscopic PA6 or PA66 systems.
Fuel and oil resistance are another major advantage. The current grade-specific dataset includes diesel, alcohol-containing fuels, motor oil, brake fluid and multiple hydrocarbon test media.
The natural-color format also creates flexibility for customers who want to compound or identify tubing in colors other than black.
For customers requiring a proven PA12-HIPHL / PA12-HIPEHL Type 1 automotive tube compound, VESTAMID X7293 NC is a highly targeted option.
Processing Guidelines for VESTAMID X7293 NC
VESTAMID X7293 NC supports:
- Pipe / tube extrusion
- Profile extrusion
- Other extrusion
- Injection molding
Current grade-specific processing references are:
| Processing Parameter | Published Value |
|---|---|
| General Melt Temperature Range | 200–240°C |
| Mold Temperature Range | 30–100°C |
| 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 |
For actual tubing extrusion, the line should be optimized for:
- Feed-zone temperature
- Compression-zone temperature
- Metering-zone temperature
- Adapter and die temperature
- Screw speed
- Melt pressure
- Line speed
- Tube outside diameter
- Wall thickness
- Draw-down
- Vacuum sizing
- Cooling-water flow
- Ovality
- Surface quality
Evonik’s PA12 processing guide notes that typical VESTAMID tubing uses conventional extrusion dies, with careful attention to sizing and water-film control because incorrect water flow at the calibration inlet is a common cause of tubing defects.
Material is supplied ready for processing in moisture-proof packaging. If packaging is damaged or granules have absorbed moisture, dry the material according to the latest Evonik PA12 processing recommendations before extrusion.
VESTAMID X7293 NC vs. VESTAMID X7293 BK 9.7507
| Feature | VESTAMID X7293 NC | VESTAMID X7293 BK 9.7507 |
|---|---|---|
| Base Polymer | Plasticized impact-modified PA12 | Plasticized impact-modified PA12 |
| Color | Natural Color | Black |
| Viscosity | High | High |
| Main Application | Flexible automotive tubing & hose | Flexible automotive tubing & hose |
| Tensile Modulus | 390 MPa | Approx. 410 MPa |
| Nominal Strain at Break | 235% | Approx. 240–250% |
| MVR | 26 cm³/10 min @220°C/10 kg | 53 cm³/10 min @275°C/5 kg |
| Melting Temperature | 172°C | Approx. 172°C |
| Tg | 8°C | Approx. 13°C |
| Natural / Black Selection | Suitable for downstream coloration | Ready-to-use black technical grade |
| Main Selection Reason | Natural color and flexible tube performance | Black color and stabilized technical appearance |
The MVR values are measured under different temperatures and loads, so they must not be used as a direct numerical comparison of flow.
Choose VESTAMID X7293 NC when the customer needs the natural-color formulation or wants downstream coloration.
Choose VESTAMID X7293 BK 9.7507 when the application specification calls for the black formulation.
Related Products
VESTAMID X7293 BK 9.7507 – Black high-viscosity plasticized impact-modified PA12 for flexible automotive tubing.
VESTAMID X7393 BK 9.7507 – Semi-rigid PA12 tubing grade with higher stiffness and burst-pressure positioning.
VESTAMID LX9013 BK 9.7507 – Plasticized impact-modified PA12 for demanding diesel/common-rail tubing systems.
View More PA12 Polyamide 12 Materials →
Technical Documents for VESTAMID X7293 NC
| Document Type | Description |
|---|---|
| TDS | Current physical, mechanical, thermal, electrical, pipe and rheological data |
| SDS | Safety Data Sheet |
| Automotive Fuel-Line Guide | Evonik PA12 fuel-line and tubing application information |
| Processing Guide | PA12 extrusion, tube sizing and drying recommendations |
| COA | Batch-specific quality information where available |
| Compliance Information | DIN 73378, ISO/DIN 7628-1 and SAE J844 application context |
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FAQ About VESTAMID X7293 NC
Q1: What is VESTAMID X7293 NC?
VESTAMID X7293 NC is a natural-color, high-viscosity, plasticized, impact-modified, heat- and light-stabilized PA12 from Evonik for flexible tubing and hose extrusion.
Q2: Is VESTAMID X7293 NC plasticized?
Yes. Plasticizer is explicitly listed in the current grade-specific information.
Q3: Which automotive standards are associated with the grade?
Evonik identifies DIN 73378 PA12-HIPHL Type 1, ISO/DIN 7628-1 PA12-HIPEHL Type 1 and SAE J844.
Q4: What is the density?
The typical density is approximately 1.02 g/cm³.
Q5: What is the tensile modulus?
The current dry tensile modulus is approximately 390 MPa.
Q6: How flexible is VESTAMID X7293 NC?
Nominal strain at break is approximately 235%, showing the highly ductile character of the material.
Q7: How does it perform at low temperature?
Unnotched Charpy specimens show no break down to -30°C, and SAE J844 tube testing records zero breaks at -40°C after both boiling-water and heat pretreatments.
Q8: Is VESTAMID X7293 NC resistant to diesel and automotive fluids?
Yes. Current grade data includes testing against diesel, EN 590 diesel, ISO reference fuels, alcohol-containing fuels, motor oil, brake fluid, alcohols and hydrocarbons.
Q9: What is the MVR?
The current MVR is approximately 26 cm³/10 min at 220°C / 10 kg. The test condition must be retained whenever the value is quoted.
Q10: What is the difference between VESTAMID X7293 NC and X7293 BK 9.7507?
The core application is similar, but the NC grade is natural color, while BK 9.7507 is black. Their published MVR values use different test conditions and should not be compared directly.
Request VESTAMID X7293 NC Price & Technical Support
For pricing, availability, technical documents or application support for VESTAMID X7293 NC, please provide:
- Required quantity
- Destination country or port
- Tube or hose application
- Fuel, air, brake, oil or SCR medium
- Tube outside diameter
- Wall thickness
- Minimum bend radius
- Continuous and peak service temperature
- Minimum cold-impact temperature
- Working and burst pressure
- Required tube color
- DIN / ISO / SAE requirement
- Extrusion-line information
- TDS, SDS or COA requirement
- Sample requirement, if applicable
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