| HS Code | 114218 |
| Density 23 C | 1.01 g/cm³ |
| Melting Point Dsc | 178 °C |
| Tensile Strength At Yield 23 C | 45 MPa |
| Elongation At Break 23 C | >50% |
| Tensile Modulus | 1600 MPa |
| Charpy Notched Impact Strength 23 C | 11 kJ/m² |
| Shore D Hardness | 72 |
| Water Absorption At Saturation | 1.6% |
| Melt Volume Rate 230 C 10kg | 60 cm³/10 min |
| Heat Deflection Temperature 1 8 Mpa | 55 °C |
| Viscosity Number | 80 cm³/g |
| Mold Shrinkage | 1.2% |
As an accredited Evonik Vestamid LX9007 Nylon 12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Vestamid LX9007 Nylon 12 is supplied in sealed 20 kg bags for moisture protection during transport and storage. |
| Container Loading (20′ FCL) | 20′ FCL: palletized drums/bags of Evonik Vestamid LX9007 Nylon 12 securely loaded, protected from moisture, with proper dunnage for safe transit. |
| Shipping | Evonik Vestamid LX9007 Nylon 12 ships as a non-hazardous, moisture-sensitive polymer. It is supplied in sealed, palletized bags or drums to protect against humidity. Ship in dry, covered transport, avoiding extreme heat and direct sunlight. No special hazmat classification is required, but keep packaging intact to prevent contamination. |
| Storage | Store Evonik Vestamid LX9007 Nylon 12 in its original, sealed packaging in a cool, dry, well-ventilated area. Protect from direct sunlight, heat sources, and excessive humidity to prevent moisture uptake. Keep containers tightly closed when not in use. Ideal storage temperature is below 30°C. |
| Shelf Life | Store in original sealed packaging, cool dry place; shelf life typically 2 years from manufacture date. |
In low-permeation fuel vapour tubing for gasoline and flex-fuel platforms, Evonik Vestamid LX9007 is specified as the structural outer and inner layers in five-layer coextruded architectures around an EVOH barrier core. The layer ratio is sized so that the EVOH core does not exceed 8–12% of total wall thickness, while the remaining PA12 mass provides hoop stress capacity and resistance to chloride-induced stress cracking from road-salt splash. Tie layers of maleic anhydride-functionalised polyolefin are run at 5–8% of total wall thickness each to maintain interlayer peel strength during thermal cycling from −40 °C to 125 °C. Five extruders feed a coextrusion die with melt backpressure held at 18–25 MPa; the melt temperature at the die lip is controlled at 230–245 °C. Pre-drying in desiccant hoppers at 80 °C for 4–6 h is required whenever resin has been exposed to ambient relative humidity above 60%, targeting residual moisture below 0.1 wt% as measured by ISO 15512. If moisture is not removed before processing, local viscosity reduction at the die exit produces surface roughness, inconsistent wall concentricity, and intermittent layer delamination in the finished tube. Compliance is evaluated against SAE J2260 low-permeation fuel tubing procedures, and the finished cut lengths are used in evaporative emission canister purge lines, tank vent lines, and engine bay vapour return assemblies.
Tubing produced from Vestamid LX9007 for push-in pneumatic connectors is extruded in outside diameters from 4 mm to 16 mm, with 8 mm outside diameter and 1 mm wall thickness being the dominant industrial configuration. Dimensional accuracy rather than ultimate tensile strength governs fitness for use, because ISO 14743:2004 fitting retention force tests are sensitive to ovality and shrinkage after sizing. In production, the tube is drawn through a vacuum calibration tank with inlet water temperature held at 40–60 °C and vacuum at −0.02 to −0.06 MPa; free shrinkage after annealing at 120 °C for 1 h is maintained at 1.5–2.5% in the machine direction. Blend ratios are not required because the grade is processed without monomeric plasticizer, which eliminates migration-driven fitment loosening in brass or stainless steel collet systems. If cooling water falls below 30 °C, the spherulitic skin freezes too rapidly, increasing longitudinal shrinkage beyond 3% and allowing the tube to creep out of the collet under cyclic pneumatic impulse. Burst pressure at 20 °C is evaluated hydrostatically on production samples to verify consistent wall thickness before coiling. Finished coils are installed in CNC pneumatic circuits, semiconductor assembly tools, and packaging actuators where extractable residue and plasticizer bloom are not permitted.
Thin-wall jackets of Vestamid LX9007 for automotive and industrial cables are extruded at wall thicknesses of 0.20–0.35 mm over copper conductors from 0.35 mm² to 6 mm². The compound is fed to a crosshead die on a single-screw extruder with L/D 25:1 and compression ratio 2.8:1; melt pressure at the breaker plate is maintained between 15 MPa and 25 MPa to control shear heating when screw speed exceeds 80 rpm. Pre-drying is mandatory at 80 °C to residual moisture below 0.08 wt% because jacket outgassing creates pinholes that reduce low-temperature impact resistance in the ISO 6722 cold winding test at −40 °C. A UV-stabilised formulation uses carbon black masterbatch at 5–7 wt% with the base resin, introduced through a gravimetric dosing unit at the feed throat. The terminal jacket is subjected to SAE J1128 and ISO 6722 requirements for abrasion resistance, fluid compatibility with engine oils, and flame propagation. Published data for this specific masterbatch configuration is limited, therefore batch conformity is validated against the certificate of analysis for melt volume-flow rate by ISO 1133 and density by ISO 1183. Finished products are used in engine compartment harnesses, battery management sensor cables, and rail jumper wiring where repeated flexing and exposure to glycol-based coolants occur.
Coolant distribution lines for high-voltage battery packs require hydrolysis resistance under a 50:50 water-glycol charge at continuous service temperatures up to 90 °C and excursions to 105 °C during fast charge. Vestamid LX9007 is extruded into smooth or corrugated tube with an inner diameter of 12–20 mm and wall thickness of 1.5–2.0 mm; the corrugated profile is produced by a vacuum corrugator with tooling that sets an outer-to-inner diameter ratio between 1.4:1 and 1.7:1. Hydrolysis stabilisation is evaluated by ISO 188 accelerated ageing in coolant concentrate at 125 °C for 1,000 h; tensile strength retention above 70% of the unaged value is typical for PA12 coolant lines, but published data for this specific grade in aged battery coolant is limited. Process control focuses on melt temperature 240–260 °C and cooling tank temperature 60–80 °C to suppress rapid crystallisation at the inner wall, which otherwise causes microvoids at the corrugation roots and reduces pressure cycling endurance. Terminal assemblies are used in battery pack coolant manifolds, charger inlet cooling loops, and underfloor thermal management circuits where low extractable content and dimensional stability after thermal aging are required.
Offshore unbonded flexible risers use extruded anti-wear and outer sheath layers from Vestamid LX9007 where the operation envelope is specified by API 17J. Layer dimensions are project-specific; anti-wear tapes are produced in thicknesses from 3 mm to 6 mm, while the outer sheath is usually 4–8 mm thick. Polyamide 12 is selected because its saturated chain structure limits permeability relative to polyamide 6 under methane and sour gas exposure, but rapid gas decompression damage increases when the melt is quenched too rapidly. Therefore, after discharge from the die at 230–250 °C, the extrudate passes through a heated air tunnel at 120–150 °C before entering water at 80 °C; this retards crystallisation and produces morphology better able to tolerate gas expansion without internal fracture. The screw-to-haul-off ratio is held at a draw ratio of 1.05–1.15 to avoid frozen-in orientation that reduces environmental stress-cracking resistance in 3.5% NaCl brine at 60 °C. Qualification includes API 17J tests and ISO 22088 environmental stress-cracking specimens. Terminal components include annular vent spacer strips and outer sheaths on dynamic risers in shallow and deep water.
Competitive Evonik Vestamid LX9007 Nylon 12 prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to admin@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8615365186327
Email: admin@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Evonik Vestamid LX9007 is an unreinforced polyamide 12 (PA12) extrusion resin based on laurolactam, characterized by an 11:1 methylene-to-amide ratio along the polymer backbone. This hydrocarbon-rich structure reduces hydrogen-bond density relative to PA6 and PA66, giving the material a density of 1.01 g/cm³ when tested to ISO 1183-1 and equilibrium moisture uptake of approximately 0.7% at 23 °C and 50% RH under ISO 62. The grade is used in mono- and multi-layer tube, fuel-vapour line, compressed-air line, and cable-sheathing applications, and it is selected where melt strength, hydrolytic stability, low-temperature impact, and dimensional stability are required. In extrusion, melt temperatures are normally maintained between 220 °C and 250 °C. Production-scale trials on single-screw lines with 30 L/D barrier screws have shown that melt temperatures above 270 °C and residence times exceeding 6 min promote gel-particle formation visible as black specks and surface pitting. The polymer does not require an adhesion-promoting primer in multilayer PA12/EVOH structures when tie resins are selected from maleic-anhydride-grafted polyolefins, although published data for this specific configuration remains limited.
Two process-related differences separate LX9007 from injection-moulding PA12 grades: melt mass-flow rate and molecular-weight-dependent melt elasticity. Lower-viscosity PA12 grades such as Vestamid L1600 move through thin-wall weld-line sections with lower injection pressure, but they exhibit reduced parison and die-swell stability in free-form tube extrusion. LX9007 has an MVR near 6 cm³/10 min at 235 °C and 5 kg when measured according to ISO 1133-1:2022. This viscosity level enables the melt to resist sag during vacuum calibration while remaining processable in thin-wall tube profiles. In multilayer tube coextrusion, the grade can be paired with EVOH or fluoropolymer barrier layers without producing the large viscosity mismatch that causes interfacial instability; the viscosity ratio of PA12 to ethylene-vinyl alcohol at 230 °C is substantially lower than that of PA6 to ethylene-vinyl alcohol under identical shear-rate conditions.
Before any single-screw line start-up with Vestamid LX9007, pre-drying in a desiccant-bed dryer is required when ambient relative humidity exceeds 60% or when regrind content exceeds 20 wt%. The target residual moisture is below 0.10% because polyamide 12 undergoes hydrolytic chain scission at melt temperature, producing splay, surface roughness, and a measurable reduction in notched Charpy impact. A dry-air dryer set to 80 °C with a dew point of -30 °C reduces moisture from 0.7% to below 0.10% in approximately 4 h. Extruder barrel profiles are typically set from 200 °C in the feed throat to 230 °C in the metering zone, with the adapter and die head held at 225–240 °C. Melt temperature measured at the die should not exceed 250 °C for sustained runs. A screen-pack sequence of 120/80/60/80/120 mesh with a breaker plate is used on 45 mm and 60 mm extruders to raise back-pressure and disperse gels; melt pressure before the screen pack is kept below 300 bar to avoid excessive shear heating. During vacuum calibration of round tubing, a vacuum level of 0.4–0.7 bar below atmospheric pressure and a first water-bath temperature of 40–60 °C are typical. Higher vacuum or colder water raises line tension and increases ovality and residual axial stress in the finished tube.
The values in Table 1 are drawn from typical supplier datasheet data for conditioned specimens and are not to be treated as guaranteed batch minima. Conditioning followed ISO 291 at 23 °C and 50% RH unless otherwise noted.
| Property | Typical value | Test method |
|---|---|---|
| Density | 1.01 g/cm³ | ISO 1183-1 |
| Equilibrium moisture uptake, 23 °C/50% RH | 0.7% | ISO 62 |
| Tensile modulus | 1400 MPa | ISO 527-1/2 |
| Tensile stress at yield | 40 MPa | ISO 527-1/2 |
| Tensile strain at yield | 5% | ISO 527-1/2 |
| Tensile strain at break | >200% | ISO 527-1/2 |
| Flexural modulus | 1200 MPa | ISO 178 |
| Charpy notched impact strength, 23 °C | 5 kJ/m² | ISO 179-1/1eA |
| Charpy unnotched impact strength, 23 °C | No break | ISO 179-1/1eU |
| Melting temperature, DSC | 176 °C | ISO 11357-3 |
| Vicat softening temperature, B50 | 165 °C | ISO 306 |
| Melt volume-flow rate, 235 °C/5 kg | 6 cm³/10 min | ISO 1133-1 |
| Shore hardness D | 64 | ISO 868 |
Tensile modulus of 1400 MPa places LX9007 in the unreinforced flexible-rigid transition of polyamides. Unlike PA6 and PA66, which lose significant stiffness after moisture uptake, PA12 retains a larger fraction of its dry-as-moulded mechanical stability because equilibrium moisture is only 0.7% at 23 °C and 50% RH. The elongation at break above 200% permits snap-fit assembly and repeated flexing in cable conduits. The notched Charpy value of 5 kJ/m² at 23 °C indicates moderate toughness for an unreinforced polyamide, but the material is not a substitute for high-impact modified PA6 where notched Izod values above 15 kJ/m² are required. At sub-zero temperatures, PA12 retains better impact resistance than PA66; the glass-transition temperature of PA12 is below 50 °C, whereas PA66 has a dry-state glass transition near 70 °C, which explains lower embrittlement at -40 °C in automotive air-line bundles.
When calibration vacuum falls below 0.5 bar in multi-lumen tube extrusion, wall-thickness control becomes unstable because the extruded melt does not fully contact the sizing dies. The resulting lumen webs thin asymmetrically, and the final tube shows ovality greater than 0.20 mm on an 8 mm outside-diameter part. At vacuum above 0.7 bar, the tube surface drags against the calibration sleeves and creates longitudinal scoring. Operators typically adjust the water-bath temperature to 50 °C and reduce line speed by 10% before changing vacuum set-points. The recrystallisation half-time of PA12 at 140 °C is longer than that of PA6, so calibration must remove sufficient heat to solidify the outer skin before the tube exits the first cooling tank. A tank length of 6 m with water circulation at 0.5 m/s is often required at line speeds of 25–40 m/min for 2 mm wall thickness. Residual stresses generated by high vacuum and cold water can be measured by immersion in 100 °C oil or by monitoring dimensional recovery after annealing at 120 °C for 1 h.
In diesel fuel line outer-layer specifications, PA12 is used for its resistance to aliphatic hydrocarbons, low water reabsorption, and resistance to zinc chloride road salt. The grade should not be used as the primary barrier layer in low-permeation fuel systems; that function is assigned to ethylene-vinyl alcohol, polyvinylidene fluoride, or fluoropolymer inner layers. Adhesion between LX9007 and EVOH normally requires a maleic-anhydride-grafted tie resin, and the coextrusion die temperatures should be limited to the upper range of the PA12 window to maintain a stable interface. In compressed-air tubing, PA12 is selected over PA6 because PA6 absorbs moisture and swells in humid compressed-air systems, changing internal diameter and flow resistance. PA12 tubes also show better resistance to UV-induced brittleness when carbon black is included in the specified colour package.
The unreinforced character of LX9007 puts its stiffness and elongation between plasticized PA12 and glass-filled PA12. Plasticized PA12 grades for flexible tubing have Shore D hardness values near 55 and flexural modulus below 700 MPa, whereas glass-filled PA12 compounds typically have density above 1.20 g/cm³ and tensile modulus above 3000 MPa. LX9007 retains a Shore D hardness near 64 and flexural modulus near 1200 MPa, giving it sufficient hoop strength for pressure-rated tube walls without the brittle fracture sensitivity of 30% glass-fibre-reinforced PA12. The sacrifice is dimensional stability under load: the heat deflection temperature of unreinforced PA12 is below 60 °C at 1.8 MPa, while glass-filled PA12 exceeds 150 °C under the same load. In applications with continuous service above 70 °C and mechanical load, a glass-filled PA12 or PA6/6T is more suitable. The processing comparison also differs: glass-filled grades require hardened screw and barrel surfaces and generate higher melt viscosity, while plasticized grades require lower melt temperatures to avoid plasticizer volatilisation.
Melt residence time governs the practical extrusion window more than barrel set-point alone. At 250 °C, the stabilised PA12 melt can tolerate normal screw residence times of 2–4 min on 25 L/D to 30 L/D extrusion lines. Above 260 °C, oxidative chain scission accelerates visibly as yellowing and surface roughness, and gel formation increases sharply. Hot-runner systems with externally heated manifolds should keep the manifold temperature below 250 °C; dead spots above 260 °C generate carbonized deposits after 8 h of continuous operation. When melt pressure during extrusion rises by more than 20 bar over a 30 min period at constant screw speed, the cause is usually gel accumulation on screen packs or the breaker plate. The stabilizer package in the grade delays, but does not eliminate, oxidative degradation; nitrogen blanketing of the feed throat and dry-air supply reduce discolouration in long-run tube production.
Die swell in this high-molecular-weight PA12 is typically between 1.2 and 1.4 at shear rates typical for tube extrusion. This must be compensated by drawing down the sizing die diameter. If the die land length is below 10 mm for a 2 mm wall tube, elastic recovery can produce a final outer diameter 0.3–0.5 mm larger than the die gap. For thick-wall tubing above 4 mm, a longer die land of 20 mm and a reduced die gap are used to allow relaxation of entrance-flow stresses. The calibration die should be sized 10–15% smaller than the free-form extrudate diameter when air-calibration methods are used.
For injection-moulded fasteners, clips, and electrical connector housings, Vestamid LX9007 is processed at melt temperatures of 230–250 °C and mould temperatures of 40–80 °C. A mould temperature of 80 °C increases crystallinity and improves dimensional stability but extends cycle time by 15–20% compared with a 40 °C mould. Shrinkage in the flow direction is typically 0.8–1.2% for unreinforced PA12, requiring tooling cut adjustments relative to PA66 shrinkage of 1.4–1.8%. Wall sections below 0.5 mm are difficult to fill with an extrusion-grade high-viscosity resin; if thin-wall connectors are required, a lower-viscosity PA12 or PA6 grade should be selected.
For food-contact, drinking-water, and medical-device applications, the final compound and colour concentrate must be evaluated under the relevant positive lists, because the base-polymer datasheet does not automatically confer suitability. A manufacturer’s regulatory statement is required for FDA 21 CFR 177.1500, EU 10/2011, and USP Class VI if the tubing is used in medical or potable-water circuits. The processing window is also affected by colour masterbatch: carrier resins with lower melting point can reduce melt strength, and inorganic pigments can nucleate PA12, increasing crystallinity and shrinkage by 0.2–0.4%. Combined with the moisture limit of 0.10% and the melt-temperature limit of 250 °C, these boundary conditions define the practical operating envelope for the material.
