| HS Code | 270905 |
| Density | 1.01 g/cm³ |
| Melting Point | 178 °C |
| Water Absorption 24h 23c | 0.25 % |
| Tensile Modulus | 600 MPa |
| Tensile Strength At Yield | 34 MPa |
| Elongation At Break | >300 % |
| Flexural Modulus | 600 MPa |
| Charpy Impact Strength 23c | no break |
| Charpy Impact Strength Neg30c | no break |
| Shore Hardness D | 66 |
| Vicat Softening Temperature B50 | 125 °C |
| Melt Volume Flow Rate 190c 5kg | 30 cm³/10min |
As an accredited Evonik Vestamid L2124 Plasticized Nylon 12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Evonik Vestamid L2124 Plasticized Nylon 12 supplied as 25 kg moisture-resistant polyethylene-lined paper bags, granules ready for processing. |
| Container Loading (20′ FCL) | Load 20′ FCL with palletized Evonik Vestamid L2124 nylon 12, securely stowed, protected from moisture, and evenly distributed. |
| Shipping | Ship as non-hazardous plastic granules in sealed, moisture-resistant packaging to prevent absorption. Protect from excessive heat and direct sunlight to avoid softening or deformation. Keep dry and store upright during transit. Standard truck or container transport is suitable; no special dangerous goods declaration required when shipped under normal conditions. |
| Storage | Store Evonik Vestamid L2124 in its original, sealed packaging in a cool, dry, well-ventilated area. Protect from direct sunlight, heat sources, and high humidity, as moisture absorption can affect properties. Keep away from ignition sources. Ideal temperature is room temperature; proper storage maintains material quality for up to two years. |
| Shelf Life | Store in original sealed packaging, dry and cool. Shelf life typically 2 years if unopened and protected from moisture. |
In heavy-duty trailer brake systems, coiled air brake tubing produced from 100 wt% Vestamid L2124 with a PA12-based carbon black masterbatch dosed at 2.0–2.5 wt% is run as a single-resin phase; a fluoropolymer-free processing aid at 0.1–0.3 wt% is introduced only when the extruded surface roughness rises above Ra 0.8 µm at line speeds above 40 m/min. Pre-drying in a desiccant dryer at 80 °C for 4–6 h to a residual moisture below 0.08 wt% is mandatory because plasticized PA12 entering the metering section with moisture above 0.12 wt% produces visible surface pitting and a measurable loss in burst strength after 1,000 h thermal aging. Extrusion uses a grooved-feed single-screw extruder with L/D 30:1, screw diameter 45–60 mm, barrier mixing section, and output 60–120 kg/h; melt temperature is held at 210–235 °C, die temperature at 210–225 °C, and vacuum calibration tank pressure at −0.6 to −0.8 bar. Cooling water at 15–25 °C and a downstream puller with ±0.05 mm diameter tolerance are used before the tube is cut into coils. Compliance is against SAE J844 for nonmetallic air brake tubing and ISO 7628:2010 for thermoplastic air braking system tubing; these specifications require low-temperature impact resistance at −40 °C and resistance to zinc chloride environment, which the PA12 chemistry provides only when the compound is not contaminated with other polyolefins. Terminal products include coiled trailer brake lines, chassis air lines, and preformed pigtail assemblies for commercial vehicle air suspensions.
Coextrusion of fuel vapor tubing to SAE J2260 places a low-permeation EVOH barrier between inner and outer polyamide layers; Vestamid L2124 is used as the outer jacket at 100 wt% virgin compound, with the EVOH barrier held at 10–14 wt% of total wall thickness and adhesive tie layers specified at 0.10–0.15 mm per side. Clean in-house regrind from the same multilayer line may be reused in the outer L2124 layer up to 20 wt%, provided EVOH contamination in the regrind remains below 1.5 wt%; higher EVOH carryover produces delamination at the tie interface after thermal cycling. Separate extruders are required: outer L2124 at 24:1 L/D with melt temperature 215–240 °C, EVOH at 190–210 °C, and adhesive tie at 200–220 °C, feeding a 3-layer or 5-layer spiral mandrel die at 220–230 °C. Vacuum sizing locks the outside diameter, after which the tubing passes a permeation test under ISO 13355:2016 using CE10 fuel at 40 °C. This construction supports onboard refueling vapor recovery vent lines, fuel vapor return lines, and filler neck vent tubes in gasoline and diesel platforms where aromatic vapor exposure must remain below evaporative emission thresholds.
Compressed air distribution in robotic workcells and cleanroom packaging lines uses L2124 as the extruded tube base at 100 wt%, plus 2–3 wt% blue PA12 carrier masterbatch for line identification; no liquid plasticizer is added at the converter because the grade is already internally plasticized and additional external plasticizer causes dimensional instability during hot stamping. The material is pre-dried to 0.08 wt% moisture and extruded on a 24:1 L/D single-screw extruder at 200–220 °C melt temperature, with vacuum calibration controlling outside diameter to ±0.05 mm for push-in connector sealing. The finished tubing is tested against ISO 4414:2010 for pneumatic system design and ISO 8573-1:2010 for compressed air quality compatibility where oil carryover would otherwise swell softer TPU tubing but does not significantly affect PA12 within the specified −20 °C to +80 °C service window. Terminal products include 4–16 mm OD straight and coiled pneumatic lines, robot dress pack tubes, and bundled multi-channel control tubing for automation panels.
For railway rolling stock jumper cables and offshore control cables, the sheathing compound must retain flexibility after long-term exposure to gearbox oil splash and intermittent bending at −25 °C; L2124 is extruded at 100 wt% as the outer sheath, with a halogen-free flame-retardant masterbatch dosed at 3–5 wt% only where the cable bundle must pass single-wire flame spread verification under EN 50264-1. The addition of inorganic fillers is limited to 5 wt% because higher filler loading reduces elongation at break below the values required for repeated flexing in rolling stock applications. Tube-on pressure extrusion with a 25:1 L/D screw, melt temperature 210–230 °C, and a water bath at 20 °C is used to produce a sheath wall of 1.0–3.0 mm over insulated conductors. Compliance for offshore control cables references IEC 60092-351 for insulating and sheathing materials in ships, while railway applications additionally evaluate fire hazard under EN 45545-2; the sheathing is intended for jacketing of sensor cables, jumper cables, and mud pump control cables where low-temperature cracking and oil resistance determine service interval.
Where a hydraulic system must remain operational during Arctic start-up, a thermoplastic hose with a L2124 inner liner at 100 wt% and no post-added plasticizer provides lower moisture sensitivity than standard PA6 while maintaining the chemical resistance needed for synthetic ester and mineral oil fluids; an adhesion promoter masterbatch may be added at 0.5–1.0 wt% when the liner is bonded to a polyester braid. Liner extrusion runs on a 24:1 L/D single-screw extruder at 210–235 °C melt temperature, with ultrasonic wall monitoring holding liner thickness at 0.5–1.0 mm before the tube enters a 24-carrier radial braider. The outer polyurethane cover is then extruded at 190–205 °C, and the complete hose is tested for impulse and proof pressure under SAE 100R18 and ISO 3949, with low-temperature bend tests at −40 °C used to confirm that the liner does not crack before the reinforcement yields. Terminal products include subsea control umbilicals, construction machinery hydraulic hoses, and agricultural equipment hose assemblies requiring cold-climate start-up capability.
Injection molding of ski boot cuff shells with L2124 at 100 wt% and an internal mold release masterbatch at 0.5 wt% requires pre-drying at 80 °C for 4–6 h to a residual moisture below 0.08 wt%; melt temperature is held at 220–250 °C, mold temperature at 40–70 °C, and injection speed is reduced to avoid jetting because the low-viscosity plasticized melt can leave visible flow lines on the outer shell surface. A 28 mm three-zone screw with a non-return valve and back pressure of 5–10 MPa is used on clamps of 80–120 kN; published fracture data for L2124 in complex ski boot shell geometries is limited, so mold-filling simulation inputs should be validated on a pilot mold before production. The molded parts are evaluated for impact toughness at −20 °C using ISO 179-1 and for stress cracking after exposure to ski wax solvents. Compliance for European ski boot components is under REACH (EC) 1907/2006 and RoHS Directive 2011/65/EU; terminal products include ski boot cuffs, snowboard binding ratchets, and other cold-weather sports equipment structural components.
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Evonik Vestamid L2124 Plasticized Nylon 12 is a heat- and light-stabilized polyamide 12 compound containing a low-molecular-weight plasticizer distributed within the polyamide matrix. The base polymer is identified under ISO 1043-1 as PA12. Representative lot-averaged values reported for the grade include density of 1.01–1.03 g/cm³ at 23 °C under ISO 1183-1, melting endotherm peak between 172 °C and 176 °C under ISO 11357-1/-3, Vicat softening temperature B50 in the 135 °C–145 °C interval under ISO 306, and melt volume-flow rate between 15 cm³/10 min and 25 cm³/10 min at 230 °C with a 5 kg load under ISO 1133-1. These values are representative data for grade selection, not guaranteed specification limits; certificates of analysis should be requested for production-lot acceptance.
The grade is not a simple viscosity variant of unplasticized PA12. Plasticizer addition shifts the mechanical response from stiff semi-crystalline behaviour toward flexible, ductile response while retaining the polyamide 12 advantages of low water uptake and low density. This distinction is the main reason the product appears in flexible tubing, cable conduit, clip, and fastening applications where a harder PA12 would fail by cold embrittlement or excessive insertion force.
A direct comparison of dry-as-molded mechanical data shows the practical effects of plasticizer incorporation. Dry tensile modulus falls from approximately 1400–1600 MPa for unplasticized PA12 extrusion grades to 300–500 MPa under ISO 527-1/-2. Yield stress decreases from the 40–50 MPa range to 13–18 MPa, while Shore D hardness moves from 70–78 to 50–58 under ISO 868. The property shift is intentionally large; it allows snap-fit and tube components to flex without extreme wall-thickness reduction or complex geometry changes.
| Property | Test method | Vestamid L2124 plasticized PA12 | Unplasticized PA12 reference |
|---|---|---|---|
| Density at 23 °C | ISO 1183-1 | 1.01–1.03 g/cm³ | 1.01–1.02 g/cm³ |
| Tensile modulus, dry | ISO 527-1/-2 | 300–500 MPa | 1400–1600 MPa |
| Yield stress, dry | ISO 527-1/-2 | 13–18 MPa | 40–50 MPa |
| Shore D hardness, 3 s | ISO 868 | 50–58 | 70–78 |
| Charpy notched impact, 23 °C | ISO 179-1/1eA | No break | No break |
| Water absorption, saturation in water at 23 °C | ISO 62 | 1.5–2.0% | 1.5–2.0% |
Against PA6 and PA66, the differentiation is based primarily on water uptake. Saturated water absorption of PA12 remains near 1.5–2.0% by mass under ISO 62, while PA6 and PA66 commonly absorb 8.5–10% under equivalent immersion conditions. This difference stabilizes mechanical properties and dimensions in humid environments. A plasticized PA12 conduit or clip therefore retains its designed flexibility over seasonal moisture cycles with less plasticization drift than a plasticized PA66 component. The penalty is that short-term heat deflection and resistance to creep under load are lower than those of glass-reinforced PA66; continuous load-bearing designs should be evaluated with creep modulus data under ISO 899-1 rather than room-temperature tensile data alone.
Before hopper charging, residual moisture must be reduced below 0.10% by weight, with moisture content determined by Karl Fischer titration or an equivalent method. A dehumidified-air dryer operated at 80 °C for 4 h to 8 h with dew point ≤ -30 °C is the standard drying configuration. Drying time must be extended when ambient relative humidity exceeds 60% or when regrind content is above 20%. Insufficient drying produces surface defects, die drool, and hydrolytic chain scission during melt processing.
For flexible tubing extrusion, single-screw extruders with 25–30 L/D barrel length and a three-zone screw are typical. A compression ratio of 2.5:1 to 3.0:1 and a screen pack with 60–100 µm filtration are common. Barrel set points from feed throat to die usually follow a rising profile from 180 °C at the first zone to 230 °C at the metering zone, with measured melt temperature held between 220 °C and 240 °C. Melt temperature above 260 °C accelerates plasticizer volatilization and can generate surface pitting and yellowing. Melt temperature below 210 °C increases melt pressure and may cause surging in grooved-feed extruders. Production-scale experience indicates that surging is often caused by feed-throat bridging rather than insufficient barrel heat; feed-throat cooling below 60 °C and hopper agitation reduce this failure mode.
Injection molding uses barrel temperatures from 220 °C to 250 °C and mold wall temperatures from 40 °C to 80 °C. Mold temperatures below 40 °C can raise molded-in stress in living hinges and thin snap arms. Holding pressure should be set only high enough to prevent sink marks; excessive cavity pressure is associated with gate blush and jetting in multi-cavity tools. Hot runner systems should use externally heated manifolds without stagnant zones, and melt residence time at 240 °C should remain below 10 min to avoid plasticizer loss. After molding, conditioning at 23 °C and 50% relative humidity for 24 h to 48 h under ISO 291 increases ductility and should be reported with any impact data.
Flexible pneumatic tubing produced from this grade is run on vacuum sizing and calibration lines similar to those used for unplasticized PA12. Melt fracture at the die lip is normally the first limiting defect rather than extruder throughput. Maintaining die land temperature above 225 °C and limiting the drawdown ratio to 2:1 controls surface melt fracture; at drawdown ratios above 2.5:1, cold-impact retention can become inconsistent. Burst pressure for unreinforced tube should be verified according to ISO 1402 or the applicable EN test method for the specific diameter class. Clips and snap-fit components injection molded from the grade show lower insertion force than unplasticized PA12 because flexural modulus is reduced by approximately 70%; a direct material substitution into an existing rigid PA66 mold therefore usually requires a wall-thickness or deflection adjustment rather than a simple drop-in change.
At -30 °C to -40 °C, many vehicle and equipment components require notched impact energy above 6 kJ/m² to avoid brittle fracture during installation or service. Plasticized PA12 typically retains notched Charpy impact values above 8 kJ/m² at -30 °C under ISO 179-1/1eA, whereas some rigid PA66 grades fall below 6 kJ/m² at equivalent thickness. The lower amide density of PA12 reduces moisture-related embrittlement and preserves ductility in cold-dry conditions. For quality control, incoming material is tested under ISO 179-1/1eA and multi-axial impact under ISO 6603-2; component-level tests at the minimum service temperature remain necessary because gate and weld-line orientation affect impact response more than raw material data suggest.
Low water uptake also stabilizes dimensions in cable conduits, junction boxes, and exposed fasteners. Conditioning at 23 °C and 50% relative humidity produces a moisture content of roughly 0.7%–1.0% in PA12, while PA66 can absorb 2.0%–2.5% under the same conditions. Lower moisture absorption reduces seasonal variation in outer diameter, clamp force, and electrical insulation dimensions. The coefficient of linear thermal expansion for the plasticized grade is higher than that of unplasticized PA12; a typical value near 160 × 10−6 K−1 under ISO 11359-1/-2 must be accounted for in fixed-clamp layouts and long conduit runs.
Because the plasticizer is not covalently bonded to the polyamide chain, continuous contact with non-polar fluids can extract the plasticizer and shift the mechanical response toward that of a harder, less ductile PA12. This is the primary operational boundary for the grade. Before specifying the material in oil-contact, fuel-vapour, or aggressive aqueous service, extraction resistance should be evaluated by immersion under ISO 175 or ASTM D543-21, followed by notched Charpy impact testing under ISO 179-1/1eA. A plasticizer mass loss of 1% may raise Shore D hardness by several points and reduce low-temperature ductility. The exact shift depends on part thickness, exposure temperature, and fluid composition. Published data for this specific configuration is limited under dynamic fluid flow; representative service trials are required before production release.
Regulatory compliance for the supplied formulation is normally assessed under REACH and EU RoHS Directive 2011/65/EU. The grade does not require halogenated flame retardants for its base performance. Food-contact or potable-water applications require confirmation of specific migration limits under EU 10/2011 or the relevant national standard for the exact production lot, because plasticizer identity and concentration influence migration results. These statements are boundary conditions for material selection, not confirmations of a particular certification.
