| HS Code | 253334 |
| Density | 1.01 g/cm³ |
| Melt Volume Rate | 5 cm³/10 min at 190°C and 5 kg |
| Tensile Modulus Conditioned | 400 MPa |
| Yield Stress Conditioned | 20 MPa |
| Nominal Strain At Break Conditioned | >50% |
| Charpy Impact Strength Conditioned 23 C Unnotched | No break |
| Charpy Notched Impact Strength Conditioned 23 C | 25 kJ/m² |
| Charpy Notched Impact Strength Conditioned 30 C | 15 kJ/m² |
| Melting Temperature | 170°C |
| Vicat Softening Temperature B50 Conditioned | 50°C |
| Water Absorption At Saturation | 1.5% |
| Mold Shrinkage | 1.2% |
As an accredited Evonik VESTAMID eCO LX9039 BBM100 Nylon 12, Conditioned factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Evonik VESTAMID eCO LX9039 BBM100 Nylon 12, Conditioned: supplied in sealed, moisture-proof 25 kg bags, preserving quality for processing. |
| Container Loading (20′ FCL) | 20′ FCL: loaded with palletized, conditioned Nylon 12 bags, secured and ventilated for safe transport. |
| Shipping | Ship as conditioned nylon 12 granules in sealed, moisture-proof packaging to preserve low moisture content. Store away from humidity, direct sunlight, and high temperatures. No special hazard classification applies, but keep dry and handle with standard industrial hygiene practices to prevent contamination and maintain material integrity. |
| Storage | Store in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and open flames. Keep the original, unopened, moisture-proof packaging intact, as nylon 12 absorbs moisture. After opening, reseal tightly immediately and use promptly. Avoid high humidity and temperature extremes to maintain the conditioned material’s properties and prevent degradation. |
| Shelf Life | Shelf life: Minimum 2 years when stored dry, cool, in original sealed packaging, away from moisture and UV light. |
On heavy-duty truck and trailer pneumatic brake lines, the first field failure mode is rarely catastrophic burst but environmental stress cracking at fitting barbs after exposure to road salts containing zinc chloride and calcium chloride. VESTAMID eCO LX9039 BBM100 Nylon 12, Conditioned is inserted as the matrix resin at 100 wt% neat pellet feed in monolayer tube extrusion; closed-loop regrind from start-up purge is limited to 15 wt% because higher recyclate fractions reduce burst pressure retention after 1,000 h hot-oil ageing. The applicable compliance set is SAE J844 and ISO 7628 for thermoplastic air brake tubing, with tensile verification performed to ISO 527-1:2019 and notched Charpy impact to ISO 179-1/1eA. The downstream process uses a 25:1 L/D single-screw extruder with a barrier screw and Maddock mixing tip; melt temperature at the die is held at 225–245 °C, pre-drying is conducted at 80 °C for 4–6 h to 0.10% residual moisture, and vacuum sizing calibrates outside diameter to ±0.05 mm. Terminal finished product types include SAE J844-marked 1/4-inch and 3/8-inch air brake tubing used in tractor-to-trailer connections, bus door pneumatic actuators, and compressor governor signal lines. A known production bottleneck occurs when melt pressure excursions above 150–180 bar from screen-pack blinding raise shear heating and create lumen surface roughness; screen packs of 60/80/100 mesh are typically replaced after 6–8 h continuous running. The moisture-conditioned pellet state is not a downstream additive; it is a moisture-equilibration step that shifts dry-as-molded notched Charpy values toward service equilibrium. Processors who re-dry below 0.06% lose this impact benefit and can observe brittle failure at −40 °C.
| Application segment | Extruder configuration | Melt temperature at adapter | Pre-drying moisture target | Critical process limit |
|---|---|---|---|---|
| Air brake tubing | 25:1 L/D barrier screw, Maddock tip | 225–245 °C | 0.10 wt% max | Screen-pack blinding above 180 bar |
| Fuel vapor return line | 30:1 L/D grooved feed, gear pump | 230–250 °C | 0.08 wt% max | Layer variation above 5% nominal wall |
| Hydraulic pilot tube | 25:1 L/D grooved feed, vacuum sizer | 215–235 °C | 0.10 wt% max | Wall eccentricity above 0.04 mm |
| Sensor cable sheath | 20:1 L/D pressure crosshead | 220–250 °C | 0.12 wt% max | Melt fracture above 250 m/min line speed |
Low-permeation fuel line coextrusion places the barrier layer between repeated thermal cycling, fuel extraction, and chloride-induced stress cracking. VESTAMID eCO LX9039 BBM100 Conditioned is fed as a neat barrier or cover layer at 60–90 wt% of total wall thickness in multi-layer constructions, with tie-layer and EVOH or fluoropolymer barrier additions accounting for the remaining 10–40 wt%; monolayer diesel return tube is extruded at 100 wt%. Compliance is tested against SAE J2260 low-permeation fuel tubing sequences, SAE J2043 component-level perforation resistance, and ISO 13775-1 thermoplastic fuel tubing dimensions. The downstream coextrusion line typically uses three to five extruders feeding a spiral mandrel die, with individual barrel zones from 220 °C to 250 °C, gear-pump melt pressure 80–120 bar, and vacuum sizing at 0.6 bar negative pressure. The line outputs multi-layer vapor return lines, diesel injector spill tube bundles, and evaporative canister vent lines for passenger cars and commercial vehicles. A process conflict exists between moisture target and barrier consistency: residual moisture above 0.12% causes hydrolysis-induced surface pitting, while moisture below 0.06% leaves the tube over-stiff and prone to kinking during installation at −30 °C. Published data for this specific configuration is limited, but production records from spiral-mandrel coextrusion indicate layer-to-layer thickness variation must remain below 5% of nominal wall to preserve permeation test margins.
Hydraulic pilot circuits on mobile construction machinery expose thermoplastic tubing to mineral oil at 80–100 °C, external stone impact at −40 °C, and chloride-based deicing salts. The compound is used as a 100 wt% neat pellet feed in tube extrusion for pilot control lines; no downstream dilution with additional polyamide is required because the conditioned polyamide 12 matrix supplies the specified low-temperature flexibility. Compliance is set by DIN 73378 for polyamide tubing used in motor vehicles, ISO 7628 for cold impact, and ASTM D638-14 for tensile at yield. The production line uses a 25:1 L/D single-screw extruder with a grooved feed zone, die temperature 215–235 °C, and a closed-loop vacuum sizer maintaining 0.02–0.04 mm wall eccentric tolerance; cooling water is staged at 30–45 °C to avoid surface microvoids. Terminal finished product types comprise hydraulic pilot lines, cab tilt cylinder control tubes, and chassis lubrication distribution bundles in excavators, loaders, and agricultural tractors. A field-relevant failure mode is stress cracking at zinc chloride-laden connector interfaces; the conditioned state improves notched impact but does not eliminate chloride attack. The operational boundary is continuous exposure to zinc chloride concentration above 20 wt% at temperatures above 70 °C, where fitting sealers or alternative connector materials must be specified.
Wheel speed sensor and transmission harness cables require a sheathing layer that survives stone impingement, hot oil splash, and chloride brine without cracking at connector strain-relief points. VESTAMID eCO LX9039 BBM100 Conditioned is applied as the outer jacket at 100 wt% neat resin, extruded through a pressure crosshead die onto pre-heated conductor bundles at a wall thickness of 0.20–0.60 mm. The relevant standards are ISO 6722-1:2011 for low-tension road vehicle cables, ISO 14572 for sheathed cable test methods, and IEC 60811-401 for thermal ageing of sheathing materials. The extrusion line uses a 20:1 L/D pressure-type single-screw extruder with metering flight depth 2.4 mm and die temperature 220–250 °C; conductor preheating is set to 120–150 °C to ensure jacket adhesion without deformation of the primary insulation. Finished products are wheel-speed sensor extension cables, gearbox harness sheathing, and off-highway lighting harness outer jackets. Process limitations are dominated by melt fracture at die-land shear stress: line speeds above 250 m/min produce shark-skin surface defects if melt temperature is below 220 °C, and the practical lower wall thickness is 0.15 mm for this grade without fluoropolymer processing aids.
Process automation in food packaging and pharmaceutical secondary handling uses pneumatic actuators that exhaust air across cleanroom boundaries, making lumen contamination and plasticizer migration part of the acceptance specification. VESTAMID eCO LX9039 BBM100 Conditioned is processed neat at 100 wt%; downstream converters do not add antistatic or processing aids because the conditioned grade is formulated for stable melt strength on 24:1 L/D general-purpose single-screw extruders. Compliance includes ISO 8573-1:2010 compressed air purity classes, ISO 14644-1:2015 cleanroom air cleanliness, and REACH Annex XVII restrictions. The tube line runs at melt temperature 220–240 °C with dewpoint-controlled pre-drying to 0.10% moisture; vacuum size calibration maintains inside-diameter roughness at Ra 0.8 μm maximum, measured by stylus profilometry. Terminal finished products include push-in fitting tube bundles for pick-and-place robots, vacuum venturi supply lines, and cleanroom pneumatic panel jumpers. The operational boundary for unshielded service is continuous ozone exposure above 0.1 ppm, where PA12 surfaces can craze and require fluoropolymer liner or external shielding.
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Evonik VESTAMID eCO LX9039 BBM100 is a semi-flexible polyamide 12 (PA12) compound supplied as black pellets. The eCO prefix identifies ISCC PLUS mass-balance allocation of bio-circular feedstock, while LX9039 identifies a plasticizer-free, impact-modified PA12 chemistry and BBM100 denotes the black color package. The term “conditioned” in the datasheet refers to test specimens brought to moisture equilibrium under ISO 1110:2018 conditions corresponding to the 23 °C / 50 % RH standard atmosphere of ISO 291:2008, not to the moisture content of the material as delivered. At equilibrium, semi-flexible PA12 absorbs approximately 0.7 % to 0.8 % by mass of water, which plasticizes the amorphous phase and produces lower tensile modulus and higher notched-impact values than dry-as-molded specimens.
The grade is specified for pneumatic brake tubing, hydraulic line sheathing, fuel vapor lines, cable jackets, and industrial hoses where low-temperature flexibility, hydrocarbon resistance, and dimensional stability under humidity cycling are required. Because the eCO LX9039 BBM100 product is positioned as a drop-in replacement for the fossil-based VESTAMID LX9039, existing tooling, drying equipment, and extrusion parameters can be retained when lot-specific equivalence is confirmed through first-article qualification. Published lot-specific data for the eCO LX9039 BBM100 conditioned state should be obtained from the manufacturer; the engineering profiles below are drawn from the product family literature and generic PA12 conditioned behavior under ISO 291:2008 and ISO 1110:2018.
Water absorption in PA12 is governed by the polar amide groups along the aliphatic C12 backbone. In comparison with PA6 or PA66, the lower amide density of PA12 restricts equilibrium moisture uptake at 23 °C/50 % RH to roughly 0.7 %, whereas PA66 reaches approximately 2.5 % under the same atmosphere. Saturation water absorption for PA12 according to ISO 62:2008 is approximately 1.1 % to 1.5 % by mass. The absorbed water penetrates the amorphous regions and disrupts interchain hydrogen bonding; it does not permanently alter the crystalline lamellae but lowers the glass transition temperature and stiffness of the amorphous fraction. Consequently, tensile modulus values for conditioned semi-flexible PA12 are typically 20–40 % lower than dry-as-molded values prepared according to ISO 527-1:2019 and ISO 527-2:2012, while Charpy notched impact strength measured according to ISO 179-1/1eA increases because the matrix can yield before crack propagation.
For a plasticizer-free impact-modified PA12 such as LX9039, the conditioned-state ductility is particularly relevant. At subzero temperatures down to −40 °C, the moisture-plasticized matrix retains sufficient segmental mobility to blunt a propagating notch, whereas dry specimens may exhibit a higher tensile modulus but reduced impact energy. The eCO variant does not change the polymer backbone; it adds mass-balance feedstock traceability, so the semicrystalline morphology, melting range, and moisture response remain within the established PA12 class envelope. Users should request lot-release certificates that include moisture, tensile modulus, yield stress, elongation at break, and notched Charpy values rather than relying only on generic class data.
In applications where moisture uptake, hydrocarbon exposure, and low-temperature ductility occur simultaneously, the LX9039 class PA12 occupies a different position than structural polyamides. PA66 has higher dry tensile strength and heat deflection temperature but absorbs significantly more water and shows greater dimensional change. PA6 offers easier processability but lower hydrocarbon resistance and higher moisture sensitivity. PA11 is chemically similar in moisture uptake and flexibility, but PA12 typically has a lower density and a slightly lower melting point, which can reduce energy input in extrusion. The eCO variant adds mass-balance feedstock traceability without changing the polymer backbone, therefore the crystallization kinetics, melting range of approximately 172–178 °C, and density of approximately 1.01–1.03 g/cm³ remain within the PA12 class envelope.
| Parameter | Semi-flexible PA12 (LX9039 class) | Unmodified PA12 | PA66 | PA11 |
|---|---|---|---|---|
| Density | 1.01–1.03 g/cm³ | 1.01 g/cm³ | 1.14 g/cm³ | 1.04 g/cm³ |
| Equilibrium moisture content | 0.5–0.8 % | 0.7–0.8 % | 2.5 % | 0.7 % |
| Tensile modulus, conditioned | 350–650 MPa | 1100–1300 MPa | 2500–2900 MPa | 1100–1300 MPa |
| Notched Charpy impact, 23 °C | 15–30 kJ/m² | 8–12 kJ/m² | 8–12 kJ/m² | 10–20 kJ/m² |
The table summarizes representative property envelopes from industrial literature for PA12, PA66, and PA11; lot-specific data for VESTAMID eCO LX9039 BBM100 may differ and must be confirmed against the manufacturer’s certificate of analysis. Within the Evonik portfolio, the LX9039 class is softer and more impact tolerant than unmodified VESTAMID L PA12 tubing grades, yet stiffer and lower in ultimate elongation than VESTAMID E polyether block amide elastomers. Compared with glass-filled PA12 grades, the eCO LX9039 BBM100 compound avoids anisotropic shrinkage and retains higher ductility but provides lower tensile strength and creep resistance.
Barrel temperature selection for eCO LX9039 BBM100 follows the PA12 melt-processing envelope rather than the higher temperatures typical of PA66. Production-scale single-screw extruders with L/D ratios of 30:1 to 36:1 are commonly used; a flat-to-slightly rising profile from 180 °C at the feed throat to 220–240 °C at the metering section is typical for tubing and cable jacket extrusion. Melt temperatures above 260 °C increase the risk of thermal oxidation and gel-particle generation, while melt temperatures below 190 °C can produce melt fracture and inadequate homogenization. Injection molding of semi-flexible PA12 is usually carried out at melt temperatures between 200 °C and 250 °C with mold temperatures between 40 °C and 80 °C; the higher mold temperature improves crystallinity and dimensional stability but extends cycle time. Vent ports should be connected to vacuum at −0.08 MPa or deeper to strip volatiles and residual moisture during compounding.
Because this is an impact-modified grade, high-shear dispersion is required to distribute the impact modifier, but excessive shear can degrade the modifier and lower low-temperature impact strength. On a corotating twin-screw extruder with L/D of 44:1, screw designs with distributive mixing elements rather than aggressive kneading blocks are preferred for masterbatch dilution and sheet/profile extrusion. The melt volume-flow rate for semi-flexible PA12 is typically measured at 230 °C with a 2.16 kg load per ISO 1133-1:2022; laboratory lot-release data should be used to define the lower and upper control limits for a given line.
If the compound is stored in an uncontrolled warehouse above 60 % RH or is exposed to humid air after a bag is opened, pre-drying becomes mandatory before extrusion or injection molding. PA12 is hygroscopic; residual moisture above approximately 0.15 % by mass can hydrolyze the amide bonds in the melt, reducing molecular weight and causing surface splay, foaming, and loss of burst strength in finished tubing. A desiccant dryer operating at 80 °C for 4–8 h with a dew point of −30 °C or lower typically reduces residual moisture to below 0.10 % as measured by Karl Fischer titration according to ISO 15512:2019. Drying temperatures above 90 °C should be avoided because pellet clumping and oxidative discoloration may occur. Hopper residence time should not exceed the dried-material consumption rate by more than 2–4 h unless the hopper is blanketed with dry air.
On production lines, the most common failure mode associated with inadequate drying is internal porosity in thick-walled tube sections and intermittent melt fracture at the die lip. These defects are frequently misdiagnosed as melt temperature problems; moisture analysis of the feedstock before the throat resolves the ambiguity. If the extruder is not equipped with a vented barrel, the residual moisture limit becomes stricter because volatiles cannot be removed downstream. The black BBM100 package contains carbon black, which provides ultraviolet stabilization during outdoor weathering but does not compensate for drying deficiencies.
The use of conditioned PA12 in pneumatic and hydraulic line applications is regulated by product standards that require testing after moisture conditioning. For air brake tubing, SAE J844 and ISO 7628 specify dimensional, burst-pressure, flexibility, and environmental resistance requirements; PA12 grades such as LX9039 are selected because they maintain burst strength after fuel and oil contact and do not become brittle at winter temperatures. In automotive hydraulic lines, DIN 74324-1 is frequently referenced for thermoplastic tubing, and material suppliers provide IMDS entries for vehicle-level compliance. The conditioned state is critical because brake-system validation is not performed on dry-as-molded tubes; field moisture uptake changes the mechanical response before validation is complete.
Chemical resistance boundaries for PA12 should be observed in service. The polymer is resistant to many hydrocarbon fuels, mineral oils, greases, and diesel formulations, but it is not recommended for continuous exposure to strong acids, phenols, oxidizing agents, or certain chlorinated solvents at elevated temperature. Contact with glycol-based brake fluids at sustained high temperature may also require case-specific compatibility testing because the semi-flexible grade can be more susceptible to swelling than unmodified PA12. The eCO mass-balance claim is supported by ISCC PLUS documentation; EU REACH candidate list screening and RoHS Directive 2011/65/EU Annex II restrictions can be confirmed through the supplier’s compliance certificate. Published data for this specific configuration under long-term sour-gas exposure are limited, and any oilfield use should be preceded by compatibility testing.
