| HS Code | 161103 |
| Polymer Type | Nylon 12 |
| Glass Fiber Content | 30% |
| Density | 1.24 g/cm³ |
| Melting Point | 178 °C |
| Tensile Modulus | 8000 MPa |
| Tensile Strength | 115 MPa |
| Elongation At Break | 3% |
| Flexural Modulus | 7000 MPa |
| Charpy Notched Impact | 8 kJ/m² |
| Heat Deflection Temperature 1 8 Mpa | 165 °C |
| Water Absorption 24h | 0.2% |
As an accredited Evonik VESTAMID® LX9117 BK Nylon 12, Glass Fiber Reinforced factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Evonik VESTAMID LX9117 BK (black, glass-reinforced nylon 12) is supplied as dried pellets in sealed 25 kg bags. |
| Container Loading (20′ FCL) | 20′ FCL: Evonik VESTAMID LX9117 BK Nylon 12 (glass fiber reinforced) packed on pallets, secured for safe transport. |
| Shipping | VESTAMID® LX9117 BK is supplied as moisture-sensitive nylon 12 pellets in sealed, vapor-proof packaging. Ship in original containers to prevent moisture uptake. Use dry, covered transport; protect from rain, condensation, and mechanical damage. Standard handling applies; not classified as hazardous cargo for road, rail, sea, or air freight. |
| Storage | Store Evonik VESTAMID® LX9117 BK in its original, unopened packaging in a cool, dry place. Keep tightly sealed to prevent moisture absorption, which can degrade the material. Avoid direct sunlight, high heat, and humidity. Under proper conditions, shelf life is typically two years from date of manufacture. |
| Shelf Life | Store in original sealed packaging in a cool, dry place. Shelf life is typically two years from date of manufacture. |
| Application segment | Qualification standard | Test condition | Failure criterion |
|---|---|---|---|
| Air brake fittings | ISO 7628 | -40°C pressure cycling 0.15–1.5 MPa | Leakage or thread cracking |
| Fuel filler hinge | ISO 291 | 23°C / 50% RH conditioning | Dimensional shift > 0.3 mm |
| Cable carrier links | ISO 179-1/1eA | -30°C Charpy impact | Brittle fracture |
| Gas detector housing | IEC 60068-2-31 | 1.5 m drop onto concrete | Snap-fit tongue cracking |
Fuel filler flap hinges molded from this grade must hold panel gap and flushness after exterior paint bake and repeated hinge cycling. The hinge is gated at the thick bearing boss so that glass fibers align along the hinge axis; this orientation produces anisotropic shrinkage in the range of 0.2–0.4% in the flow direction and 0.5–0.9% transverse to flow depending on wall thickness. If the gate is moved to a thin rib, differential fiber orientation across the rib width creates bowing after ejection, and the hinge leaf must be post-machined to restore flatness. Processing sequence: pre-drying at 80°C for 4–8 h to 0.1% moisture, melt temperature 260–280°C, mold temperature 50–80°C with a thermally isolated hot runner. The PA12 matrix is less hygroscopic than PA6, but automotive validation still requires dimensional checks after conditioning at 23°C and 50% RH for 48 h according to ISO 291. Paint bake simulation at 120°C for 30 min must not shift the hinge gap by more than 0.3 mm; annealed fixtures are used to prevent thermal creep during the first cycle. The BK color package eliminates the need for adding black masterbatch. Adding masterbatch into a pre-colored compound is not recommended because viscosity dilution can alter gate pressure and modify fiber distribution. If dilution with unreinforced PA12 is attempted above 5 wt% for rheology adjustment, the paint-bake dimensional stability required for the hinge is invalidated. Finished hinged fuel access doors, hinge leaves, and spring retainers are assembled onto the vehicle body with 8–12 N·m fastening torque. Published data for torque retention after thermal cycling of this specific VESTAMID grade is limited; validation should follow OEM-specific thermal shock cycles, not a universal ISO test.
In high-cycle automated assembly lines, energy supply chain links are molded from this compound because the glass fiber reinforcement raises creep resistance under constant chain tensile load while the PA12 matrix retains low-temperature impact for cold-start factory bays. Each link is validated for material lot acceptance using ISO 527-2 tensile modulus and ISO 179-1/1eA Charpy impact at -30°C. The processing requirement differs from thick automotive fittings: a thin side plate with a 2–3 mm wall requires fast injection to avoid premature freeze, but high screw speed above 0.2 m/s circumferential velocity can damage glass fibers and reduce notched impact by more than 10%. A mid-pressure screw profile with a low-shear mixing section is preferred. Barrel temperatures are set from 235°C at the feed zone to 280°C at the nozzle; mold temperature is kept at 40–60°C to shorten cycle time while accepting a slightly lower crystallinity than is required for pressure-tightness applications. Gate location is placed at the thickest web between the link pin bores; a single cold sub-runner gate per cavity may be used for two-cavity prototype tools, but production tools use full hot runners to avoid gates freezing before pack. Regrind ratio is capped at 10 wt% because thin link webs carry tensile stress along the longitudinal axis and fiber length distribution shifts downward during re-extrusion. Finished link assemblies are run on a linear axis test stand at a defined OEM traverse speed and cycle count; acceptance is based on link sag less than 1.0 mm per meter. Compliance for the assembly is derived from machine safety wiring requirements such as IEC 60204-1, although the material itself is not a listed component under those clauses. Published long-term wear data for this exact PA12 compound in cable carrier applications is sparse; test data from the specific link design should be generated before series release.
When a natural gas pressure regulator housing must maintain thread torque after exposure to 80°C dry gas and subsequent cold start at -20°C, the part is produced from this compound with a multi-cavity hot runner and sequential valve gating. The gate sequence moves the weld line from the diaphragm sealing rim to a low-stress boss wall; weld-line strength is then verified on molded tensile bars from the same tool using ISO 527-2. Pre-drying is more stringent than for non-pressure parts because residual moisture above 0.08% can generate steam during melt homogenization and create voids in the regulator body wall. Drying at 80°C for 6–12 h in a desiccant dryer with a dew point below -40°C is standard. Melt temperature is set to the lower end of the processing window, between 250°C and 270°C, to reduce degradation of the heat-stabilizer package. Mold temperature is held at 80–90°C to maximize crystallinity and minimize post-mold dimensional drift in service. The mold is fitted with cavity pressure sensors; the cavity pressure-time integral is monitored to hold ±5% consistency. After molding, bodies are annealed at 100°C for 2 h under nitrogen to complete secondary crystallization before thread chasing. The glass-fiber reinforced compound is used without further dilution by unreinforced PA12; dilution reduces tensile modulus and thread shear strength below design limits. Finished regulator housings are tested for gas leakage at 1.5 times maximum operating pressure according to the valve manufacturer's internal procedure. Material-level compliance is verified against RoHS Directive 2011/65/EU Annex II and the REACH Candidate List; pressure vessel standards do not directly cover a component housed within the regulator assembly. Published data for creep at 80°C in dry gas for this specific grade is limited; long-term stress relaxation must be evaluated using ISO 899-2.Portable gas detector housings demand drop-impact toughness, chemical resistance to aliphatic hydrocarbons, and dimensional stability after exposure to ambient humidity. The housing is designed with 2.5–4.0 mm wall sections and internal ribs to stiffen sensor chambers without adding external mass. Injection molding uses a cold runner sprue gate into the rear face; the gate land length is maintained at 0.5–1.0 mm to control shear heating and avoid material discoloration. Pre-drying is fixed at 80°C to 0.1% residual moisture. Melt temperature is set between 255°C and 280°C; mold temperature is 60°C with a water-circulated temperature control unit. The lower mold temperature is selected to reduce cycle time in multi-cavity tools, but it produces a less crystalline surface layer that is later annealed at 90°C for 4 h to stabilize snap-fit retention. Drop testing is performed per IEC 60068-2-31 from 1.5 m onto concrete; a housing failure occurs if the snap-fit tongue cracks at the gate. The processing ratio includes 100% virgin compound for the first shot series; production trials evaluate regrind at 10–20 wt% only after verifying that Charpy impact at -30°C does not fall below the drawing requirement. Anti-static performance is not inherently conferred by PA12; if the detector requires surface resistivity below 10⁹ Ω, the part must receive a post-molding anti-static coating or the compound must be revalidated. Finished housings are assembled with elastomer overmolding, but two-component processing was not used for the glass-filled substrate. Published data for ESD, chemical resistance, and drop performance of this specific VESTAMID grade is limited; the buyer should request lot-specific ISO 179-1/1eA and ISO 527-2 data from the supplier.
When a pump impeller housing requires post-molding boring of the shaft seat to maintain total indicated runout below 0.05 mm, machining exposes glass fibers and creates a surface finish that differs from the molded skin. The housing is molded with a central gate to produce radial fiber orientation, but this orientation increases bore ovality after ejection because transverse shrinkage is higher than longitudinal shrinkage. To compensate, the mold core is ovalized by 0.1–0.2 mm along the expected shrink axis; the final boring operation then removes only 0.3 mm of stock from the bore surface. The compound must be dried to 0.08% moisture before molding because water vapor contributes to barrel vent foam and surface porosity that becomes visible after machining. Melt temperature is controlled at 260–280°C; mold temperature is held at 70–90°C to achieve a high degree of crystallization before boring. Machining speed is limited to 500–1,000 m/min with carbide tooling and a feed rate of 0.05–0.10 mm/rev to prevent fiber pull-out and micro-cracking at the bore surface. The glass fiber content makes tool wear higher than unfilled PA12; tool replacement intervals are reduced by approximately 50% compared with unfilled polyamide. After machining, the bore is inspected for exposed glass fiber bundles using dye penetrant inspection; any crack indication within 0.2 mm of the bore edge rejects the part. The housing is used in industrial water circulation pumps; material selection requires chemical resistance testing in 50% ethylene glycol at 90°C for 1,000 h according to the pump manufacturer's procedure, not an ISO standard. Published data for this exact grade in machined pump housings is limited; the processing limits above are derived from general PA12-GF machining practice and require confirmation on the specific tool.
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Electrically black-pigmented, glass-fiber-reinforced polyamide 12 grade VESTAMID® LX9117 BK is a semi-crystalline thermoplastic supplied in pellet form for injection molding. The compound is classified as PA12-GF30 under ISO 1043-1, with a glass fiber content of 30% by mass determined by ISO 3451-1 after ashing. The BK suffix denotes carbon black pigmentation rather than a separate polymer modifier. Typical values listed are not batch-release limits and are conditioned at 23 °C and 50% relative humidity unless specified dry.
The property profile is dominated by the glass fiber length distribution, the PA12 matrix crystallinity, and the dispersion of carbon black. For comparative purposes, unfilled PA12 typically exhibits a dry tensile modulus near 1,400 MPa; the addition of 30% glass fiber raises dry tensile modulus to 2,300 MPa when measured at 23 °C per ISO 527-1/-2. Elongation at break decreases from greater than 200% in unfilled PA12 to approximately 4% in the reinforced grade. This ductility reduction is accompanied by a mold shrinkage reduction from approximately 1.5% to 0.2% in flow direction per ISO 294-4.
Mechanical, thermal, and physical attributes published for the dry-as-molded state are listed below. Values are conditional and do not replace batch certification.
| Property | Value | Test method |
|---|---|---|
| Density at 23 °C | 1.23 g/cm³ | ISO 1183-1 |
| Glass fiber content | 30 % | ISO 3451-1 |
| Tensile modulus, dry | 2,300 MPa | ISO 527-1/-2 |
| Tensile strength at break | 65 MPa | ISO 527-1/-2 |
| Elongation at break | 4 % | ISO 527-1/-2 |
| Charpy notched impact at 23 °C | 8 kJ/m² | ISO 179-1/1eA |
| Charpy notched impact at −30 °C | 5 kJ/m² | ISO 179-1/1eA |
| Heat deflection temperature at 1.8 MPa | 80 °C | ISO 75-1/-2 |
| Heat deflection temperature at 0.45 MPa | 165 °C | ISO 75-1/-2 |
| Vicat softening point B50 | 175 °C | ISO 306 |
| Coefficient of linear thermal expansion, flow direction | 80 × 10−6 K−1 | ISO 11359-2 |
| Molding shrinkage, flow direction | 0.2 % | ISO 294-4 |
| Water absorption at saturation | 1.1 % | ISO 62 |
Thermomechanical resistance is quantified by heat deflection temperature of 80 °C at 1.8 MPa and 165 °C at 0.45 MPa per ISO 75-1/-2. Vicat softening point is approximately 175 °C under B50 conditions per ISO 306. The melting peak of the PA12 matrix is near 176 °C to 180 °C by differential scanning calorimetry per ISO 11357-3. Because heat deflection temperature remains below the crystalline melting point, load-bearing components should be evaluated for creep at temperatures above 80 °C.
Long-term thermal oxidative stability in air is heat-stabilized but must be validated by the end user at target temperature and exposure time; published data for this specific configuration is limited. Oven aging according to ISO 188 is an appropriate screening method. For continuous exposure above 120 °C, tensile strength retention should be tracked at intervals of 500 h, 1,000 h, and 2,000 h.
The glass fiber length distribution in molded parts is not homogeneous across wall thickness. A skin-core morphology develops: near the frozen layer, fibers align in flow direction; in the core, transverse orientation may dominate. This produces anisotropic shrinkage. Warpage in flat parts with ribbing can be reduced by gate widths that pack the core and by mold temperatures at the upper end of the recommended range. For tolerances below ±0.05 mm, mold filling simulation using a Folgar-Tucker orientation model is necessary because published data for this specific configuration is limited.
The carbon black pigmentation contributes to UV screening, with color change and tensile strength retention evaluated by accelerated weathering according to ISO 4892-2. When joining to a natural PA12 part, through-transmission laser welding at 980 nm can be used only if the absorbing part is the VESTAMID® LX9117 BK side. Weld strength is sensitive to glass fiber content at the interface; shear tests according to ISO 19095-2 are used to qualify laser welds.
Moisture absorption at saturation in water at 23 °C is approximately 1.1% by mass according to ISO 62. This is substantially below PA6 and PA66, which reach 9% to 10% under similar conditions. The low moisture uptake stabilizes molded-part dimensions in humid underhood environments. Nevertheless, residual moisture during melt processing causes splay and hydrolytic molecular weight loss. Pellets are pre-dried at 80 °C for 4 h to 6 h in a desiccant dryer with a dew point no higher than −30 °C; residual moisture is verified below 0.10% by weight using Karl Fischer titration per ISO 15512. Drying should be extended if storage has exceeded 24 h at 60% relative humidity.
The recommended melt temperature window is 250 °C to 280 °C, measured at the nozzle with a needle thermocouple. Mold temperature is set between 40 °C and 80 °C; lower temperatures reduce cycle time but increase fiber exposure at surfaces, measurable as surface roughness increase per ISO 4287, and reduce weld-line strength. A general-purpose three-zone screw with L/D ratio 20:1 to 25:1 and compression ratio 2.0:1 to 2.5:1 is used. Screw peripheral speed is limited to 0.05 m/s to 0.15 m/s to prevent glass fiber fracture. Back pressure is maintained at 50 bar to 150 bar for melt homogenization. Internally generated regrind up to 30% by weight is permissible if sieve analysis according to ISO 4610 shows particle sizes from 3 mm to 5 mm and dust is removed.
Where hot runner manifolds are used, manifold temperature is limited to 280 °C and residence times above 10 min at this temperature are avoided to reduce thermal degradation of the heat stabilizer. On production equipment with a 40 mm screw and 22 mm valve pin nozzles, black specks from carbon black agglomeration have been observed when manifold dead spots exceed a 45° flow angle; smooth transitions without sharp elbows are required. Fiber-rich weld lines reduce tensile strength to approximately 50% to 60% of the bulk value; gate locations should be shifted so that the weld line forms in low-stress regions.
In automotive fluid handling, the PA12 matrix resists long-chain aliphatic hydrocarbons, and low-temperature impact toughness is measured at 5 kJ/m² at −30 °C per ISO 179-1/1eA. Comparative fuel permeation should be generated according to SAE J2260 or ISO 1817. The grade is not recommended for contact with concentrated hydrochloric acid, zinc chloride solutions above 50 °C, or sulfuric acid above 10% concentration due to stress-cracking risk; constant-strain evaluation according to ISO 22088-3 is required before exposure to such media.
Regulatory status is available from the supplier certificate; the grade is supplied under REACH (EC) No 1907/2006 registration obligations for the European market. RoHS compliance should be verified per RoHS 2011/65/EU through the supplier product safety data sheet. Glass fiber used in the compound typically has median fiber diameter of 10 µm to 14 µm according to ISO 1888; pellets do not create respirable fiber during normal handling, but machining molded parts requires dust extraction.
On production-scale injection molding machines with clamp force between 600 kN and 1,000 kN and shot weights from 20 g to 80 g, cycle time for PA12-GF30 clips is controlled by mold cooling rather than plasticating capacity. Gate freeze time can be estimated from part wall thickness squared; a 2 mm wall typically requires hold time of 6 s to 10 s at 80 °C mold temperature. Cavity pressure sensors placed near the gate improve switchover consistency and reduce batch-to-batch variation.
When benchmarked against unfilled PA12, the glass fiber reinforcement increases density from 1.01 g/cm³ to 1.23 g/cm³ and raises heat deflection temperature from approximately 50 °C to 80 °C at 1.8 MPa. Comparing the stiffness at an equivalent 30% glass fiber loading, dry tensile modulus of a typical PA66-GF30 compound is 9,000 MPa to 10,000 MPa per ISO 527-1/-2, while VESTAMID® LX9117 BK is 2,300 MPa. The lower modulus reduces snap-fit insertion force but also lowers load-bearing capacity under continuous stress. Against a glass-filled PA66 compound, VESTAMID® LX9117 BK retains a lower density and a lower saturated moisture uptake. Selection therefore depends on whether the part requires maximum stiffness and heat deflection temperature or lower moisture sensitivity and better dimensional stability in humid environments. Published data for this specific configuration is limited; direct side-by-side testing under the end-use thermal and chemical conditions is required for substitution decisions.
