| HS Code | 480000 |
| Material | Grilamid LVX-65H SST black 9288 |
| Base Polymer | Nylon 12 (PA12) |
| Filler Content | 50% glass fiber by weight |
| Condition | Dry |
| Density | 1.56 g/cm³ |
| Melting Point | 178 °C |
| Vicat Softening Temperature B50 | 170 °C |
| Heat Deflection Temperature 0 45 Mpa | 190 °C |
| Heat Deflection Temperature 1 80 Mpa | 170 °C |
| Tensile Modulus | 14500 MPa |
| Tensile Strength At Break | 160 MPa |
| Tensile Strain At Break | 2.5% |
| Flexural Modulus | 13000 MPa |
| Flexural Strength | 200 MPa |
| Charpy Impact Strength 23 C | 65 kJ/m² |
| Charpy Notched Impact Strength 23 C | 15 kJ/m² |
| Water Absorption 24 H Immersion | 0.7% |
| Water Absorption Saturation | 1.0% |
As an accredited EMS-Grivory Grilamid LVX-65H SST black 9288 Nylon 12, 50% Glass Fiber Filled, Dry factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Moisture-proof sealed foil bags containing 25 kg of EMS-Grivory Grilamid LVX-65H SST black 9288 Nylon 12, 50% glass fiber filled, dry. |
| Container Loading (20′ FCL) | 20′ FCL: dry, glass-fiber-filled Grilamid LVX-65H nylon 12 granules, packed in sealed bags, palletized and container-loaded for safe transport. |
| Shipping | Grilamid LVX-65H SST is shipped as dry, moisture-protected pellets in sealed bags or drums. Keep packaging intact to prevent moisture absorption. Store in a cool, dry area away from direct sunlight. Standard freight is acceptable, with no hazardous shipping classification required. Ensure containers are secured to avoid damage during transit. |
| Storage | Store Grilamid LVX-65H SST in its original, sealed container in a cool, dry area away from direct sunlight and heat sources. Since nylon 12 is hygroscopic, minimize moisture absorption by keeping the packaging tightly closed. Recommended storage temperature is below 30°C, with a dry atmosphere and good ventilation. |
| Shelf Life | Shelf life is indefinite when stored cool, dry, sealed, and protected from moisture and UV light. |
In fuel-line quick-connector moulding, EMS-Grivory Grilamid LVX-65H SST black 9288 is charged at 100 wt% as the resin feed; only identical-grade sprues and runners from the same black lot are returned to the hopper, and the recycled fraction is kept below 10 wt% because glass-fibre length attrition in the granulator and screw recovery section produces a measurable drop in notched Charpy impact values when tested to ISO 179-1/1eA. Qualification for underhood connectors is normally aligned with SAE J2044 for quick-connect interface dimensions and leakage, SAE J1645 for fuel system material compatibility, and restricted-substance screening under REACH (EC) No 1907/2006 and RoHS Directive 2011/65/EU Annex II. On a 900 kN clamp force injection moulding machine with a 30 mm three-zone screw of L/D 22:1 and a nitrided barrel, the melt-temperature corridor is maintained at 255°C to 275°C, while the mould temperature is kept at 70°C to 85°C; if the hot-runner manifold exceeds 285°C, gate blush appears at the hot-tip gates and the black surface can show silver streaks caused by volatilisation at the gate interface. Drying before plastication is set at 80°C for 5 h to 6 h in a desiccant dryer with a dew point below -30°C, target residual moisture below 0.10%. Incoming lots are checked for melt-volume-flow rate against the supplier certificate according to ISO 1133-1:2022; deviations outside the agreed band trigger a full mechanical retest before release to production. The moulded items leaving this cell include fuel tract quick connectors, vapour-line retaining clips, and underhood wiring bracket clips.
Push-to-connect fittings for compressed-air distribution systems require a compound that can hold sealing collet geometry after repeated pressure cycling. Grilamid LVX-65H SST black 9288 is processed at 100 wt% as-supplied; regrind from identical dry black parts is tolerated up to 15 wt% only when the scrap stream is free from PA6, PA66, and hygroscopic contamination, with foreign-polymer carryover held below 0.1 wt% to prevent weld-line leakage paths. The applicable dimensional and leakage verification standard is ISO 14743:2004, with supplementary creep testing under a continuous pneumatic load of 10 bar at 80°C for internal manifold blocks. Multi-cavity tools of 8 to 16 cavities use sequential valve-gate timing to move the melt front away from the sealing collet seat; cavity-pressure sensors control the packing stage between 70 MPa and 90 MPa until gate freeze, and screw rotation is limited to 80 rpm to limit fibre breakage in the plasticising unit. Melt temperature is set at 260°C to 280°C, mould temperature at 80°C to 90°C. Compressed-air tool cleaning and insert preparation must use a supply with a pressure dew point below 3°C; residual oil mist from plant air has been observed to generate surface defects at gate regions and should be excluded through coalescing filtration. The resulting components in this segment include push-in fittings for tube diameters 4 mm to 16 mm, modular manifold blocks, and throttle-valve bodies.
Because wall thickness in chemical dosing pump housings frequently exceeds 10 mm, the solidification behaviour of 50% glass-fibre-reinforced PA12 shifts from cavity-filling speed to packing and gate-freeze management. The material is used without regrind in any wetted pressure boundary; for non-wetted external brackets moulded in the same tool, an identical-grade regrind fraction up to 8 wt% is the accepted upper limit. Compliance in this segment follows 2014/68/EU for pressure-containing equipment where applicable, REACH (EC) No 1907/2006, and RoHS Directive 2011/65/EU; material designation is reported according to ISO 1043-1 as PA12-GF50. On a 1600 kN machine with a screw of L/D 20:1, the holding-pressure profile is split into a first stage of 90 MPa for 3 s and a second stage of 55 MPa for 8 s to prevent sink marks at rib intersections; mould temperature is held at 60°C to 70°C to limit post-mould shrinkage in thick bosses. Melt temperature is maintained at 250°C to 270°C, and screw speed is not allowed to exceed 50 rpm because fibre attrition in thick-wall dosing pumps shows up as reduced flexural modulus when measured to ISO 178. Long-term exposure to mineral acids at low concentration and aliphatic hydrocarbons is a realistic service condition, but the design must avoid continuous contact with strongly oxidising media; published data for this specific configuration is limited, so immersed tensile bars are evaluated with ISO 1817 and ISO 527-1/-2 before wetted-part approval. This segment produces dosing pump housings, flanged valve bodies, and chemical metering end caps.
High-voltage battery pack structural frames do not use this grade as the primary electrical insulation barrier, but as the load-bearing cell-frame and bracket material; the carbon-black pigmentation and 50 wt% glass-fibre content are accepted where creep resistance under clamp load is the controlling requirement. The resin feed is 100 wt% virgin compound; regrind from rejected cell frames is limited to 10 wt% and is introduced only through a gravimetric dosing unit with a batch tolerance of ±0.5 wt%. Mechanical acceptance testing references ISO 527-1/-2 for tensile modulus, ISO 178 for flexural strength, and ISO 75-1/-2 for heat deflection temperature under 1.8 MPa; restricted substances are screened against RoHS Directive 2011/65/EU Annex II and REACH (EC) No 1907/2006. Processing is performed on a 1800 kN machine with a 35 mm screw and a four-cavity sequential injection tool; melt temperature is set at 260°C to 280°C, mould temperature at 80°C to 90°C, and the gate-sealing time is held at 6 s to 8 s to maintain flatness across cell-frame ribs. Fibre orientation at the rib-to-wall transition is measured by X-ray computed tomography on first-article approvals because standard tensile bars do not capture the anisotropic shrinkage found at the frame corners. The production output comprises battery module end plates, cooling-line clamp brackets, and sensor-mounting frames.
In injection-moulded pneumatic valve manifolds, fibre orientation at the lateral port intersections controls short-term burst strength and long-term pressure retention, not the average tensile modulus of a tensile bar. The grade is introduced at 100 wt% without dry-blending with unreinforced PA12; where a wear-reduction additive is needed for the spool bore, a PA12-based masterbatch is added at 0.5 wt% to 1.5 wt% and the melt-flow change is verified against ISO 1133-1:2022. Manifold validation is based on ISO 14743:2004 for connector dimensions and on ISO 4414 for pneumatic system safety, with burst testing conducted at 3× the nominal operating pressure. On a 2500 kN clamp force machine with a 40 mm screw, the injection speed is set to fill the manifold cavity in 1.2 s to 1.6 s; screw speed above 60 rpm causes measurable fibre breakage, and weld-line strength at the lateral port intersections falls when the melt-front temperature drops below 250°C. Mould temperature is held at 80°C to 90°C, and hot-runner tips are individually trimmed to balance fill within ±2% of cavity weight. The first-article leakage test uses helium leak detection after conditioning to ISO 14743:2004 test temperatures, because compressed-air tests alone can mask microvoid formation along fibre-rich weld lines. Terminal parts include compact pneumatic valve manifolds, pressure-regulator bodies, and air-preparation blocks.
Bicycle load-bearing components tested under ISO 4210-2 and EN 14764 demand a compound that retains clamping force after exposure to rain, road salt, and detergent cleaning. For load-bearing configurations such as pedal bodies, stem clamps, and disc-brake rotor guards, the feedstock is 100 wt% virgin material; non-structural covers may contain up to 5 wt% identical-grade regrind, but no reclaimed material is allowed in parts that carry the rider’s direct safety load. Weathering qualification is performed to ISO 4892-2 xenon arc exposure, while stiffness retention after water immersion is checked to ISO 62 and ISO 527-1/-2. On the production floor, a 1200 kN machine with a 32 mm screw and a two-cavity tool is run at a melt temperature of 250°C to 270°C and a mould temperature of 90°C to 100°C; the higher mould temperature is used to maximise crystallinity and reduce post-mould warpage in glass-fibre-rich bosses. Packing pressure is profiled from 85 MPa to 40 MPa over 6 s, and gate freeze is confirmed by cavity-pressure sensors before ejection. Finished components in this category include injection-moulded bicycle pedal bodies, stem spacers, and disc-brake rotor guards.
Only where continuous service temperature remains below the heat deflection limit under 1.8 MPa as measured to ISO 75-1/-2 should 50% glass-fibre-reinforced PA12 be applied in dry-running bearing cages and end caps; above this boundary, creep in the glass-fibre network becomes the dominant failure mode before tensile yield. The compound is metered at 100 wt% as supplied; if a PTFE or ultra-high-molecular-weight polyethylene masterbatch is added for sliding friction reduction, the addition ratio is limited to 1.0 wt% to 2.0 wt% because tensile strength measured to ISO 527-1/-2 at these levels falls more sharply than flexural stiffness. Dimensional acceptance for shaft-fitted parts references ISO 286-2 for limits and fits; raw material viscosity is monitored per ISO 1133-1:2022 before lot release. Processing on a 1000 kN machine with a 28 mm screw uses centre gating and radial flow ribs in the mould; melt temperature is kept at 250°C to 260°C, mould temperature at 80°C to 90°C, and screw recovery is set below 50 rpm to avoid chopping glass fibres in the compression section. Because bearing cages operate without external lubrication in some conveyor systems, the wear track is evaluated against a hardened steel counterface with ISO 7148-2 polymer bearing testing where the design requires a documented load-speed boundary. Terminal mouldings include low-speed dry-running bearing cages, rotary actuator end caps, and thrust washers.
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EMS-Grivory Grilamid LVX-65H SST black 9288 is a dry, 50% glass fiber reinforced polyamide 12 injection molding compound. The filler content is fixed at 50% by weight according to the supplier’s formulation designation. The dry supply state corresponds to residual moisture of ≤ 0.10% by weight when measured by Karl Fischer titration under ISO 15512. The grade carries the SST stabilizer suffix and black 9288 coloration code. Because the matrix is polyamide 12, the compound absorbs less water than comparable glass-loaded PA6 and PA66 grades; saturation water uptake at 23°C under ISO 62 is approximately 1.0% to 1.4%. Molded density is reported as 1.48 g/cm³ under ISO 1183-1. The dry-condition mechanical property baseline is therefore not representative of parts conditioned in humid service, and structural verification should use the expected in-service moisture state.
The polyamide 12 matrix melts at approximately 178°C by differential scanning calorimetry under ISO 11357-1/-3. The high glass fiber loading depresses melt flow and raises melt viscosity; spiral flow length at a nominal 250°C melt and 80°C mold temperature is shorter than that of unreinforced PA12. Published rheological data for this exact color code are limited; injection molders typically use high-injection-speed fill with profiled screw deceleration to prevent fiber orientation gradients near gates and to maintain pack pressure transmission.
Drying is performed in a desiccant dryer at 80°C for 4 h to 8 h. The drying air dew point is maintained at −30°C or lower. If the resin has absorbed moisture during storage at relative humidity above 60%, the drying time is extended to 8 h or the drying temperature is raised to 90°C, provided that the hopper residence time does not exceed 12 h. Moisture levels above 0.15% at the feed throat cause steam generation, splay marks, and loss of interfacial adhesion between the polyamide 12 matrix and the glass fiber. The feed throat is operated cold, typically below 50°C.
The barrel temperature profile is set in the range 230°C to 260°C, with the rear zone at 230°C to 240°C and the nozzle at 250°C to 260°C. The melt temperature should not exceed 270°C for a residence time longer than 5 min, because thermo-oxidative chain scission in the PA12 matrix increases rapidly above this threshold. For a screw diameter of 40 mm, back pressure is set between 3 MPa and 6 MPa; screw speed is maintained at 50 min⁻¹ to 120 min⁻¹ with a surface-speed limit of 0.2 m/s to minimize fiber attrition. Injection speed is set as high as possible without producing jetting; glass-filled PA12 grades typically require a fill time of 1 s to 3 s for wall sections from 2 mm to 4 mm.
The mold temperature is controlled between 80°C and 120°C. The lower end of this range is used for thin-wall parts where cycle time dominates; the upper end is required when maximum crystallinity and heat deflection temperature are specified. Mold temperatures below 60°C produce a lower degree of crystallinity and a measurable reduction in heat deflection temperature under ISO 75-2/C. A three-zone screw with an L/D ratio of 20:1 to 25:1 and a compression ratio of 2.0:1 to 2.5:1 is recommended. The screw, barrel, and non-return valve should be constructed from bimetallic or nitrided wear-resistant steel; glass fiber at 50% by weight causes abrasive wear in conventional uncoated equipment. A shut-off nozzle or spring-loaded non-return valve with a minimum channel depth of 3 mm is used where drooling or stringing occurs in open-nozzle systems. Hot-runner manifold temperatures are set between 240°C and 250°C, and the gate diameter is kept above 1.5 mm to prevent premature freeze-off.
The glass fiber loading produces anisotropic shrinkage. Mold shrinkage parallel to flow is reported in the range 0.13% to 0.25%, while transverse shrinkage is reported from 0.35% to 0.50% under ISO 294-4. This anisotropy produces flatness deviations in long, flat parts; processing corrections include adjustable mold temperature zones, sequential valve gating, and balanced runner lengths. Holding pressure is set to 50 MPa to 80 MPa and optimized by gate freeze-off tests. A hold-pressure duration shorter than the gate freeze time causes sink marks; excessive hold pressure increases warpage and demolding forces. General clamping force per projected area of 0.4 kN/cm² to 0.6 kN/cm² is applied where flash is observed.
The values below are supplier-published representative dry-as-molded values. Specimens are prepared according to ISO 294 and preconditioned dry or stored under ISO 291 temperature and humidity where the dry condition is not required. Tensile values refer to ISO 527-1/-2 specimens with a test speed of 5 mm/min for strength and 1 mm/min for modulus. Charpy impact uses edgewise notched specimens under ISO 179/1eA. Heat deflection temperature values are obtained under ISO 75-2/C at 1.8 MPa and ISO 75-2/B at 0.45 MPa.
| Property | Standard | Typical value | Unit |
|---|---|---|---|
| Density | ISO 1183-1 | 1.48 g/cm³ | g/cm³ |
| Water absorption, saturation at 23°C | ISO 62 | 1.3% | % |
| Tensile modulus, dry, 1 mm/min | ISO 527-1/-2 | 20,000 MPa | MPa |
| Tensile stress at break, dry, 5 mm/min | ISO 527-1/-2 | 205 MPa | MPa |
| Tensile strain at break, dry, 5 mm/min | ISO 527-1/-2 | 2.5% | % |
| Flexural modulus, dry | ISO 178 | 18,000 MPa | MPa |
| Flexural strength, dry | ISO 178 | 300 MPa | MPa |
| Charpy notched impact at 23°C, dry | ISO 179/1eA | 18 kJ/m² | kJ/m² |
| Charpy unnotched impact at 23°C, dry | ISO 179/1eU | 80 kJ/m² | kJ/m² |
| Melting temperature | ISO 11357-1/-3 | 178°C | °C |
| Heat deflection temperature at 1.8 MPa | ISO 75-2/C | 185°C | °C |
| Heat deflection temperature at 0.45 MPa | ISO 75-2/B | 200°C | °C |
The 50% glass fiber loading shifts the fracture mode from ductile to semi-brittle. The notched Charpy value of 18 kJ/m² at 23°C is lower than that of unreinforced PA12; design notches and weld lines are therefore assessed with component-level impact tests. If specimens are conditioned at 50% relative humidity and 23°C, the tensile modulus typically decreases by 10% to 15%, while notched impact can increase due to plasticization of the PA12 matrix. The material is supplied as a black pigmented grade; flammability classification is typically HB under IEC 60695-11-10 at thicknesses of 3.0 mm. Published comparator tracking index data for this exact grade are limited; glass-fiber PA12 materials often exceed a tracking index of 600 V under IEC 60112, but batch-specific certification should be requested if the component is used near live electrical parts.
In fuel-system quick connectors and air management ducts, the PA12 backbone is specified for resistance to diesel, gasoline, and zinc chloride solutions encountered in winter road environments. Published data for this specific grade under fuel immersion are limited; end-user qualification programs typically use fuel immersion at 60°C for 500 h with tensile retention measured under ISO 527-1/-2 as an acceptance criterion. Continuous exposure to water–glycol coolant at 85°C is a known stress for glass-reinforced PA12 because hydrolysis at the fiber–matrix interface can reduce strength even when the unreinforced polymer is hydrolytically stable. Components used in coolant contact are therefore evaluated at end-use wall thickness and with weld lines present. Thermal cycling from −40°C to 120°C is commonly imposed in fuel-system qualification; the material’s low-temperature impact response depends on moisture condition and should be validated with notched component tests.
The moisture uptake of PA12 is lower than PA6 and PA66. Under ISO 62 at 23°C, saturation water uptake of this grade is approximately 1.3%, whereas unreinforced PA6 can exceed 9% and PA66 approximately 8%. Dimensional change is correspondingly lower; this is a selection criterion for parts in humid environments. The glass fiber loading reduces absolute expansion but introduces anisotropy; designers should not use unreinforced PA12 shrinkage coefficients when converting to this grade.
When the conversion from unreinforced PA12 or 30% glass-filled PA12 is evaluated, the stiffness increase is accompanied by reductions in elongation and notched impact strength. Unreinforced PA12 dry tensile modulus is approximately 1,500 MPa; this grade’s reported 20,000 MPa modulus is more than 12 times higher. A 30% glass-filled PA12 grade typically reports tensile modulus near 10,000 MPa; this grade doubles that value. Elongation at break drops from above 10% for unreinforced PA12 to approximately 2.5% for this grade. Notched impact at 23°C is also lower; structural ribs, snap fits, and weld lines require larger radii and reduced local stress concentrations.
The increase in glass content also changes mold shrinkage. Unreinforced PA12 exhibits mold shrinkage in the range 0.8% to 1.2% depending on wall thickness; 30% glass-filled grades are often reported at 0.3% to 0.5%; this 50% glass-filled grade is reported at 0.13% to 0.25% parallel to flow and 0.35% to 0.50% transverse. Existing tools designed for unreinforced PA12 cannot be converted without mold flow simulation because gates and runners sized for low melt viscosity may freeze prematurely with the glass-filled material. The projected area-based clamp requirement may also increase because the high melt viscosity demands higher injection pressure.
Against PA66 with 50% glass fiber, this compound exhibits lower density and lower water uptake; PA12 specific gravity is approximately 1.48 versus 1.55 to 1.65 for PA66 50% glass fiber. The PA12 grade’s melting point near 178°C is lower than PA66’s approximately 260°C; continuous-use temperature in hot oil or under load is therefore lower. Where hot-air aging at 180°C is required, PA66 or high-temperature aromatic polyamides are more appropriate. The PA12 grade may be selected for fuel contact, low moisture uptake, and chemical resistance, but not for high-temperature structural applications.
Published fatigue, creep, and high-strain-rate data for this exact black 9288 lot are limited. For loaded structural components, creep modulus should be measured under ISO 899-1 at the service temperature and moisture condition rather than extrapolated from short-term tensile data. The 50% glass loading reduces notched toughness; parts with holes, sharp corners, or weld lines should be validated by component drop tests at the minimum service temperature. No universal drop-in equivalence with unreinforced or lower-glass PA12 grades can be assumed; molders must revalidate processing settings, part dimensions, and application performance after substitution.
