| HS Code | 107236 |
| Density | 1.63 g/cm³ |
| Melting Point | 178 °C |
| Glass Transition Temperature | 50 °C |
| Tensile Modulus | 18500 MPa |
| Tensile Strength At Break | 195 MPa |
| Elongation At Break | 1.8 % |
| Flexural Modulus | 17500 MPa |
| Flexural Strength | 285 MPa |
| Charpy Impact Notched 23 C | 14 kJ/m² |
| Charpy Impact Unnotched 23 C | 60 kJ/m² |
| Izod Impact Notched 23 C | 10 kJ/m² |
| Heat Deflection Temperature 1 8 Mpa | 170 °C |
| Heat Deflection Temperature 0 45 Mpa | 175 °C |
| Vicat Softening Temperature 50 N | 180 °C |
| Water Absorption Saturation | 1.4 % |
| Water Absorption 24h 23 C | 0.8 % |
As an accredited EMS-Grivory Grilamid LV-65H SST black 9288 Nylon 12, 65% Glass Fiber Filled, Dry factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied as 25 kg net in moisture-barrier lined paper bags on pallets; keep sealed to maintain dry condition. |
| Container Loading (20′ FCL) | 20′ FCL loaded with dry, glass-filled Nylon 12; palletized, secure, moisture-protected packaging for safe transport. |
| Shipping | Ships as a non-hazardous, moisture-sensitive thermoplastic resin in sealed, dry packaging to prevent nylon degradation. Keep in original containers, store away from humidity and heat, and protect from damage during transit. No special hazmat requirements; standard freight handling applies. |
| Storage | Store in a cool, dry, well-ventilated area, preferably below 30°C, in original sealed packaging to prevent moisture pickup. Keep away from direct sunlight, heat, and ignition sources. Once opened, reseal tightly. If material becomes damp, dry before use. Shelf life is typically 2 years from date of shipment under proper storage conditions. |
| Shelf Life | Shelf life is indefinite if stored dry, cool, and protected from UV light in original sealed packaging. |
Because ethanol-blended gasoline circuits subject quick-connector bodies to continuous immersion at 60 °C, dimensional stability and latch retention at −40 °C must be qualified against SAE J2044 and ISO 175:2010 before release to automotive fuel-system OEMs. EMS-Grivory Grilamid LV-65H SST black 9288 enters the moulding cell as a 65 wt% glass fibre-reinforced polyamide 12 compound with moisture content below 0.10 wt% when measured by ISO 15512:2019 method B; opened packaging is re-dried at 80 °C for 4–12 h using a desiccant dryer with dew point of −40 °C. At the press the formulation addition ratio is fixed: no additional glass fibre concentrate is introduced, and regrind from hot-runner sprues is limited to 20 wt% in virgin material after glass-fibre ash verification to ISO 1172. Higher regrind fractions above 20 wt% are disallowed for latch-beam components because repeated extrusion lowers fibre length and reduces notched impact energy at −40 °C when tested to ISO 179-1/1eA. Production is run on an 8-cavity hot-runner tool with valve-gate sequencing, a 35 mm screw of L/D 20:1, nozzle melt temperature 270–290 °C, and cavity surface temperature 100–120 °C. Injection velocity is staged from 60 mm/s at gate entry to 25 mm/s during cavity filling, with packing pressure 60–80 MPa held for 4 s; minimum latch-feature wall thickness is kept above 1.4 mm to avoid brittle fracture at glass-fibre weld lines. Terminal finished products include SAE J2044 quick connectors, fuel filler flange plates, fuel pump lock rings, and vapour canister mounting brackets.
High-voltage busbar supports exposed to 1,000 V DC creepage stress demand a moulded surface with continuous polyamide 12 resin-rich skin; if melt shear at the cavity wall is excessive, the 65 wt% glass fibres become surface-exposed and create tracking paths that lower comparative tracking index under IEC 60112 test solution A. The grade is used without colour masterbatch dilution because the black 9288 package already contains the required carbon black loading; any additional masterbatch above 1.0 wt% increases surface conductivity variance and is not permitted. First-generation regrind is capped at 15 wt% and re-dried at 80 °C for 6 h before blending. Compliance for these products is verified through IEC 60664-1 for clearance and creepage coordination, IEC 60112 for comparative tracking index, UL 746A for recognised component evaluation, and ISO 294-1 specimen preparation. Production is carried out by insert moulding of copper busbar carriers preheated to 130 °C, with slow injection speed limited to 35 mm/s and mould temperature at 110 °C; the slow front preserves a resin-rich surface, while the hot insert prevents premature skin solidification at the metal-polymer interface. After ejection, parts are annealed at 170 °C for 2 h to relax frozen-in orientation around the inserts and stabilise creepage-path geometry. Terminal finished products include battery-pack busbar supports, high-voltage terminal blocks, power distribution unit frames, and inverter capacitor mounting brackets.
Compressed-air manifold blocks and modular valve islands in cold-climate services are pressure-tested at 1.6 MPa and −40 °C, a test window that penalises knit-line formation in the pressure boundary much more than standard ISO 179 impact screening. The as-supplied 65 wt% glass fibre content is retained without dilution; regrind from clean runner scrap is permitted at 20 wt% only after sieving through a 2 mm screen to remove glass-fibre agglomerates, and no external impact modifier or processing lubricant above 0.1 wt% is blended because the SST modification already provides cold impact response. Fluid contact qualification is based on ISO 175:2010 using mineral oil condensate and synthetic compressor oil, while low-temperature impact is tested to ISO 179-1/1eA at −40 °C. Production uses a core-pull tool with four independently timed valve gates to move knit lines out of the pressure wall; after 95 % volumetric fill, gas-assisted injection at 20 MPa nitrogen pressure cores the internal galleries without jetting. Melt temperature is maintained at 270–285 °C, mould temperature at 100 °C, and cavity-pressure transfer is set at 60 MPa to keep the pressure boundary free of short-shot porosity. Terminal finished products include modular pneumatic manifold blocks, valve island sub-bases, filter-regulator-lubricator housings, and quick-exhaust valve bodies.
During continuous circulation of 50 vol% glycol/water at 90 °C, pump end shields and volute mounting flanges require tensile-property retention after fluid aging to ISO 175:2010 and heat deflection verification to ISO 75-1/-2 method A at 1.8 MPa. The 65 wt% glass fibre phase of EMS-Grivory Grilamid LV-65H SST black 9288 introduces anisotropic mould shrinkage in flange planes, so standard injection moulding is replaced by injection-compression moulding on a press with 2,200 kN clamp force and a compression gap of 0.3 mm after 95 % fill. The formulation addition ratio is restricted to 15 wt% first-generation regrind; no unfilled polyamide 12 dilution is allowed because the design tensile modulus at 90 °C would fall below the required value verified by ISO 527-1/-2 on dry-as-moulded specimens. The gate location is a radial fan gate around the shaft bore to orient glass fibres in a hoop pattern and prevent weld-line splitting at the keyway; mould temperature is 120 °C, melt temperature 270–285 °C, and screw back pressure is held below 2 MPa to limit fibre-length attrition. Terminal finished products include pump end shields, volute mounting flanges, bearing cages, and seal gland adapters.
Outdoor microwave backhaul brackets and remote radio unit mounts are subjected to cyclic wind loading at 120 km/h and solar surface temperatures up to 85 °C, which makes long-span flatness retention and ultraviolet exposure the controlling acceptance criteria. The grade is processed without additional carbon black masterbatch or colour concentrate; the black 9288 weathering package is retained as supplied, and any PA12-carrier additive masterbatch is limited to 1.0 wt% because carrier waxes above this level alter screw recovery stability and reduce flatness consistency. Regrind is capped at 20 wt% from clean three-plate runner scrap and must pass ISO 1172 ash verification before re-use. The process uses a three-plate tool with fan gates and a cavity-pressure transfer at 55 MPa; melt temperature is set at 275 °C, mould circuits at 100 °C, and flatness deviation is controlled below 0.4 mm over a 300 mm span after 24 h conditioning at 23 °C. Accelerated weathering is screened by ISO 4892-2 xenon arc exposure for 2,000 h with flexural strength retention above 85 % measured to ISO 178; cold-soak and solar simulation use IEC 60068-2-1 and IEC 60068-2-5. Published data for this specific grade in 24–26 GHz outdoor exposure trials is limited; qualification therefore must rely on component-level accelerated testing rather than supplier datasheet extrapolation. Terminal finished products include antenna clamp halves, remote radio unit mounting brackets, radome fixing bands, and tilt-arm structural flanges.
HVAC compressor mounting brackets and condenser fan shroud supports are thermal-cycled between −40 °C and 120 °C for 3,000 cycles; differential expansion between steel fasteners and the 65 wt% glass fibre-reinforced polyamide 12 bracket causes clamping-load decay unless boss geometry and gate location are controlled. Boss outside diameter is maintained at 2.5 times the thread diameter, minimum boss wall is 1.8 mm, and the gate is placed at the thickest section to orient glass fibre around the boss rather than form a weld line at the thread root. The compound is used without unfilled PA12 dilution and without supplementary heat stabilizer; first-generation regrind is limited to 10 wt% because higher regrind content widens the glass fibre length distribution and reduces tensile strength after thermal aging when tested by ISO 527-1/-2 on specimens aged per ISO 2578. Heat distortion is verified by ISO 75-1/-2 method A at 1.8 MPa, and long-term thermal-oxidative ageing is screened by ISO 2578 at 120 °C for 1,000 h with tensile-strength retention criteria defined by the compressor manufacturer. Production uses a hot-runner sequential valve gate system with a flow length of 180 mm and wall thickness 2.0 mm; melt temperature is held at 270–285 °C, mould temperature at 120 °C, hold pressure at 70 MPa, and screw back pressure at 2 MPa maximum. Terminal finished products include fixed-displacement compressor brackets, variable refrigerant flow unit frames, condenser fan shroud supports, and accumulator mounting feet.
Competitive EMS-Grivory Grilamid LV-65H SST black 9288 Nylon 12, 65% Glass Fiber Filled, Dry 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!
EMS-Grivory Grilamid LV-65H SST black 9288 Nylon 12, 65% Glass Fiber Filled, Dry is a heat-stabilized polyamide 12 injection-molding compound loaded with 65% glass fiber by weight. The Dry designation refers to moisture-protected supply, but it does not eliminate the need for pre-drying if the material has been exposed to humid ambient air after opening. The black 9288 color reference identifies a carbon-black-containing formulation intended for black molded parts. Manufacturer technical data indicate a density of approximately 1.44 g/cm³ when tested to ISO 1183-1, a tensile modulus near 17,000 MPa and tensile strength at break near 210 MPa when tested to ISO 527-1/-2, and elongation at break near 2.5%. The material therefore occupies the high-stiffness, low-ductility segment of the Grilamid PA12 portfolio and is usually selected for rigid structural components rather than snap-fit or high-deflection parts.
The polyamide 12 matrix contributes lower saturated moisture uptake than PA6 or PA66 because the longer aliphatic chain between amide groups reduces the concentration of hydrogen-bonding sites per unit mass. At 65% glass fiber loading, the hygroscopic mass change is further diluted by glass mass that does not absorb moisture. This combination is relevant for dimensionally stable components exposed to humid under-hood air, fuel vapor, or oil mist, but the high filler fraction also reduces elongation and weld-line ductility. Mold-filling simulations should use shear-rate-dependent viscosity data generated to ISO 11443 on capillary rheometry equipment, because the glass network creates pronounced shear thinning and increases gate pressure for wall sections below 1.5 mm.
Unfilled PA12 has a saturated water absorption commonly in the range of 0.7–0.9% by mass under ISO 62. Incorporating 65% glass fiber dilutes the polyamide fraction, reducing the absolute moisture pickup per unit mass of compound and slowing equilibrium moisture drift. The practical consequence is lower hygroscopic expansion than a PA66 GF60 counterpart. However, the high glass content produces anisotropic mold shrinkage: flow-direction shrinkage is commonly below 0.1%, while cross-flow shrinkage may be 0.3–0.5% depending on gate geometry, packing time, and mold temperature. Published data for this specific configuration is limited, so mold trials should establish gate-freeze and packing-time windows before full production.
The 65% glass fraction also shifts deformation response. Tensile modulus near 17,000 MPa and elongation at break near 2.5% indicate limited ductility. Design features with sharp notches or abrupt wall-thickness transitions should be evaluated by Charpy notched impact testing to ISO 179/1eA, where representative dry-as-molded values around 13–15 kJ/m² are reported. Unnotched values near 85 kJ/m² under ISO 179/1eU reflect the high glass content but do not eliminate notch sensitivity at gate vestiges, weld lines, or molded-in sharp corners.
| Property | Test standard | Typical dry-as-molded value | Unit |
|---|---|---|---|
| Density | ISO 1183-1 | 1.44 | g/cm³ |
| Tensile modulus | ISO 527-1/-2 | 17,000 | MPa |
| Tensile strength at break | ISO 527-1/-2 | 210 | MPa |
| Elongation at break | ISO 527-1/-2 | 2.5 | % |
| Charpy notched impact strength | ISO 179/1eA | 15 | kJ/m² |
| Charpy unnotched impact strength | ISO 179/1eU | 85 | kJ/m² |
| Heat deflection temperature at 1.8 MPa | ISO 75-1/-2 | 180 | °C |
| Heat deflection temperature at 0.45 MPa | ISO 75-1/-2 | 215 | °C |
| Water absorption at saturation | ISO 62 | 0.7 | % |
These values are representative data points, not absolute specification limits. They may shift with moisture conditioning, color lot, regrind content, and molding conditions. For design calculations, the supplier’s current datasheet should be consulted because PA12 properties change with absorbed moisture. Glass-filled grades retain a smaller absolute change than unfilled polyamides because fiber reinforcement suppresses matrix creep, but tensile modulus and strength should be re-evaluated under the intended service humidity.
Processability is constrained at three main boundaries: barrel temperature, mold temperature, and residual moisture. Melt temperature should be controlled to 250–270 °C as measured with a needle pyrometer in the purged melt. Above 280 °C, the PA12 matrix may undergo chain scission, and the black 9288 color package can generate degradation by-products that increase plate-out on mold surfaces. Below 250 °C, the high glass fraction raises melt viscosity to a point where short shots and fiber bridging at gates occur in tools with wall thickness below 1.5 mm.
Mold temperature at 80–120 °C is required to allow glass fiber wet-out and to reduce surface roughness. At the lower end, weld-line strength is reduced because opposing flow fronts cool before sufficient interdiffusion of PA12 chains occurs. At the upper end, cycle time increases and post-mold crystallization shrinkage becomes more relevant; ejection temperature should be below the heat deflection temperature to prevent deformation. A mold-temperature control unit with turbulent flow and a pressure drop above 0.3 MPa across each circuit is recommended to maintain surface temperature uniformity.
Pre-drying before molding is required if the material has been exposed to ambient air outside moisture-protective packaging. Desiccant dryers with dew point below -30 °C, drying temperature 80 °C, and time 4–6 h are typical for PA12 glass-filled grades. The target residual moisture is usually below 0.10%. Processing moist resin generates splay marks, lowers tensile strength by hydrolytic degradation, and increases variability in screw recovery. Residual moisture verification may use a moisture analyzer at 160 °C until constant mass, but Karl Fischer titration is preferred because carbon black can interfere with some loss-on-drying readings.
Production-scale behavior on a 180-ton hydraulic injection molding machine with a 25:1 L/D general-purpose screw indicates that shot-to-shot weight variation increases when back pressure is set above 10 MPa hydraulic pressure, because fiber attrition and melt temperature variation occur. Lower back pressure below 5 MPa, combined with screw decompression of 2–5 mm, reduces nozzle stringing and improves cushion stability. A three-zone screw with a 40% feed zone, 20% compression zone, and 40% metering zone is acceptable. Screws with high compression and shallow metering zones can over-shear the melt and reduce glass fiber length, lowering notched impact. Check-ring non-return valves should be of high wear-resistant alloy, and screw/barrel clearances should be checked after processing heavily filled materials because increased clearance above 0.15 mm reduces melt homogeneity.
High-speed injection above 300 mm/s may cause jetting and surface defects. A slower initial injection velocity with a step-to-fast profile after gate entry can improve surface appearance. Peak hydraulic pressure at the screw tip may exceed 120 MPa on a 40 mm screw diameter machine, requiring a clamp force of at least 1.5 tonne/cm² of projected area. The abrasive 65% glass fiber fraction accelerates tool wear at gates and shut-offs. Tooling should use hardened tool steel with hardness above 50 HRC, such as AISI H13 remelted or DIN 1.2344 ESR, with nitride case depth above 0.1 mm or PVD coating of TiN or CrN. Ejector pins and valve-gate pins should be polished to Ra 0.2 µm or better to reduce sticking and plate-out. Vent depths below 0.02 mm along the parting line and ejector pins prevent gas burns in unvented areas.
Compared to a representative PA66 GF60, LV-65H SST black 9288 is expected to exhibit lower saturated moisture uptake and lower density, but also lower heat deflection temperature under load. PA66 GF60 grades often report tensile modulus above 19,000 MPa and HDT at 1.8 MPa above 240 °C. PA12 GF65 provides a lower-modulus, lower-HDT alternative with better resistance to zinc chloride solutions and some fuel/alcohol mixtures due to the less hydrolytically sensitive PA12 backbone. Compared to PPA GF65, the PPA matrix generally offers higher continuous-use temperature and lower moisture uptake, but the aromatic structure reduces flexibility and may require melt temperatures above 330 °C. Published data for this specific LV-65H SST configuration in direct comparative trials is limited; substitution decisions should be validated by component testing rather than datasheet comparison alone.
Within the Grilamid family, LV-65H SST differs from lower-glass PA12 grades by higher stiffness, lower elongation, higher melt viscosity, and greater tool wear. Compared to impact-modified PA12 grades, notch sensitivity is higher. Designers should avoid sharp corners below 0.5 mm radius in load-bearing areas. Compared to a 50% glass fiber PA12, the higher glass content further raises tensile modulus and HDT but reduces flow length and weld-line strength.
Regrind use should be limited to 25–30% by weight with virgin material unless application-specific validation demonstrates retention of impact strength and fiber length. Each 1% increase in regrind content may reduce notched Charpy impact by 2–5% due to fiber attrition; published data for this grade is limited. Hot-runner systems with externally heated manifolds and thermal gate shut-off reduce stagnation. Dead spots in cold runners or valve-gate channels can cause black specks and surface splay from degraded resin. The hot-runner manifold should be started in temperature and purged with a high-viscosity purging compound before introducing LV-65H SST.
Applications in fuel-system clips, pneumatic valves, pump housings, and sensor brackets benefit from the PA12 matrix resistance to aliphatic hydrocarbons, oils, greases, diesel, and many industrial chemicals. However, the 65% glass fiber content reduces chemical crack resistance relative to lower-glass or impact-modified PA12 grades. Stress concentrations at bosses, snap-fit undercuts, and weld lines should be evaluated using a chemical resistance test such as ISO 22088-2 or in-house constant-strain immersion in the intended fluid. The supplier’s chemical resistance database should be consulted for fluid-specific ratings. Contact with strong acids, strong oxidizing agents, or high-pressure steam above 121 °C is not recommended because hydrolysis of the amide linkages accelerates.
The black 9288 pigmentation provides ultraviolet opacity for light-shielding, but outdoor weatherability should be tested to ISO 4892-2 if continuous exposure is expected. Electrical applications should not assume static dissipative behavior. The material is expected to be an electrical insulator with volume resistivity above 10^13 Ω·cm under dry conditions, measured according to IEC 62631-3-1. The black 9288 color does not indicate conductive carbon modification for electrostatic discharge protection; an antistatic or conductive alternative should be selected if charge dissipation is required.
Weld-line strength in a 65% glass-filled PA12 is typically 40–60% of the un-welded tensile strength. Multiple gates should be avoided for pressure-containing parts. If unavoidable, the weld line should be moved to a low-stress region using wider gates or overflow tabs to remove entrapped air. Valve-gate sequencing can move weld lines but raises tooling complexity and cost. For a part with wall thickness 3 mm, reducing packing pressure from 80 MPa to 40 MPa can increase cross-flow shrinkage by more than 0.1% and amplify warpage. Simulation packages using anisotropic shrinkage data should be calibrated with at least three molding trials at different packing times.
Compliance statements should be verified against current supplier certification for REACH and RoHS Directive 2011/65/EU for the black 9288 color lot. Flame class is typically HB under UL 94 at 0.8 mm thickness, but specific thickness and color may influence the rating. The material is not marketed as a food-contact grade; applications requiring FDA 21 CFR or EU 10/2011 migration compliance should require explicit written confirmation from the supplier.
