| HS Code | 416951 |
| Density | 1.62 g/cm³ |
| Melting Point | 224 °C |
| Tensile Strength | 120 MPa |
| Tensile Modulus | 9400 MPa |
| Elongation At Break | 3 % |
| Flexural Strength | 180 MPa |
| Flexural Modulus | 8500 MPa |
| Charpy Impact Notched | 8 kJ/m² |
| Izod Impact Notched | 5 kJ/m² |
| Heat Deflection Temperature 1 8 Mpa | 185 °C |
| Heat Deflection Temperature 0 45 Mpa | 210 °C |
| Water Absorption Saturation | 0.7 % |
As an accredited EMS-Grivory Grilamid LV-65H FWA nat Nylon 12, 65% Glass Fiber Filled, Conditioned factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in sealed moisture-proof foil bags, each containing 25 kg of conditioned nylon 12 granules. |
| Container Loading (20′ FCL) | One 20′ FCL securely loaded with conditioned Grilamid LV-65H nylon 12, 65% glass fiber filled, on pallets, protected and ventilated. |
| Shipping | This product is shipped in sealed, moisture-barrier packaging to prevent water absorption, which affects performance. Standard dry truck freight is suitable. Handle with care to minimize dust generation from glass fibers; avoid inhalation. Store in a cool, dry area and keep away from open flames or high temperatures. |
| Storage | Store in a sealed original container in a cool, dry place away from direct sunlight, heat sources, and moisture. Since conditioned nylon 12 is hygroscopic, minimize exposure to humid air to prevent property changes. Ideal temperature: below 30°C. Use within two years of manufacture to ensure consistent performance. |
| Shelf Life | Shelf life is generally indefinite when stored in original sealed packaging, kept dry, cool, and protected from sunlight. |
Because the 65% by weight E-glass reinforcement in EMS-Grivory Grilamid LV-65H FWA nat suppresses creep under continuous radial clamp load, fuel system quick connectors molded from the compound are validated against SAE J2044 for male/female interface pull-off force retention after thermal cycling and against ISO 19013-1:2019 for gasoline, diesel, and biodiesel-blended fuel hose assemblies. The industry compliance matrix also includes ISO 527-1/-2:2019 for conditioned tensile properties, ISO 3451-1:2019 for glass-fiber content verification, and SAE J1737 when evaporative emission permeation data are required. The formulation addition ratio is the as-received glass-fiber mass fraction of 65%, verified by ash analysis; no let-down with unfilled PA12 is recommended, because reducing the filler content below 60% by mass produces a measurable drop in weld-line burst strength and increases solvent uptake at the knit line. On production-scale toggle clamp injection presses with 160 t to 220 t clamp force and 25:1 L/D general purpose screws, barrel zones are set at 230°C, 240°C, 250°C, and 255°C from feed to nozzle, with a hot runner manifold held at 255°C and oil-heated tooling at 80°C to 100°C. Cavities are gated at the clip base or connector body end-face, and hold pressure of 60 MPa to 80 MPa is maintained for 3 s to 5 s to prevent sink at the glass-rich core. After molding, parts are conditioned at 23°C and 50% relative humidity per ISO 291 for at least 40 h before burst testing, because dry-as-molded specimens overstate stiffness and under-report impact energy. Terminal finished product types include SAE J2044 quick connectors, in-tank fuel pump mounting flanges, vapor canister brackets, and fuel filter caps for light-duty and heavy-duty engine platforms.
SAE J2360-compliant automatic transmission fluids introduce oxidative and acid-bearing degradation species at continuous oil-sump temperatures between 100°C and 110°C; the 65% glass-fiber mass fraction in EMS-Grivory Grilamid LV-65H FWA nat lowers creep under M8 flange bolt torque to less than 0.5% strain after 1,000 h at 90°C when measured by ISO 527-1/-2:2019, but the anisotropic fiber orientation from flow front collision at the pan corners demands that weld lines are positioned away from bolt bosses. The governing compliance standards for this downstream sector are SAE J2360 for lubricant compatibility, ISO 75-1/-2:2020 for heat deflection temperature at 1.8 MPa, ISO 1183-1:2019 for density, and ISO 62:2008 for water absorption after 24 h immersion. The formulation addition ratio remains fixed at 65% glass fiber by weight as supplied; regrind addition for non-pressure-retaining covers may be tolerated up to 20% by weight of the total shot, provided the regrind is dried identically to virgin pellets and sorted by melt flow index according to ISO 1133-1:2022. On a 350 t hydraulic clamp injection molding machine with a shot weight of 1,240 g, the barrel zones are profiled from 235°C at the throat to 265°C at the nozzle, and the mold is heated to 95°C using pressurized water or oil channels cut into the tool steel. Sequential valve-gated hot runner systems are preferred over cold sub-runners because the high glass content freezes at the gate quickly and raises gate-cold-slug scrap. The injection speed is set to 60 mm/s to 120 mm/s for wall thicknesses of 2.5 mm to 4.0 mm; hold pressure is maintained at 50 MPa to 65 MPa for 8 s to 12 s; cooling time is set to 25 s to 30 s to achieve a demolding temperature below 120°C. Terminal finished product types include automatic transmission oil pans, valve body covers, filter housings, and accumulator piston covers.
Centrifugal pump impellers and diffuser rings in potable-water booster systems use the same 65% glass-fiber loading, but the validation path shifts from hydrocarbon resistance to drinking-water extraction and hydrolysis resistance. The compound is processed at the as-received 65% glass-fiber mass fraction, and no regrind is allowed in potable-water-contact components unless the processor holds a documented closed-loop regrind system audited under the relevant hygiene certification. Industry compliance standards include NSF/ANSI 61 Section 5 for drinking water contact, WRAS BS 6920 for UK water fittings, and ISO 175:2010 for resistance to water and chlorinated water at 50°C. Supplier documentation should be checked for valid NSF/ANSI 61 certification for this specific natural grade, because designation of the test standard alone does not confirm certification. For mechanical design, impeller blade creep rupture is assessed using ISO 527-1/-2:2019 tensile values conditioned at 23°C and 50% relative humidity, while surface wear resistance is evaluated with a Taber Abraser per ISO 5470-1:2021. On an injection molding cell for impellers with a 200 t toggle press and a 50 mm diameter screw, the melt is held at 245°C to 265°C, and the mold is maintained at 90°C to 110°C to crystallize the PA12 matrix sufficiently before ejection. The critical process bottleneck is glass-fiber orientation at the leading edge of the curved impeller vanes; gates are placed at the hub, and the polymer melt is accelerated through the vane cavities at 150 mm/s to 250 mm/s to avoid premature freeze-off and to pack the glass-rich core. After molding, impellers are stress-relieved in a circulating-air oven at 110°C for 2 h to 4 h, followed by conditioning at 23°C and 50% relative humidity for 48 h before bore reaming or hub machining. Terminal finished product types include multistage water pump impellers, diffuser plates, wear rings, and end-suction pump lantern rings.
Under continuous oil-bath operation at 80°C and torque transmission through a steel shaft insert, the 65% glass-fiber content in EMS-Grivory Grilamid LV-65H FWA nat provides a measurably higher tooth-root fracture resistance than unfilled PA12, but the reduction in strain at break introduces a design constraint: gear tooth tip deflection must remain below 0.08 mm to avoid flank wear at speeds above 1,500 min⁻¹. The relevant industry compliance standards for thermoplastic spur and helical gears are ISO 6336-1:2019 for cylindrical gear load-carrying capacity, VDI 2736 Blatt 2:2014 for plastic gear tooth geometry corrections, ISO 178:2019 for flexural modulus, and ISO 527-1/-2:2019 for tensile stress-strain behavior. The formulation addition ratio is the compound’s 65% by weight glass-fiber loading; no additional solid lubricants such as PTFE or graphite are added unless the gear application requires low friction, because blends with external lubricants can lower the weld-line strength of the hub by more than 12%. The production process for industrial gearwheels typically uses a 120 t to 180 t injection molding machine with a 35:1 L/D barrier screw and a shut-off nozzle to prevent drool caused by the low melt viscosity of PA12 relative to PA66. Melt temperature at the nozzle is held between 250°C and 270°C, mold temperature is set to 100°C to 120°C, and the gear tool is designed with a central submarine gate at the hub to orient glass fibers radially along the teeth; a three-plate or direct edge gate at the tooth tends to create weak knit lines at the root. After demolding, gears are annealed at 120°C for 2 h under nitrogen to increase crystallinity and stabilize internal stress, then conditioned at 23°C and 50% relative humidity for 48 h before dimensional inspection to DIN 3962/ISO 1328 quality class 9. Terminal finished product types include spur gears, helical gears, worm wheels, pump gears, and gear housings.
Where outdoor 5G small-cell enclosures and antenna mount brackets are converted from die-cast aluminium to a 65% glass-fiber-reinforced PA12, the mass reduction is achieved only if the selected grade and color package are validated for UV and damp-heat exposure; EMS-Grivory Grilamid LV-65H FWA nat is not carbon-black pigmented, so outdoor deployment in natural color requires a UV absorber/light stabilizer addition in the molding compound or an opaque coating. The governing compliance matrix for this downstream segment includes IEC 60529 ingress protection at IP65 or IP67, IEC 60068-2-30:2005 for damp heat cyclic testing, ISO 4892-2:2013 for xenon-arc UV weathering, and ISO 527-1/-2:2019 for mechanical strength after 1,000 h of exposure. Published data for the unpainted natural grade after prolonged UV exposure is limited; therefore, OEMs often specify pigmented variants or coatings before outdoor qualification. The formulation addition ratio is 65% glass fiber by weight as molded; if a light stabilizer masterbatch is compounded at the press, it should not exceed 2.0% by weight, and the carrier resin must be a PA12-compatible polyamide to avoid delamination at the glass-matrix interface. Production on a 250 t two-platen injection molding machine with a 40 mm diameter wear-protected screw uses barrel temperatures of 230°C to 260°C and mold temperatures of 80°C to 100°C; wall thicknesses are held between 2.8 mm and 4.0 mm to minimize differential shrinkage between glass-rich flow fronts. Gas-assisted injection or external gas-voiding is used for thick corner bosses to eliminate sink marks, and the tool is vented at the last filling point with 0.02 mm to 0.04 mm wide vent channels because the glass-filled melt releases volatile degradation products at high shear. Terminal finished product types include outdoor enclosure base frames, antenna mount brackets, cable entry glands, and remote radio unit mounting plates.
Compressed air valve manifolds and filter-regulator-lubricator housing bodies in automation lines require a controlled coefficient of linear thermal expansion and low moisture absorption to maintain port spacing over 24 h of continuous operation. EMS-Grivory Grilamid LV-65H FWA nat at its as-delivered 65% glass-fiber mass fraction is used without dilution; regrind of sprues and runners up to 20% by weight is common for non-pressure-bearing end caps, but the reclaimed fraction must be recrystallized and dried at 80°C for 4 h before re-introduction. Industry compliance standards for this application environment include ISO 5599-1:2001 for port pattern and valve mounting interface dimensions, ISO 15407-1:2000 for pneumatic valve mounting surfaces, ISO 8772:2006 for compressed air quality where relevant to the housing, and ISO 527-1/-2:2019 for mechanical properties after oil mist exposure. Production-scale molding is performed on a 100 t to 150 t electric injection molding machine with a 25:1 L/D screw and a hot runner manifold dedicated to glass-filled PA12; the barrel profile is set at 220°C, 230°C, 240°C, and 245°C from rear to nozzle, while the mold is held at 80°C to 90°C. The main processing bottleneck on multi-cavity manifold bodies is the formation of glass-rich weld lines where flow fronts meet around the valve spool bore; this is addressed by placing gate locations at the thickest wall behind the bore and by using a high injection speed of 100 mm/s to 180 mm/s with a hold pressure of 40 MPa to 55 MPa for 5 s to 8 s. After molding, the bodies are annealed at 100°C for 1 h and then conditioned at 23°C and 50% relative humidity for 24 h to 48 h before bore honing. Terminal finished product types include ISO 5599 valve manifold bases, filter bowl head housings, regulator bodies, and pneumatic cylinder end covers.
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EMS-Grivory Grilamid LV-65H FWA nat is a natural-colour, heat-stabilised polyamide 12 injection moulding compound reinforced with 65% glass fibre by mass. The grade designation encodes the material architecture: LV identifies the viscosity series, 65H denotes the nominal 65% glass-fibre content and heat stabilisation, FWA indicates a formulation intended for food-contact and drinking-water applications, and nat specifies the natural, unpigmented state. The term conditioned refers to the moisture-equilibrated condition obtained by accelerated conditioning per ISO 1110 or by storage at 23 °C and 50% relative humidity. In the conditioned condition, the PA12 matrix has absorbed a limited equilibrium moisture content, and mechanical values shift relative to the dry-as-moulded material. The compound is supplied as cylindrical granules and is processed by desiccant drying and conventional injection moulding on machines equipped for high-glass-fibre-reinforced grades. The natural colour provides a neutral base for subsequent colouring or for applications where carbon black is not permissible under food-contact or drinking-water requirements.
The primary performance distinction is the low moisture uptake of the PA12 matrix compared with PA66 and PA6. At water saturation by ISO 62, a glass-filled PA12 such as this grade is reported in the range of 0.6–0.8%, while glass-filled PA66 typically reaches 3–5% by mass depending on fibre loading and sizing. This difference controls the conditioned mechanical envelope: the tensile modulus of PA12 drops less from dry to conditioned state, and dimensions change less in humid service. A second distinction is chemical resistance, particularly resistance to zinc chloride and calcium chloride solutions; PA12 components are widely used in automotive fuel and cooling circuits where PA66 may fail by environmental stress cracking under salt-loaded exposure. The trade-off is thermal performance: the melting peak of PA12 by ISO 11357-1/-3 is approximately 175–180 °C, whereas PA66 melts near 260 °C. Consequently, heat deflection temperatures are lower, and continuous-use design limits in hot environments must be reduced accordingly.
The following representative values are drawn from EMS-GRIVORY technical documentation for this compound and are not specification limits. Lot certificates and the current material datasheet should govern design and quality control.
| Property | Test method | Dry-as-moulded | Conditioned |
|---|---|---|---|
| Density | ISO 1183-1 | 1.64 g/cm³ | 1.64 g/cm³ |
| Tensile modulus | ISO 527-1/-2 | 19,000 MPa | 15,000 MPa |
| Tensile strength at break | ISO 527-1/-2 | 180 MPa | 145 MPa |
| Elongation at break | ISO 527-1/-2 | 2.0% | 2.3% |
| Charpy notched impact strength, 23 °C | ISO 179/1eA | 15 kJ/m² | 16 kJ/m² |
| Water absorption, saturation in water, 23 °C | ISO 62 | 0.6–0.8% | — |
Heat deflection temperature at 1.8 MPa by ISO 75-1/-2 is reported in the range of 170–175 °C for dry-as-moulded specimens, which is lower than that of glass-filled PA66 grades by roughly 50–60 K. The conditioned value is commonly reported 10–15 K lower because moisture plasticises the amorphous fraction. Designers should therefore use dry-as-moulded values for dry environments and conditioned values for humid or water-contact environments.
Compared with an unreinforced PA12, the 65% glass-fibre addition raises tensile modulus from approximately 1,500 MPa to 19,000 MPa, a factor of more than 12, while elongation at break falls to 2.0–2.3%. Compared with a 30% glass-fibre PA12, the 65% grade offers higher stiffness and lower creep but has lower spiral flow and greater notch sensitivity; gate location and weld-line placement become critical.
Desiccant drying is required before moulding. The granules should be dried at 80 °C for 4–12 h in a closed-loop desiccant dryer with a dew point not higher than −30 °C. The target residual moisture is 0.1% or less, measurable by ISO 15512. Drying times below 4 h may be insufficient when warehouse relative humidity exceeds 60%; drying above 100 °C can oxidise the natural resin and should be avoided.
The injection unit must be specified for abrasive glass-reinforced materials. Production experience favours a bimetallic barrel, a hardened screw with a compression ratio between 1.5:1 and 2.0:1 and L/D ratio of 20:1–25:1, and a wear-resistant check ring. Melt temperature at the nozzle is normally controlled between 230 °C and 280 °C; lower values reduce fibre breakage but increase injection pressure, while upper values are reserved for thin walls below 1.5 mm. Residence time above 280 °C should not exceed a few minutes; purging with a low-viscosity PA12 or commercial purging compound is required for interruptions longer than 10–15 min.
Mould temperature influences crystallinity, surface appearance and weld-line strength. A mould temperature of 80–120 °C is typical; the higher end improves dimensional stability and weld-line integrity in pressure-bearing parts. On production lines with water-cooled moulds and no oil heating, the lower end may be used only if longer holding pressure is applied. Insert moulding and thick sections above 3 mm require active mould-temperature control to avoid sink marks and vacuum voids.
Because 65% glass fibre substantially raises viscosity, screw speed should be moderate, usually 50–120 rpm, with back pressure limited to 30–70 bar. High back pressure may increase melt temperature and break fibre length; low back pressure may reduce melt homogeneity. Injection speed should be profiled to prevent jetting and free glass accumulation at the flow front. The compound is manufactured by incorporating glass fibre downstream in a co-rotating twin-screw extruder; this is standard for 65% filled products and is intended to retain fibre length while wet-out is achieved. Batch-to-batch fibre length distribution can shift tensile modulus by ±5%; incoming mould shops often verify tensile modulus by ISO 527-1/-2 on dry-as-moulded test bars.
A water-pump housing injection-moulded from Grilamid LV-65H FWA nat is selected when the part must combine high stiffness, low moisture uptake, and resistance to treated water at temperatures up to about 80 °C. Typical uses include pump impellers, valve bodies, water-meter housings, heating-circuit manifolds, and fittings for potable-water distribution; the high glass loading permits replacement of brass and stainless steel in selected pressure-bearing geometries. End-product qualification is nevertheless required. A housing in a pressurised water circuit should be tested under end-use hydrostatic pressure and thermal cycling; long-term strength may be evaluated by ISO 9080 or the relevant plumbing-system standard for the region.
In automotive fluid handling, the same grade is used for structural brackets, sensor housings, and cooling-system components where road-salt exposure occurs. Resistance to zinc chloride stress cracking is a reason to choose PA12 over PA66 in such environments; screening may be performed by ISO 22088 or vehicle-specific chemical exposure tests such as ISO 16750-5. The unpigmented natural grade can be laser marked only after validation because the glass fibres scatter incident energy and the natural resin does not absorb laser wavelengths as strongly as carbon-black-containing grades.
The FWA suffix indicates the compound is formulated for possible food-contact and drinking-water use, but it does not automatically confer global certification. For the European Union, compliance with Regulation (EU) No 10/2011 and its overall migration limits must be demonstrated on the finished article. For the United States, PA12 falls within the nylon resin provisions of 21 CFR 177.1500, subject to end-use conditions and food type. Drinking-water approvals vary by market: NSF/ANSI 61 in North America, KTW/CoP in Germany, WRAS in the United Kingdom, ACS in France, and DVGW W270 for microbial growth resistance are representative programs. The material manufacturer maintains a current certification schedule for the specific colour and lot; a raw-material approval does not replace plumbing-system certification of the finished part.
Chemical resistance is matrix-dominated. The material generally withstands aliphatic hydrocarbons, diesel, lubricating oils, greases, and dilute salt solutions, with test programs under ISO 175 for immersion and ISO 22088 for environmental stress cracking. Strong mineral acids, phenols, concentrated formic acid, and oxidising agents degrade PA12 and should be excluded. In hot-water service above 80–90 °C, glass-fibre sizing may gradually hydrolyse, causing loss of interfacial adhesion even though the PA12 matrix itself is hydrolysis-resistant; long-term ageing tests are required.
The natural unpigmented position has a boundary in outdoor exposure: heat stabilisation does not provide UV weathering resistance. If outdoor or sustained UV exposure is required, the finished part should be evaluated under ISO 4892-2 with a specified radiant exposure, and surface chalking or gloss loss should be accepted as an expected failure mode unless a coated or coloured version is used.
For precision housings, the combination of high glass loading and low moisture uptake gives predictable dimensional change from dry to conditioned state. Linear expansion due to moisture by ISO 62 can be estimated from the moisture content and the coefficient of hygroscopic expansion; for glass-filled PA12, the coefficient is lower than for PA66. Mould shrinkage anisotropy remains a significant process variable: shrinkage in flow direction is typically lower than transverse shrinkage because highly oriented glass fibres constrain the polymer. Tooling design should use a shrinkage allowance derived from moulding trials at production wall thickness and evaluated by ISO 294-4, not from generic material data.
