| HS Code | 253043 |
| Material | EMS-Grivory Grilamid LBV-65H FWA nat Nylon 12, 65% Glass Fiber Filled, Conditioned |
| Glass Fiber Content | 65 % |
| Density | 1.61 g/cm³ |
| Water Absorption 24h | 0.3 % |
| Tensile Modulus | 12500 MPa |
| Tensile Strength | 135 MPa |
| Elongation At Break | 2.2 % |
| Flexural Modulus | 11000 MPa |
| Flexural Strength | 180 MPa |
| Charpy Notched Impact Strength 23 C | 6.5 kJ/m² |
| Charpy Unnotched Impact Strength 23 C | 40 kJ/m² |
| Melting Temperature Dsc | 178 °C |
| Heat Deflection Temperature 1 80 Mpa | 175 °C |
| Heat Deflection Temperature 0 45 Mpa | 195 °C |
As an accredited EMS-Grivory Grilamid LBV-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 25 kg sealed, moisture-proof bags, conditioned to preserve Nylon 12 performance and prevent moisture absorption. |
| Container Loading (20′ FCL) | 20′ FCL: palletized, conditioned Grilamid LBV-65H nylon 12 loaded in a 20-foot container, weight-optimized and secured for transport. |
| Shipping | Shipments of EMS-Grivory Grilamid LBV-65H FWA nat are packed in moisture-resistant, sealed containers to prevent humidity absorption. Standard ground freight is used; keep pallets dry, upright, and protected from impact. Avoid prolonged heat exposure during transit to preserve material integrity and conditioned properties. |
| Storage | Store Grilamid LBV-65H FWA nat in its original, sealed container in a cool, dry, and well-ventilated area. Keep away from direct sunlight, heat sources, and excessive humidity to prevent moisture absorption. Maintain temperatures below 30°C (86°F) and use within the manufacturer's recommended shelf life to ensure optimal performance. |
| Shelf Life | Store in original sealed packaging, cool and dry. Shelf life is typically 5 years from production date when unopened. |
In potable water meter chambers and circulation pump bodies, Grilamid LBV-65H FWA nat is processed as 100 wt% virgin feedstock in injection units segregated from non-food grades to avoid cross-contamination with unlisted regrind. The glass-fibre content of 65 wt% is confirmed by ISO 3451-1 ash testing, and the material is dried in desiccant dryers at 80°C to a residual moisture of 0.10% or below by ISO 15512 Karl Fischer titration, because hydrolysis of PA12 at melt temperature lowers molecular weight and produces surface splay on polished cavity surfaces. Batches received with moisture above 0.20% are dried for up to 12 h at 80°C; drying temperatures above 100°C are avoided because oxidative yellowing of PA12 becomes detectable. Clamp force is sized at 0.6–1.0 kN/cm² of projected area, and the screw should have a wear-resistant bimetallic barrel with L/D ratio 18:1–22:1 and a hard-chromed or nitrided check ring. Melt temperature is controlled at 240–270°C, mould temperature at 60–100°C, and gate placement is moved to thick wall sections away from sealing surfaces to prevent exposed glass-fibre ends that would form microchannels through elastomer seals. Hold pressure is maintained at 50–80 MPa until the gate freezes, and injection speed is set between 60–150 mm/s depending on flow length. Compliance review for EU and German potable water service uses Regulation (EU) No 10/2011 migration limits and the current UBA KTW-BWGL positive-list documentation; North American installations are assessed under NSF/ANSI/CAN 61 for materials in contact with drinking water. For potable-water contact, regrind addition is limited to 0–25 wt% and only from sprues and runners of the same approved grade; colouring masterbatch is excluded unless separately listed for drinking-water use. Terminal parts produced from this compound include water meter bodies, pump volutes, valve bodies, and adaptor flanges in which dimensional stability under humid service and resistance to chlorine dioxide disinfection residuals are required.
Fuel quick connectors and sender flanges moulded from LBV-65H FWA nat are specified where exposure to gasoline, diesel, and oxygenated fuel blends requires low dimensional change and high burst strength. The material is fed at 100 wt% virgin resin for safety-relevant fuel-system parts; regrind from the same production lot may be incorporated up to 20 wt% only if the OEM drawing and material specification explicitly allow recycled content. In multi-cavity tools, nozzle-to-nozzle temperature variation is kept within ±5°C because the 65% glass-fibre compound shows a steep viscosity increase below 250°C and the risk of thermal yellowing above 290°C. Pre-drying in a closed-loop desiccant dryer at 80°C for 4–8 h is required because residual moisture above 0.15% causes hydrolysis at the 250–280°C melt temperature. The mould temperature is held between 80–100°C to reduce glass-fibre orientation differences between the surface skin and the core. Screw surface speed is limited to 8–15 m/min to protect the barrel, screw, and check ring from abrasive wear, and gate freeze is monitored by shot-weight stability with a control limit of ±0.15%. Gate design uses a single valve-gated hot runner or a tab gate into the thickest wall section because weld lines formed around pin holes reduce tensile strength by 30–50% relative to the same geometry in unreinforced PA12 when tested by ASTM D638; published data for this specific 65% glass-fibre configuration is limited, so weld-line performance must be validated on a part-level basis. Burst-pressure and connect/disconnect testing follows SAE J2044, and the finished parts are marked according to ISO 11469 for polymer identification. Terminal parts include fuel-sender flanges, quick-connect retaining bodies, fuel-pump mounting flanges, and rollover-valve housings.
When compressed-air distribution manifolds are converted from 6061-T6 aluminium to injection-moulded polyamide 12 with 65 wt% glass fibre, dimensional stability at dew points below −20°C and the absence of internal corrosion products become the specifying criteria. The compound is processed at 100 wt% virgin resin for pressure-containing parts, with external lubricant masterbatch limited to 0–0.5 wt% and only after verification that the lubricant will not exude into the compressed-air stream. Incoming batches are released only after melt-viscosity screening and moisture verification because batch-to-batch differences in glass-fibre length distribution can shift fill pressure by 5–10%. Drying follows the same desiccant procedure to 0.08% moisture or below. Moulding uses high-wear-resistant screw tips, check rings, and bimetallic barrels because the 65% glass content accelerates abrasion of unprotected screw flights. Barrel temperatures are profiled from 230°C at the feed zone to 275°C at the nozzle, with mould temperature set at 80–120°C depending on wall-thickness distribution. For manifolds with thick bosses, gate-freeze time is verified by shot-weight monitoring; hold pressure of 60–90 MPa and a screw cushion of 3–6 mm are maintained to prevent sink marks at internal sealing faces. The assembled manifold is evaluated under ISO 4414 for pneumatic fluid power systems and ISO 8573-1 for compressed-air purity classes, while the polymer material itself is tested to ISO 527-2 for tensile modulus and strength after conditioning to ISO 291. Terminal parts include pneumatic valve islands, solenoid pilot housings, air-prep regulator bodies, and cylinder end covers.
Switchgear frames and busbar supports moulded from this compound take advantage of conditioned moisture equilibrium that stabilises electrical and mechanical properties. The recommended electrical-grade formulation is 100 wt% virgin Grilamid LBV-65H FWA nat or a blend with ≤5 wt% carbon-black masterbatch when black pigmentation or laser marking is required; the masterbatch carrier must be PA12 or an approved compatible polyamide to avoid phase separation. The conversion process uses pre-drying to 0.05–0.10% residual moisture, melt temperature 250–270°C, and mould temperature 60–90°C. Short-flow paths and generous radii reduce weld lines near busbar retention features; where a weld line cannot be avoided, a vent groove 0.02–0.05 mm deep at the weld location reduces gas entrapment. After demoulding, conditioning at 23°C and 50% RH to equilibrium moisture content of 0.4–0.6 wt% measured by ISO 15512 stabilises tensile modulus and creep behaviour; dimensional checks are made only after this conditioning step, because immediate post-mould measurement overstates stability. Assembly design follows IEC 60664-1 clearances and creepage distances, and ignition resistance is validated according to IEC 60695-2-11 at the final wall thickness. Terminal part types include contactor bases, busbar insulators, circuit-breaker frames, and terminal block housings for low-voltage switchgear.
Beverage filling and food processing machine components are produced from this grade in washdown environments where metal replacement demands high stiffness and low moisture uptake. The food-contact formulation uses 100 wt% natural-grade Grilamid LBV-65H FWA nat; no reprocessed material from non-food grades is permitted. Colouring is restricted to ≤2 wt% of a food-contact-listed masterbatch, and only if the finished part is tested under end-use migration conditions. The downstream production sequence includes pre-drying at 80°C for 4–6 h, injection moulding at 240–270°C melt temperature and 60–100°C mould temperature, and post-mould washing of cavity surfaces to remove PA12 condensate residues. Mould release agents are excluded from the conversion process; ejector pin lubrication is applied only to the mould side and wiped from the cavity before production resumes. Compliance is assessed to FDA 21 CFR 177.1500 for nylon resins in repeated food contact and Regulation (EU) No 10/2011 for plastic materials and articles intended to come into contact with food, with overall migration determined according to EN 1186. Terminal products include food conveyor guide rails, filling valve bodies, scraper blades, and star-wheel segments for bottling lines.
Along engine-coolant recirculation circuits, glass-filled PA12 housings and actuator gears are moulded to replace PPS or aluminium in mixed-metal contact environments where glycol-water coolant at 105–125°C and corrosion inhibitors attack POM or PBT. The material is processed at 100 wt% virgin resin, with regrind limited to 15 wt% for non-safety thermal-management parts; internal mould-release additives are avoided because they reduce laser-welding transmission and torque retention in threaded inserts. Pre-drying at 80°C for 4–8 h to 0.10% moisture is followed by injection moulding with melt temperature 250–280°C and mould temperature 80–120°C. Because 65% glass-fibre causes anisotropic shrinkage, the mould is designed with post-shrinkage allowances of 0.1–0.3% in the flow direction and 0.4–0.6% across flow, verified after 48 h. Automotive thermal-management qualification under coolant exposure is driven by OEM material specifications derived from ASTM D638 and coolant manufacturer corrosion-resistance standards; no single ISO standard covers glycol-water compatibility. Mechanical validation follows ISO 527-2 after conditioning to ISO 291 atmospheres; long-term coolant resistance is screened by sustained exposure in the customer's glycol-water formulation, and published data for this specific 65% glass-fibre configuration is limited, so part-level validation is required. Terminal parts include thermostat housings, coolant actuator gears, pump impeller shrouds, and fan shroud brackets.
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EMS-Grivory Grilamid LBV-65H FWA nat is a heat-stabilised, 65% glass-fibre-reinforced polyamide 12 compound supplied in natural colour and in a conditioned moisture state. The “conditioned” designation is a testing and documentation convention rather than a separate formulation: specimens are brought to equilibrium at 23°C and 50% relative humidity in accordance with ISO 291 or subjected to accelerated moisture uptake according to ISO 1110. Because the glass mass fraction is 65%, the polymer mass fraction is approximately 35%; total moisture absorption is therefore proportional to a reduced polyamide 12 content. The LBV code identifies the polyamide 12 base with glass-fibre reinforcement, the suffix 65 denotes nominal glass-fibre mass fraction, H indicates heat stabilisation, FWA designates a formulation intended for food-contact, drinking-water, and air-contact documentation, and nat denotes natural colour.
The polyamide 12 matrix absorbs less water than polyamide 6 or polyamide 66. In unreinforced form, polyamide 12 commonly reaches equilibrium water absorption of about 1.4% to 1.5% at 23°C in water, whereas polyamide 66 can exceed 7% and polyamide 6 can exceed 9%. In a 65% glass-filled compound the difference remains significant. The low moisture uptake reduces swelling-induced dimensional change in humid assemblies, so the grade is evaluated for water-meter bodies, pump components, valve housings, and compressed-air components where moisture-driven property drift is not acceptable. When tested to ISO 1183, the density of this compound falls within the range of 1.67 to 1.69 g/cm³.
Drying before melt processing is required. Residual moisture content should be below 0.1% to avoid hydrolytic degradation of the polyamide 12 matrix. A desiccant dryer operating at 80°C for 4 to 8 hours is the standard recommendation; longer residence in natural colour can lead to discolouration. The crystalline melting temperature of polyamide 12 is near 178°C when measured by differential scanning calorimetry to ISO 11357-3, but the practical melt-processing window is substantially higher because of the high fibre content.
Injection moulding should be performed at melt temperatures between 250°C and 290°C, with a preferred upper limit of 280°C when total residence time exceeds 10 minutes. Mould temperatures from 80°C to 120°C are required to obtain sufficient crystallisation, surface definition, and dimensional stability. At 65% glass loading, low mould temperatures produce high internal stress and brittle gate regions. Injection speed is normally moderate to high, and hold pressure must be adjusted to pack the cavity without creating excessive fibre orientation gradients.
The high glass content increases melt viscosity and narrows the processing window compared with 30% or 50% glass-filled polyamide 12. Because glass fibres are abrasive, cylinders and screws should use hardened steels and bimetallic barrels; screw L/D ratios of 18:1 to 22:1 are common on production lines. The main cycle-time constraint is usually gate freeze time rather than part cooling time, because the high glass content raises thermal conductivity and reduces specific heat. Mould shrinkage is anisotropic. Flow-direction shrinkage is typically in the range of 0.05% to 0.15%, while transverse shrinkage can reach 0.35% to 0.55%; tooling should therefore be designed using pressure-dependent shrinkage data from ISO 294-4 rather than unfilled polyamide 12 coefficients.
Fibre orientation gradients produce warpage in flat parts. Gate location, wall thickness transitions, and weld-line positions determine the dominant orientation field. Weld lines in 65% glass-filled polyamide 12 can reduce local strength by as much as 40% relative to the surrounding oriented fibre field. For pressure-containing components, weld-line placement should be moved away from membrane zones or verified by burst testing.
Because the grade is evaluated in both dry-as-moulded and conditioned states, design calculations should not use a single modulus value. Typical tensile modulus values for this class of 65% glass-filled polyamide 12 fall between 19,000 and 21,000 MPa when tested dry at 1 mm/min according to ISO 527-1/-2. Conditioned values are approximately 10% to 15% lower. Tensile strength at break in the dry state commonly lies between 190 and 220 MPa, and elongation at break is typically 2% to 3%. The compound therefore fails by brittle fibre-dominated fracture at room temperature.
Unnotched Charpy impact values under ISO 179-1/1eU are relatively high because fibre pull-out absorbs energy, but notched Charpy values under ISO 179-1/1eA remain modest. Heat deflection temperature under 1.8 MPa load is in the range of 170°C to 180°C when tested to ISO 75-1/-2. This is higher than unreinforced polyamide 12 but below high-temperature PPA grades. The coefficient of linear thermal expansion is anisotropic: flow-direction values near 2×10⁻⁵ K⁻¹ and transverse values near 7×10⁻⁵ K⁻¹ are common.
In humid end-use settings, the conditioned state is the more realistic reference. The polyamide 12 matrix exhibits low hydrolysis and stress-cracking tendency relative to polyamide 66, but continuous exposure to hot water above 80°C combined with high tensile stress can still produce oxidative degradation and loss of impact strength. Pressure boundaries and wall thicknesses should therefore be calculated using conditioned notched impact data and creep data at the specific fluid temperature.
Where potable-water or food-contact certification is required, the FWA designation is relevant but does not by itself constitute approval. The documentation package for this grade should be requested from the manufacturer because specific national approvals vary. The polyamide 12 base may be covered by general polyamide provisions such as FDA 21 CFR 177.1500 and European positive-list materials under Regulation (EU) No 10/2011; however glass fibre content and heat-stabiliser systems must be confirmed for the specific grade and migration testing conditions. Compliance with drinking-water standards such as NSF/ANSI 61, KTW-BWGL, or equivalent regional lists is not automatic and depends on the certification status of the exact formulation and colour.
The natural colour version is preferable for unpigmented water-contact components because it avoids colourant-related compliance variability. Dark-pigmented variants may introduce different laser-marking or ultraviolet exposure characteristics. In water-contact applications, the low moisture absorption of polyamide 12 reduces both property drift and dimensional change, but glass-fibre orientation and processing history still affect the final part. Certification tests should be performed on finished articles, not raw granulate, because melt-processing history changes the crystallinity, fibre orientation, and surface condition.
The most pronounced difference versus polyamide 66 filled with 60% glass is moisture uptake. The polyamide 12 matrix lowers saturation water absorption by roughly 60% to 70% relative to polyamide 66, reducing mechanical property drift and dimensional swelling in humid conditions. However polyamide 12 filled with 65% glass has a lower continuous use temperature than high-performance PPA grades and lower dry-state strength than some PPA compounds. Direct substitution into an existing polyamide 66-GF60 mould should be confirmed with new shrinkage data, because the polyamide 12 grade can exhibit narrower packing windows and different gate freeze times.
Within the Grilamid LBV family, increasing glass content from 30% to 50% to 65% increases modulus, creep resistance, and heat deflection temperature but reduces melt flow, elongation, and notched impact strength. The 65H grade should therefore be selected when part stiffness and dimensional stability dominate, not when the part must absorb impact or accommodate snap-fit assembly. The low elongation of the 65% grade makes overtightening of threaded connections a failure risk; torque levels should be reduced relative to unreinforced polyamide 12 or polyamide 6, and metal inserts should be used where creep relaxation cannot be tolerated.
The polyamide 12 matrix provides resistance to aliphatic hydrocarbons, diesel, lubricating oils, greases, and many glycol-based coolants. Strong acids, phenolic compounds, and strong oxidising agents attack polyamide 12. At 65% glass content the glass-matrix interface becomes a diffusion path, so the chemical resistance of the compound can be lower than unreinforced polyamide 12 in strongly acidic media. This limitation should be considered before replacing metal in fuel-system or chemical-metering parts.
In metering and fluid-handling equipment, EMS-Grivory Grilamid LBV-65H FWA nat is evaluated for pump impellers, valve bodies, water-meter chambers, filter housings, and flow-control components. The high glass content supports tight impeller tip clearances because creep under load is lower than unreinforced polyamide 12. The low moisture uptake supports dimensional stability in cold and warm potable water. For pump impellers, published data for this specific configuration is limited with respect to cavitation erosion and high-speed fatigue; prototype testing under ISO 5199 or equivalent hydraulic test conditions is required before final design release.
Where the part operates in air-handling or compressed-air systems, the FWA designation may also be relevant for air-contact approvals. Glass-fibre orientation near weld lines reduces local mechanical strength, and weld-line placement in valve bodies and housings should be moved away from pressure-retaining sections or verified using burst testing. For gears, cams, and structural housings, the high modulus and low elongation provide low deflection under load, but the notched impact limitation requires careful radius design and avoidance of sharp corners.
