| HS Code | 803199 |
| Density | 1.59 g/cm³ |
| Water Absorption 50 Rh | 0.5 % |
| Melting Point | 178 °C |
| Tensile Modulus | 12000 MPa |
| Tensile Strength At Break | 145 MPa |
| Tensile Elongation At Break | 2.5 % |
| Flexural Modulus | 10500 MPa |
| Flexural Strength | 210 MPa |
| Charpy Impact Strength Notched | 25 kJ/m² |
| Charpy Impact Strength Unnotched | 120 kJ/m² |
| Izod Impact Strength Notched | 20 kJ/m² |
| Heat Deflection Temperature 1 8 Mpa | 170 °C |
As an accredited EMS-Grivory Grilamid LBV-65H FWA black 9225 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 | Packaged as conditioned nylon 12 pellets in moisture-proof sealed bags, 25 kg per bag, ready for dry handling. |
| Container Loading (20′ FCL) | 20′ FCL shipment of Grilamid LBV-65H FWA black 9225 nylon 12 granules, 65% glass fiber, conditioned, on pallets, shrink-wrapped. |
| Shipping | Shipped in sealed, moisture-resistant packaging to preserve conditioned properties. Store in a cool, dry area away from direct heat and humidity. Handle with standard industrial care; protect bags from punctures. No special hazardous shipping required for this nylon 12 compound. |
| Storage | Store in a cool, dry, well-ventilated area away from direct sunlight, heat, and moisture. Keep the original sealed container closed to prevent humidity absorption, as nylon 12 can pick up moisture. Store at room temperature (ideally below 30°C) and reseal tightly after use. Use within a reasonable shelf life of six months. |
| Shelf Life | Store unopened in original packaging in a cool, dry place; shelf life is typically two years from production date. |
In potable water pumping circuits where cold-water impellers and pressure-tank flanges are injection-moulded from a single thermoplastic compound, Grilamid LBV-65H FWA black 9225 is processed at a melt-temperature envelope of 250–280°C and tool-surface temperature of 80–120°C to reduce fibre-orientation gradients that would otherwise produce out-of-round impeller hubs after conditioning at 23°C/50% relative humidity. The formulation addition ratio is fixed as supplied: 65 wt% glass fibre embedded in a 35 wt% PA12 matrix, with no post-additive compounding step at the injection press. This fibre loading raises conditioned tensile modulus into the 16,000–18,000 MPa range when tested per ISO 527-1 and reduces linear mould shrinkage to 0.1–0.3% in flow and 0.4–0.6% across flow per ISO 294-4. Industry compliance standards for the potable-water segment are anchored to KTW-BWGL, DVGW W270, WRAS BS 6920-1, NSF/ANSI 61 Section 4, ACS, and AS/NZS 4020; because the black pigment grade is supplied with food/water approval, sensory impact is checked under EN 1622 for odour and EN 1420-1 for flavour in downstream certification campaigns. Injection moulding lines producing submersible pump impellers, booster pump diffusers, pressure-tank anchor flanges, and impeller-centring bushings use screw L/D of 20:1–25:1, hydraulic back pressure of 3–5 MPa, and sequential valve gating to move glass-fibre weld lines away from the hub-to-blade junction. Observed production-scale failure is not hydrolytic degradation but micro-cracking at weld lines when cavity filling speed drops below 200 mm/s or when tool temperature falls below 100°C; pre-drying is nevertheless mandatory at 80°C for 4–8 h to residual moisture below 0.10% per ISO 15512. When ambient storage exceeds 60% RH, drying time may extend to 12 h because PA12 approaches equilibrium moisture slowly. The terminal component set includes potable-water circulation pump impellers, stainless-steel overmoulded pressure-tank lower shells, pressure-booster diffusers, and water-lubricated bearing carriers. Regrind from rejected impellers may be reintroduced at a maximum ratio of 20 wt% with virgin conditioned pellets; above this threshold fibre attrition lowers Charpy unnotched impact tested per ISO 179-1 and increases lot-to-lot variance in moulded hub roundness.
Thermostatic mixing valve cartridges in building services operate with hot-side stagnant water at 60–80°C and cold-side potable water at 5–15°C; the differential thermal expansion across a cartridge seat moulded from 65 wt% glass-reinforced PA12 remains below 0.1% linear at 80°C when measured under ISO 11359-2, which is why the material is used for internal distribution chambers rather than exposed chrome-plated shells. The as-supplied formulation ratio is 65:35 glass fibre to PA12 by weight; secondary compounding of additional chopped glass at the moulder is not recommended because fibre-length reduction lowers notched impact resistance and shifts the melt viscosity into a range where hot-runner pressure exceeds 160 MPa. Compliance documentation for sanitary fittings references KTW-BWGL, DVGW W270, WRAS BS 6920-1, ACS, NSF/ANSI 61 Section 4, EC 1935/2004, and FDA 21 CFR 177.1500 for nylon resin food-contact articles; the black 9225 colour is acceptable only where carbon black is included in the approved formulation, and it is not suitable for translucent hot-water manifolds. Moulders use electric injection units with screw L/D of 20:1–25:1, nozzle temperature 260–275°C, and tool temperature 100–110°C; cavity pressure sensors are set to switch from filling to holding at 40–60 MPa to prevent jetting at the gate and to maintain weld-line strength in the cartridge retaining ring. Terminal finished product types include thermostatic mixing valve cartridges, anti-scald shower diverter housings, point-of-use water-heater mixing tees, and boiler fill-valve bodies. The operational boundary is a barrel residence time at 280°C below 5 minutes; beyond this, brownish surface streaks appear from thermal oxidation, even though PA12 is less hygroscopic and oxidation-prone than PA6. Post-consumer recycled PA12 of unknown copper-iodide stabiliser content should not be blended into this FWA grade because migration of proprietary heat-stabiliser packages may invalidate drinking-water approvals under KTW-BWGL and NSF/ANSI 61.
Where an electric coolant pump impeller or thermostat housing is moulded for long-term exposure to 50:50 ethylene glycol–water at 110–135°C, the combination of 65 wt% glass-fibre reinforcement and the low saturated water uptake of PA12 becomes functionally relevant because tensile modulus retention after 1,000 h immersion per ISO 175 remains within the lot-to-lot variation of dry-as-moulded values. The material is classified under ASTM D6779 as a PA12 moulding/extrusion compound and designated under ISO 16396-1 for glass-reinforced PA12; OEM thermal cycling and coolant ageing protocols are run under ISO 175 and ASTM D638. For EU supply, the compound is accompanied by REACH SVHC declarations under EC 1907/2006 and RoHS 2011/65/EU documentation. The formulation addition ratio is not adjustable on the production floor: 65 wt% glass fibre and 35 wt% PA12 matrix are supplied as a single lot-stable compound, and regrind for structural coolant housings is limited to 15 wt% because Charpy impact at -40°C per ISO 179-1 is sensitive to fibre-length degradation. Injection moulding of coolant control valve bodies and electric water pump rotors uses tool temperature of 120–130°C to promote crystallinity, holding pressure of 60–80 MPa, and melt cushion of 2–4 mm to avoid fibre segregation at the flow front. Published multi-year creep data for 65% glass-filled PA12 in 50:50 glycol at 135°C is limited; accelerated testing is typically extrapolated from ISO 899-1 tensile creep. Moulded end-use parts include electric coolant pump impellers, thermostat housings, coolant distribution flanges, and powertrain thermal-management valve bodies. The process window is narrow at the upper end: melt temperature must not exceed 280°C for more than 5 minutes, and hot-oil mould-temperature units must maintain setpoint within ±3°C, otherwise warpage of the impeller hub exceeds the 0.03 mm runout limit required for high-speed rotor balancing.
Compressed-air valve bodies and manifold blocks moulded from 65 wt% glass-reinforced PA12 are tested for dimensional interchangeability under ISO 6150 and for system-level safety under ISO 4414; the material reduces mass relative to die-cast aluminium while retaining burst-pressure margin at 10–16 bar operating pressure. The formulation addition ratio is the as-supplied 65:35 glass-to-PA12 ratio; no secondary glass-fibre dilution is used because fibre-length retention is critical for burst strength, and regrind is capped at 15 wt% to prevent cold-slug formation in pneumatic quick-coupling threaded zones. Moulders use balanced twin cavities with direct edge gates opposite the thread ring, screw L/D 20:1–25:1, decompression of 2–3 mm after plasticising to avoid drool at the nozzle, and barrel temperature profile from 230°C at the hopper to 270°C at the nozzle. The downstream production process for directional valve bodies frequently includes ultrasonic welding of the spool sleeve or overmoulding of stainless-steel thread inserts; glass-fibre orientation around the insert must be controlled by holding pressure of 50–70 MPa because insert-side voids appear below 40 MPa. Final assembled articles include 5/2 and 3/2 pneumatic directional valve bodies, manifold blocks, cylinder end caps, push-to-connect fittings, and compressed-air quick couplings. Specific long-term fatigue data for 65% GF PA12 in compressed air at 10 bar and 40°C is limited; accelerated validation is therefore performed under ISO 8573-1 air-purity classes 2:2:1 because oil-aerosol contamination shifts spool clearance if not controlled. Do not use regrind from unknown sources that may contain impact modifiers or external release agents; these migrate to the spool bore surface and change sliding friction in a manner not covered by the FWA approval documentation.
Residential water meter housings and ultrasonic flow tubes are injection-moulded from 65 wt% glass-filled PA12 because the dimensional stability after moisture conditioning at 23°C/50% RH reduces metering insert shift relative to unfilled PA12; compliance is evaluated against OIML R49-1, ISO 4064-1, KTW-BWGL, DVGW W270, NSF/ANSI 61 Section 4, and ACS. The formulation addition ratio is fixed at 65 wt% glass fibre and 35 wt% PA12 matrix; meter-body moulders add no further reinforcement and keep post-industrial regrind below 15 wt% to avoid local reduction of burst strength at the brass-insert interface. The downstream production process uses insert overmoulding of preheated metallic thread inserts at 100–120°C, tool temperature of 110–125°C, and holding pressure of 60–80 MPa; preheating prevents micro-gaps at the insert-polymer boundary that open under 16 bar pressure cycling per ISO 4064-1. Metering system components manufactured from the grade include residential cold-water meter bodies, ultrasonic flow-meter measuring tubes, turbine insert carriers, and register housings. A critical process constraint is mould-surface wall thickness: below 2.5 mm, the 65% glass fibre fraction can produce fibre-rich surfaces and reduce pressure integrity; above 6 mm, sink marks at the insert bosses require gas-counterpressure or foam injection. The material is not recommended for hot-water meter bodies above 50°C continuous without an additional hydrolysis stabiliser package; published data for this specific configuration above 50°C is limited.
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EMS-Grivory Grilamid LBV-65H FWA black 9225 is a heat-stabilized polyamide 12 injection-molding compound reinforced with 65% glass fiber by weight and characterized in the conditioned state. The 9225 suffix defines the black color match, while the FWA designation places the grade within a formulation series positioned for food-contact and drinking-water applications, subject to final-article certification. Unlike PA6 and PA66 compounds with comparable glass loadings, the PA12 matrix imparts lower moisture uptake, lower density, and better dimensional stability in humid service. The high fiber fraction places the material in the upper stiffness range of the Grilamid portfolio and changes both processing behavior and failure mode relative to unfilled or lightly reinforced PA12.
The term “conditioned” refers to the moisture-equilibrated state prescribed for mechanical-property reporting under ISO 1110 or ISO 291 at 23°C / 50% RH, not to pellets that have been pre-humidified before molding. At 65 wt% glass content, the organic matrix fraction is only approximately one-third of the compound mass, so the reinforcement structure governs modulus, shrinkage, and crack-path behavior. Mold shrinkage in the flow direction is commonly within 0.10–0.30% under ISO 294-4, while transverse shrinkage may be two to three times higher because of fiber orientation. This anisotropy must be accounted for in gate location, warpage simulation, and tolerancing.
Moisture acts as a plasticizer in the polyamide matrix by reducing interchain hydrogen bonding. Because the matrix represents only about one-third of the compound mass, the absolute moisture uptake at equilibrium is low; the composite commonly reaches about 0.4% by weight at 23°C / 50% RH. This is sufficient to lower tensile modulus by 8–15% relative to dry-as-molded specimens and to increase elongation at break by approximately 0.5–1.0 percentage point. For parts that operate in humid air or water, conditioned values should be used in design calculations; dry values are relevant for short-term tests on freshly molded specimens.
Tensile properties are evaluated under ISO 527-1/2 on type 1A specimens, with modulus determined at 1 mm/min and strength at 5 mm/min. Charpy impact is measured under ISO 179-1/1eA for notched specimens and ISO 179-1/1eU for unnotched specimens. Heat deflection temperature is determined under ISO 75-1/2 at 1.8 MPa, and melting point is determined by ISO 11357-3. The values in Table 1 are representative of high-glass-fiber PA12 compounds in this class; the current black 9225 datasheet should be consulted for design-critical applications.
| Property | Dry | Conditioned 23°C / 50% RH | Standard |
|---|---|---|---|
| Density | 1.64 g/cm³ | — | ISO 1183-1 |
| Tensile modulus | 19,500 MPa | 17,000 MPa | ISO 527-1/2 |
| Tensile stress at break | 250 MPa | 210 MPa | ISO 527-1/2 |
| Elongation at break | 2.5% | 3.5% | ISO 527-1/2 |
| Charpy notched impact, 23°C | 25 kJ/m² | 30 kJ/m² | ISO 179-1/1eA |
| Charpy unnotched impact, 23°C | 85 kJ/m² | 90 kJ/m² | ISO 179-1/1eU |
| Heat deflection temperature, 1.8 MPa | 180°C | — | ISO 75-1/2 |
| Melting point | 178°C | — | ISO 11357-3 |
| Water absorption, equilibrium at 23°C / 50% RH | — | 0.4% | ISO 62 |
The high filler loading narrows the processing window. Cylinder set temperatures are typically 240–270°C from feed throat to nozzle, with melt temperature held below 270°C for normal cycle times. At these temperatures, PA12 is well above its 178°C melting point, but cumulative residence time above 260°C should be kept below 8–10 min to avoid yellowing and molar-mass reduction. Glass fiber is abrasive; barrel and screw flights are specified with bimetallic hardened surfaces, and the check ring should be hardened or replaceable. Screw back pressure between 0.3–0.7 MPa hydraulic and screw surface speed below 0.3 m/s reduce fiber breakage. Excessive back pressure or restrictive non-return valves cause fiber-length attrition, which lowers tensile modulus and impact strength even when the molded part appears fully filled.
Mold temperature set point is recommended at 80–120°C. At mold temperatures below 80°C, the skin freezes before the core, producing differential crystallinity, higher residual stress, and increased out-of-plane warpage. At 120°C, the surface remains above the PA12 glass transition long enough for relaxation of flow-induced fiber orientation, improving dimensional stability but lengthening cycle time. Holding pressure is normally between 60 and 100 MPa hydraulic, adjusted to gate seal. Gate thickness should be at least 0.7 times the nominal wall thickness, with land length ≤ 1 mm. Edge gates and direct sprue gates preserve fiber length; pinpoint gates, tunnel gates, and hot-runner tips with small orifices generate high shear and local fiber destruction. Gate freeze-off for 1.5–3.0 mm thick glass-filled PA12 sections is usually reached in 2–5 s at a mold temperature of 100°C; if transfer to holding pressure occurs after freeze-off, sink and voids cannot be corrected.
On production lines, batch-to-batch viscosity shifts of a few percent can occur from glass sizing and color concentrate; transfer from injection to holding should therefore be triggered by screw position or cavity pressure rather than timer alone. Melt-pressure fluctuations greater than 5–10% during plastication indicate non-uniform feed or worn screw surfaces. Gas marks from moisture require verification of dryer performance; failure to achieve residual moisture below 0.10% before molding produces silver streaks, reduced weld-line strength, and lower molecular weight at the nozzle. Predrying at 80°C for 4–8 h in a desiccant dryer to a dew point below -30°C is the standard preparation for this compound.
Comparative selection against other polyamides follows from the balance between moisture absorption and mechanical load capacity. Unfilled PA12 has a dry tensile modulus below 1,600 MPa and high elongation; the 65 wt% glass-reinforced compound raises stiffness by more than an order of magnitude while reducing strain at break to the 2.5–3.5% range. Relative to 30–50 wt% glass-reinforced PA12, this grade provides higher tensile and flexural modulus, lower creep, and lower mold shrinkage, but lower impact toughness and more pronounced anisotropy. Compared with a 60 wt% glass-filled PA66, the PA12 matrix absorbs about one-fifth as much moisture at 23°C / 50% RH, so conditioned tensile-property retention is better and warpage in large flat parts is lower. The trade-off is lower dry stiffness and lower short-term thermal resistance. Compared with high-glass PPA or PPS compounds, the material has lower continuous-use temperature and lower specific strength at elevated temperature, but better impact resistance and better resistance to many oils, fuels, and metal-salt solutions. These differences make the compound a candidate for water-handling valves, pump housings, and structural brackets that require high stiffness without the moisture sensitivity of PA66.
Regulatory conformity is article-specific and must be verified for the final part. The FWA suffix is associated with EMS-Grivory compounds evaluated against food-contact and drinking-water schemes; the black 9225 color masterbatch must also be covered. In the United States, PA12 is listed under FDA 21 CFR 177.1500 for nylon resins intended for food-contact use, subject to end-use extractives testing and use-temperature limitations. In the European Union, plastics for food contact must comply with EU 10/2011, including overall migration limits of 10 mg/dm². For drinking-water components, NSF/ANSI/CAN 61 or German KTW-BWGL certification is normally required; the manufacturer should confirm that the specific black 9225 variant carries a current certificate. RoHS compliance is expected under 2011/65/EU, and REACH Article 33 obligations apply under 1907/2006.
| Standard / Regulation | Relevant Scope | Typical Condition |
|---|---|---|
| FDA 21 CFR 177.1500 | Nylon resins for food contact | End-use extraction testing required |
| EU 10/2011 | Plastics in food-contact materials | Overall migration limit 10 mg/dm² |
| NSF/ANSI/CAN 61 | Drinking-water system components | Grade-specific listing required |
| KTW-BWGL | German drinking-water plastics | Positive list and test report |
| RoHS 2011/65/EU | Hazardous substances | Pb, Hg, Cd, Cr VI, PBB, PBDE limits |
| REACH EC 1907/2006 | SVHC communication | Article 33 obligations |
In potable-water service, the low equilibrium moisture uptake of PA12 reduces swelling, so dimensional expansion is smaller than with PA6 or PA66. For this compound, linear expansion from dry to water-saturated state is typically 0.10–0.30%, although the value depends on fiber orientation and section thickness. Long-term exposure to hot water above 60°C accelerates hydrolysis and oxidation; above 80°C, tensile-strength retention should be validated for the intended service life. Free chlorine in potable water above 0.5 mg/L can promote environmental stress cracking in stressed PA12 components over extended exposure, and published data for this specific glass-filled grade in chloraminated networks is limited.
Typical use cases for Grilamid LBV-65H FWA black 9225 are structural water-meter bodies, pump impellers, valve plates, fuel-system flanges, and appliance chassis components that require high stiffness and reduced moisture sensitivity. In these applications, the material is selected when PA6 or PA66 grades drift dimensionally after moisture saturation or when the part must survive repeated exposure to hot water, oils, or road de-icing salts. Molding trials on production equipment should include short-shot stages to map flow-front orientation, because the high glass content produces weld lines and glass-rich surfaces that cannot be eliminated by mold temperature alone. If out-of-plane impact is required, the gate location should position the weld line outside the load path, and a textured cavity surface may be required to control glass visibility at the surface. Post-molding regrind addition is generally limited to 20–30% to avoid cumulative fiber-length reduction and viscosity shift.
