| HS Code | 545938 |
| Density | 1.55 g/cm³ |
| Melting Point | 220 °C |
| Heat Deflection Temperature 1 8 Mpa | 180 °C |
| Tensile Modulus | 15000 MPa |
| Tensile Strength | 230 MPa |
| Elongation At Break | 2.5 % |
| Flexural Modulus | 14000 MPa |
| Flexural Strength | 280 MPa |
| Charpy Impact Notched | 10 kJ/m² |
| Charpy Impact Unnotched | 50 kJ/m² |
| Water Absorption 24h | 0.1 % |
| Volume Resistivity | 1e15 ohm·cm |
As an accredited EMS-Grivory Grilamid LBV-50H FWA black 9225 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 | Packaged in 25 kg sealed moisture-barrier polyethylene bags, palletized and wrapped, ensuring dry nylon 12 pellets remain contamination-free. |
| Container Loading (20′ FCL) | 20′ FCL loading: palletized 25 kg dry bags of Grilamid LBV-50H, secured, moisture-protected, for safe transport. |
| Shipping | Ship Grilamid LBV-50H as a moisture-sensitive nylon resin in sealed, dry packaging or desiccant-lined containers. Keep pallets wrapped and protected from punctures, dust, and humidity. No hazardous cargo classification is typically required; use standard freight, avoid prolonged heat exposure, and ensure dry storage prior to processing. |
| Storage | Store Grilamid LBV-50H FWA black 9225 in its original, tightly sealed container in a cool, dry, well-ventilated area. Keep away from direct sunlight, heat sources, and moisture. Avoid prolonged exposure to humidity, as nylon absorbs water. Ensure area is clean and free from chemicals. Proper storage maintains dryness and material performance. |
| Shelf Life | Shelf life is indefinite when stored dry in original unopened packaging; keep sealed to prevent moisture absorption. |
The selection of EMS-Grivory Grilamid LBV-50H FWA black 9225 for cold-water impeller housings, water-meter bodies, and valve covers proceeds from the PA12 backbone rather than from the 50% glass reinforcement alone. In direct injection molding the compound is charged at 100 wt% virgin granulate from moisture-barrier packaging verified to ≤0.10% residual moisture by ISO 15512. If in-house regrind from gated tools is incorporated, the formulation ceiling is 25 wt% sorted sprues/runners, passed through a hopper magnet and a 1.0 mm screen pack, and pre-dried together with virgin material. Compliance for finished components in contact with drinking water is jurisdiction-dependent and is not granted by the FWA raw-material designation alone; certification testing must be executed on the final molded article against NSF/ANSI/CAN 61 Section 8 mechanical devices, BS 6920-1:2014 for odor and taste, or KTW-BWGL under the German UBA scheme. Downstream production uses injection molding machines with three-zone general-purpose screws, L/D 20:1–24:1, compression ratio 2.0:1–2.3:1, and bimetallic barrels and check rings specified for short-glass abrasion. Desiccant drying at 80 °C for 4–8 h to a dew point of ≤−30 °C is required whenever moisture exceeds 0.10%. Melt temperature is held at 240–260 °C, mold temperature at 60–80 °C, and backpressure at 3–6 MPa; screw speed is limited to 0.2–0.5 m/s peripheral velocity to reduce glass-fiber attrition. Tool venting depth is set at 0.02–0.03 mm, and valve-gated hot runners are preferred to preserve knit-line strength in bosses. Gate-area glass clustering and premature check-ring wear are the two most common production failure modes observed on 50% glass-fiber PA12 lines. Terminal output comprises water meter piston housings, turbine impeller inserts, valve bodies for cold-water service, pump wear rings, and cover plates with integrally molded threads. Published long-term hydrostatic strength data for this exact compound in chlorinated potable water above 80 °C are limited; pressure-bearing parts should therefore be qualified by the molder under the applicable NSF/ANSI/CAN 61 protocol.
In dry and washdown food-processing environments, transfer stars, curved conveyor guide rails, and snap-on wear strips are molded from 100 wt% EMS-Grivory Grilamid LBV-50H FWA black 9225 with no reactive additives. The formulation addition ratio is thus a direct shot of predried compound; if regrind from sprues is reused, it is limited to 20 wt% of virgin weight and subjected to optical sorting for black specks. Regulatory evaluation follows FDA 21 CFR 177.1500 for nylon 12 articles intended for repeated food-contact use, with final extractives compliance dependent on food type and Conditions of Use A through H; for European Union markets, specific and overall migration are tested under EU Regulation 10/2011 with the assigned food simulants for aqueous, acidic, and low-alcohol products. The raw-material designation is not a certification; it provides a formulation suitable for final-article migration testing. Downstream production for wear-intensive components prioritizes end-gated injection molds with flash-free vents of 0.015–0.02 mm depth to reduce gas burn at high glass loading. Melt temperature is maintained at 250–270 °C, mold temperature at 80–90 °C, and injection speed is kept in the middle band to avoid jetting. Pre-drying follows a desiccant drying cycle at 80 °C for 6–12 h to a moisture content of ≤0.08%. Tool wear at the parting line and sprue bushing occurs faster than with unfilled PA12; hardened tool steel conforming to DIN 1.2344 is specified for series production. The terminal component set includes product transfer stars, neck-guide wear strips, timing screws, scraper mounting blocks, and machine guard profiles, all produced as replacement parts for bottling and bakery lines. Continuous exposure to >50% sulfuric acid or to phenolic cleaning agents at 60 °C is not recommended because stress-crazing can occur at knit lines.
For heavy-truck pneumatic valve blocks, the substitution of die-cast zinc with EMS-Grivory Grilamid LBV-50H FWA black 9225 addresses corrosion in road-deicing environments while maintaining creep resistance at under-hood temperature excursions to 90 °C. The material is fed at 100 wt% dry compound; glass content is verified at 50% by ISO 3451-1, and blending with in-house runners is capped at 30 wt% because weld-line strength falls as fiber length degrades. Industry compliance is managed through customer-specific OEM standards rather than a single harmonized material standard; candidate test references include ISO 7628-1:2019 for pneumatic brake circuit components and ISO 16750-4:2023 thermal shock testing for under-hood electronic and pneumatic modules. The black 9225 carbon-black pigmentation provides ultraviolet stabilization, but exterior components exposed above the hood line must pass SAE J2527 accelerated weathering. Downstream processing uses injection molding machines with cavity pressure in the range 80–120 MPa and direct hot-runner valve gating. Pre-drying at 80 °C for 4–8 h to ≤0.10% moisture is mandatory; residual moisture above 0.10% produces surface silver streaks and weld-line fracture. Melt temperature is 250–270 °C and mold temperature 70–90 °C to balance crystallization and dimensional accuracy. Core pins and threads are designed with 1°–2° draft, and tool steel with nitrided surfaces is used because glass-fiber-filled PA12 causes abrasive wear at the gate insert. Terminal product forms include threaded body fittings, valve-block housings, solenoid mounting brackets, and pneumatic suspension manifold plates.
The compound’s PA12 backbone resists aliphatic hydrocarbons, greases, diluted alkalis, and many aqueous salt solutions, while the 50% glass reinforcement raises flexural modulus into the range 10,000–13,000 MPa under ISO 178 to reduce flange deformation under bolt preload. The material is charged at 100 wt% virgin granulate for pressure-containing parts; any regrind is excluded from sealing surfaces and limited to 15 wt% in non-pressure regions because glass-fiber orientation at the sealing lip determines leakage resistance. Compliance for industrial piping and fluid-handling components is assessed under ISO 9080:2012 long-term hydrostatic strength testing for plastic materials and validated case-by-case for chemical resistance using ISO 22088-3 environmental stress-cracking under constant load. When pressure-containing housings are machined from extruded billet, the extrusion operation is run at melt temperature 230–250 °C, followed by stress relief at 100 °C for 2 h per 10 mm cross-section. Injection molding uses melt 250–280 °C, mold 80–100 °C, and a shot volume below 70% of barrel capacity to avoid residence-time degradation. Pre-drying is at 80 °C for 6–10 h to ≤0.08%. Flange warpage due differential glass orientation between thick and thin sections is controlled by sequential valve gating. Terminal parts are metering pump heads, manifold blocks, valve seats, flow-cell housings, and flanged adapters in water-treatment and chemical-dosing skids. Continuous exposure to strong oxidizing acids, concentrated formic acid, or certain chlorinated solvents is outside recommended service.
Analytical instrument frames and laboratory automation carriage plates made from EMS-Grivory Grilamid LBV-50H FWA black 9225 use the 50% glass reinforcement to provide dry-molding flexural modulus sufficient to eliminate steel corner brackets in low-mass moving stages. The molding feed is 100 wt% virgin compound, with dry-as-supplied moisture verified at ≤0.10%; because dimensional tolerance in carriage plates is specified at ±0.05 mm across 150 mm, the part is not blended with recycled lot-to-lot regrind unless the regrind is ≤10 wt% and predried separately at 80 °C for 8 h. Compliance for non-patient-contact laboratory equipment enclosures follows IEC 61010-1:2010/AMD2:2019 for safety, with material flammability evaluated under UL 94 at final thickness. Comparative tracking index testing is referenced to IEC 60112; the glass-filled PA12 surface is not recommended for live-contact insulation above pollution degree 2 without coating. Production uses injection molding with high-precision temperature control, melt 250–270 °C, mold 80 °C, and cushion 2–4 mm to maintain shot-weight repeatability. Batch-to-batch melt-viscosity variation is managed by monitoring in-mold cavity pressure coefficient of variation below 5%. Terminal product types include LC-MS instrument frames, autosampler carriage plates, detector mounting brackets, and robot gripper housings. The carbon-black pigmentation of black 9225 provides indoor UV screening, but outdoor structural use without additional coating is not advised because gloss and surface crazing may occur after prolonged weathering.
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EMS-Grivory Grilamid LBV-50H FWA black 9225 is a heat-stabilized polyamide 12 compound reinforced with 50% by weight glass fiber and supplied in a dry condition. The dry suffix is a packaging and moisture specification rather than a polymer grade modifier: residual moisture is controlled to 0.10% or lower before melt processing, which reduces hydrolysis during plastication and stabilizes batch-to-batch melt viscosity. Density is reported at 1.47 g/cm³ under ISO 1183. Dry-as-molded tensile modulus is published in the range of 14,000 MPa to 16,000 MPa under ISO 527-1/-2, with tensile strength at break near 170 MPa and elongation at break below 5%. Because the polyamide 12 matrix contains fewer amide linkages per unit mass than polyamide 66 or polyamide 6, water absorption at saturation is typically 0.70% under ISO 62, compared with 2.0% to 2.5% for conditioned PA66-GF50. The black 9225 colorant package and FWA designation indicate the grade is positioned for selected food-contact and potable-water applications; the exact certification status must be confirmed against the final article and the manufacturer's current declaration.
Because the PA12 backbone has fewer polar amide sites, the equilibrium moisture uptake and resulting hygroscopic swelling are lower than in PA66 or PA6 at the same relative humidity. Plaques conditioned at 23°C and 50% relative humidity show a smaller dry-to-conditioned dimensional shift, which matters in water-handling or compressed-air components such as valve bodies, pump impellers, and manifolds. Nevertheless, part warpage is governed primarily by glass-fiber orientation. Published ISO 294-4 shrinkage data for this compound class indicate flow-direction shrinkage below 0.2% and transverse shrinkage above 0.5% in end-gated test plaques. Gate position, not moisture control, is therefore the first corrective step for dimensional error. Published data for this specific configuration is limited; the manufacturer's current datasheet should be used for tolerance stack and finite-element simulation.
On production-scale injection molding lines, the material should not be released by visual inspection alone. The recommended melt pool is 220°C to 240°C, with a rear-zone setpoint of 210°C and a nozzle setpoint of 240°C; degradation accelerates above 260°C, and incomplete filling of wall sections below 1.5 mm has been observed below 205°C. Back pressure is held at 2 MPa to 5 MPa and screw surface speed below 0.15 m/s to limit fiber attrition. On a 1,300 kN hydraulic machine with a 40 mm screw and 20:1 L/D ratio, increasing back pressure above 8 MPa can extend screw recovery time by approximately 20%; injection pressure at transfer is generally 80 MPa to 120 MPa. Mold temperature should be maintained at 60°C to 80°C for dimensionally stable parts, while mold temperatures below 40°C produce a high-gloss but brittle skin and reduce elongation at break. The dry-pack material should still be confirmed at the hopper with a desiccant dryer set to 80°C and a dew point below -30°C for 4 h to 8 h, targeting residual moisture below 0.10%. Capillary rheometry at 240°C for this class shows shear viscosity near 200 Pa·s to 400 Pa·s at 1,000 s^-1 and 80 Pa·s to 150 Pa·s at 10,000 s^-1; these values support gate-size calculations but do not replace mold-filling simulation. Gate dimensions for thin-wall sections should be at least 0.8 mm to 1.2 mm thick with a land length of 0.5 mm to 1.0 mm to reduce fiber breakage, and hot-runner manifolds should avoid dead zones because residence time above 10 min at 240°C can yellow the matrix and reduce tensile strength.
Heat deflection temperature under 1.8 MPa is reported near 175°C under ISO 75-2/A, and the melting point by differential scanning calorimetry is approximately 176°C under ISO 11357-3. Continuous use above 100°C requires long-term heat-ageing data because oxidation at the glass-fiber interface can reduce elongation. Published data for this specific configuration is limited at 120°C in air; the manufacturer's thermal endurance curve should be consulted before specifying the grade for hot-air or hot-oil exposure. The heat-stabilized package does not raise the melting point but retards chain scission and slows the loss of tensile elongation during thermal aging. Regrind ratios up to 20% by weight are typically accepted for non-appearance parts; higher regrind fractions reduce melt-flow consistency and can shift notched Charpy impact below the datasheet minimum. If regrind use is combined with a hot-runner system, the residence-time distribution broadens, and the combined effect on black pigment dispersion and fiber length distribution should be monitored by melt volume-flow rate and ashing residue.
Mechanical property datasheet values are derived from unidirectional tensile bars and do not transfer directly to complex geometries. In a multi-gated housing, flow-front division creates weld lines where glass fibers align perpendicular to the applied stress, and weld-line tensile strength in glass-filled polyamides can fall 40% to 60% below the molded base value. The dry-state notched Charpy impact of the compound is reported near 15 kJ/m² under ISO 179-1/1eA, but weld-line regions sometimes show significantly lower energy absorption. Gate placement, overflow wells, or local mold heating are required to move weld lines out of pressure-bearing regions. The flow-direction coefficient of linear thermal expansion is approximately 2.5 × 10^-5 K^-1, while the cross-flow value is higher; this anisotropy must be included in tolerance stack-up calculations for parts longer than 50 mm. Part design should also consider a Poisson's ratio near 0.35 and the difference between tensile modulus and flexural modulus caused by fiber skin-core distribution. For structural parts, a fiber-orientation solver calibrated with a micro-CT fiber length distribution is preferable to isotropic assumptions.
Direct replacement of zinc or aluminum die castings with Grilamid LBV-50H FWA black 9225 fails if the part is converted without stiffness analysis. The compound density of 1.47 g/cm³ provides a mass reduction of roughly 80% against zinc die-casting alloy and 46% against aluminum, but the tensile modulus of approximately 15,000 MPa is far below the 70,000 MPa to 85,000 MPa typical of those metals. Ribs, gussets, thicker wall sections, or fiber-orientation optimization are required. Polyamide vibration damping can reduce radiated noise in brackets and manifolds, but creep data under ISO 899-1 must be reviewed for sustained load. Aluminum inserts can be used when local thread strength is needed; however, the differential thermal expansion between the metal insert and the polymer can produce hoop stress after repeated thermal cycling. In pressure-retaining housings, the glass-fiber orientation at weld lines and bosses should be included in burst-test validation, and the material should not be qualified solely by tensile bar data.
Chemical resistance of the PA12 matrix is high in aliphatic hydrocarbons, diesel, oils, and many automotive coolants at 23°C to 60°C, but concentrated acids, phenols, and formic acid degrade the polyamide. The 50% glass fiber content lowers volumetric swelling but increases sensitivity to boiling water extraction for migration testing. Stress-cracking evaluations under ISO 22088-3 are recommended for components with molded-in inserts or sharp internal corners exposed to calcium chloride road-salt solutions. The black 9225 carbon-black package improves ultraviolet screening relative to natural grades, but outdoor exposure still causes surface chalking and a moderate reduction in gloss. The material should not be combined with unverified plasticizer-bearing seals because plasticizer migration can soften the polyamide surface and reduce friction coefficients. Published data for this specific configuration is limited for long-term exposure to hot diesel with high peroxide content; component-level immersion testing is required before production release.
PA66-GF50 offers higher dry-state stiffness and higher heat deflection temperature, typically near 245°C to 250°C, but takes up more water and can embrittle in hot calcium chloride. PPA-GF50 provides the highest thermal stability and HDT, often above 280°C, but is stiffer in the melt and more difficult to fill in thin sections. The PA12-GF50 product sits between these classes for flow length and moisture resistance; its lower melting point limits peak service temperature, but its lower moisture absorption preserves electrical properties and dimensional stability in humid conditions. A comparison table based on typical published datasheet values follows.
| Property | Test method | PA12-GF50 dry | PA12-GF30 dry | PA66-GF50 dry |
|---|---|---|---|---|
| Density | ISO 1183 | 1.47 g/cm³ | 1.28 g/cm³ | 1.56 g/cm³ |
| Tensile modulus | ISO 527-1/-2 | 15,000 MPa | 9,000 MPa | 16,000 MPa |
| Tensile strength at break | ISO 527-1/-2 | 170 MPa | 130 MPa | 200 MPa |
| Notched Charpy impact, 23°C | ISO 179-1/1eA | 15 kJ/m² | 10 kJ/m² | 12 kJ/m² |
| Water absorption at saturation | ISO 62 | 0.70% | 0.80% | 2.0% |
| Heat deflection temperature, 1.8 MPa | ISO 75-2/A | 175°C | 150°C | 245°C |
The FWA suffix identifies the grade as a candidate for selected food and water contact applications, but it does not replace finished-article compliance. In Europe, the final component must be evaluated under EU 10/2011 and Regulation (EC) No 1935/2004; in the United States, FDA 21 CFR 177.1500 applies to nylon resins but sets extraction constraints based on food type and use temperature. Potable-water listings such as NSF/ANSI/CAN 61, KTW-BWGL, or ACS require separate formulation, pigment, and surface-volume ratio testing. The black 9225 colorant package may influence migration or organoleptic results and must be included in the certification file. A supplier declaration for the granulate is not sufficient for a molder without testing plaques produced on the same machine and at the same residence time as the commercial part.
Electrical and dielectric data for dry-molded specimens follow the same moisture-sensitivity pattern. Comparative tracking index under IEC 60112 is commonly reported above 600 V for glass-filled polyamides, while dielectric strength for 2.0 mm specimens under IEC 60243-1 is typically in the 25 kV/mm to 35 kV/mm range. The lower amide density of PA12 relative to PA6 or PA66 tends to reduce the change in surface resistivity with humidity; however, the black 9225 colorant package can alter surface resistivity, and specific lot data should be confirmed before use in electrical insulation.
At sub-zero temperatures, the PA12 matrix retains a greater fraction of its room-temperature impact resistance than PA66 or PA6. Notched Charpy values measured at -30°C under ISO 179-1/1eA are lower than at 23°C, but the drop is smaller than for PA66-GF50 in the same class. This supports the use of the compound in cold-climate compressed-air couplings and valves where brittle failure is the primary risk. The final value is still dependent on fiber length distribution; aggressive screw recovery can counter the matrix advantage.
Residual moisture analysis should be performed on the as-delivered batch and after hopper residence. A gravimetric method such as ISO 15512 or a pressure-rise test can resolve moisture below 0.10%; moisture above that threshold hydrolyzes the polyamide during melting and reduces tensile strength by roughly 5% to 15%. The black pigmented surface can obscure splay until the part is backlit, so visual inspection alone is not a reliable release criterion. Lot-to-lot variation in glass-fiber length distribution and colorant dispersion can influence Charpy impact and surface appearance; production control should include melt volume-flow rate under ISO 1133-1 and ashing residue per ISO 3451-1, with records maintained for each lot. Because the material is semi-crystalline, the molded morphology depends on cooling rate, and fast cycling can suppress crystallinity slightly and reduce the effective service temperature.
